| How can I configure /etc/hosts file to point to a .html file on a different server? Posted: 28 Mar 2021 03:47 PM PDT Server I have a xyz.conf file on the server in the /etc/apache2/sites-enabled directory. The index.html file is in the /var/www/domain1/ directory. ** Desktop Now, I have to view that index.html webpage on this desktop server. What changes should I make in the /etc/hosts file to view it. Here is a snippet of hosts file Host addresses 192.168.10.12 server02 127.0.0.1 localhost 127.0.1.1 thakurke-dtop.localdomain thakurke-dtop ::1 localhost ip6-localhost ip6-loopback ff02::1 ip6-allnodes ff02::2 ip6-allrouters 192.168.10.13 thakurke-dtop.localdomain thakurke-dtop
192.168.10.12 is the IP address of that server  |
| Who can create /run/sshd directory on Raspberry-Pi if not ssh.service? Posted: 28 Mar 2021 03:39 PM PDT I have an image of Raspberry-Pi, on which I am trying to make sshd running ("corrupted"). On another image, it is already runnung ("good"). On both images I have: # cat ssh.service [Unit] Description=OpenBSD Secure Shell server After=network.target auditd.service ConditionPathExists=!/etc/ssh/sshd_not_to_be_run [Service] EnvironmentFile=-/etc/default/ssh ExecStartPre=/usr/sbin/sshd -t ExecStart=/usr/sbin/sshd -D $SSHD_OPTS ExecReload=/usr/sbin/sshd -t ExecReload=/bin/kill -HUP $MAINPID KillMode=process Restart=on-failure [Install] WantedBy=multi-user.target Alias=sshd.service
i.e. no RuntimeDirectory directive. Nevertheless, "good" image starts ssh, while "corrupted" one does not. #systemctl start ssh
fails. If I create directory by hands mkdir /run/sshd
the command #systemctl start ssh
is starting to work. The question is: how is it possible for ssh service to work without RuntimeDirectory directive? Who can create it for it?  |
| Kwin, xdotool, and wmctrl Posted: 28 Mar 2021 02:48 PM PDT I have been trying to do something similar to what described in this thread and create commands to arrange windows in KDE beyond the quicktile functions currently available. I love them, but they are a bit limited when dealing with ultrawide monitors. I've explored multiple approaches using xdotool and wmctrl, and they all work well, except they fail when the windows to be modified have have been quicktiled. Basically, Kwin does changes some property of these windows that make them insensitive to any of the above commands. xwininfo does not show any differences before and after quicktiling, so it must be something more subtle.
I've tried every single option I could think about, so now I'm lost. Any suggestions?  |
| Blocking domain on host, results in blocking domain on guest VM (QEMU/KVM) Posted: 28 Mar 2021 03:27 PM PDT Desired Outcome I want to block a.com on a host machine, but allow it on a guest VM. Details On a Linux Mint host machine I have dnsmasq running. The dnsmasq.conf file blocks domain a.com with address=/a.com/127.0.0.1 as desired. I have QEMU/KVM installed on this host and created a guest VM also running Linux Mint with dnsmasq. Pinging a.com on the VM results in pointing to 127.0.0.1, effectively blocking a.com on the VM which is not what I want. I'm assuming this has something to do with the network configuration on the VM, but I'm not sure.  |
| Halt/crash after waking from suspend - Pop!_OS 20.04 lts kernel 5.4, 5.8- AMD GPU (rx 5600xt) Posted: 28 Mar 2021 01:25 PM PDT I'm running into issues trying to get my system to wake from sleep. Specifically, after waking from suspend the system will accept input for a few seconds from mouse and keyboard then the screen will freeze/lockup. Caps lock is still responsive and the mouse also seams functional, but the cursor doesn't move on screen. I've done the classic sudo apt update && sudo apt upgrade. I've also tried adding amdgpu.gpu_recovery=1 to the end of my boot parameters in case it was an issue re initializing the GPU I've tried supplied 5.4 and 5.8 kernels, both from stock and building from source, in addition to trying out the 5.9 and 5.10 upstream kernels (from source) just in case. System is a HP Dual Xeon x5670 workstation with 144 GBs of ECC Ram and the following add in cards (output of LSPCI), with my gpu being an amd rx 5600xt 05:00.0 USB controller: Renesas Technology Corp. uPD720201 USB 3.0 Host Controller (rev 03) 08:00.0 Serial Attached SCSI controller: Broadcom / LSI SAS2008 PCI-Express Fusion-MPT SAS-2 [Falcon] (rev 03) 0b:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Upstream Port of PCI Express Switch (rev ca) 0c:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Downstream Port of PCI Express Switch 0d:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 [Radeon RX 5600 OEM/5600 XT / 5700/5700 XT] (rev ca) 0d:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 HDMI Audio 14:00.0 Non-Volatile memory controller: Silicon Motion, Inc. Device 2263 (rev 03)
I've also attached my kernel .config (I rebuilt the kernel from source just to try and see if that was the issue as well) https://pastebin.com/p0K7ixxJ  |
| Xorg detects no displays with an Intel UHD 630 Posted: 28 Mar 2021 01:50 PM PDT Setup I'm trying to build a new media PC, and chose a low-power Intel Core i5 10600T processor, which has an integrated UHD 630 graphics chip. The motherboard is an ASUS Prime B560M-A and the display used is a Sony Bravia KDL-55W905A. I am using Debian testing (Bullseye), XFCE and lightdm. Problem details It seems that no displays are detected by the graphics chip at all. I get graphics at boot time and in BIOS, but when the system tries to start X, the screen goes blank permanently. Nothing is displayed in the X terminal and regular terminals cannot be accessed with for ex. Ctrl-Alt-F[something]. However, as expected, the computer responds normally to SSH access and I can interact with it remotely. The Xorg log file is here: https://pastebin.com/XCpjxe3y The offending line seems to be this: [ 3.859] (WW) modeset(0): No outputs definitely connected, trying again... lspci -v gives this output which seems fine:
00:02.0 VGA compatible controller: Intel Corporation CometLake-S GT2 [UHD Graphics 630] (rev 03) (prog-if 00 [VGA controller]) DeviceName: Onboard - Video Subsystem: ASUSTeK Computer Inc. UHD Graphics 630 Flags: bus master, fast devsel, latency 0, IRQ 140, IOMMU group 1 Memory at 6000000000 (64-bit, non-prefetchable) [size=16M] Memory at 4000000000 (64-bit, prefetchable) [size=256M] I/O ports at 3000 [size=64] Expansion ROM at 000c0000 [virtual] [disabled] [size=128K] Capabilities: [40] Vendor Specific Information: Len=0c <?> Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [100] Process Address Space ID (PASID) Capabilities: [200] Address Translation Service (ATS) Capabilities: [300] Page Request Interface (PRI) Kernel driver in use: i915 Kernel modules: i915
dmesg log shows problems with the video card at 1.046225, 1.061414, 1.063566 and 1.063917: https://pastebin.com/M1DCCDZ4 What have I tried For the record, I have an older and slower media PC machine with Core i5 4590T and its integrated graphics chip. This system works perfectly fine with the same TV. - The motherboard has two HDMI outputs and one DP output. None of these work.
- Different cables have been tried, including cables which work with the same TV and the older media PC machine.
- When booting from an Ubuntu liveCD, The exact same thing happens.
- I cannot access
xrandr to check on displays, because X does not start. - Setting
i915.modeset=0 in grub config gets me to X at 1024x768 (only). In this state, xrandr runs, but does does not seem to give any sensible output and the resolution cannot be changed from X settings. - Finally, the xserver-xorg-video-intel package description states that it should not be used for systems newer than 2007. I have uninstalled the package, but this did not seem to have any effect. The Xorg log after this has been done is here: https://pastebin.com/MwqvwmWL
I'm at my wit's end. Of course I could order a low-end graphics card and add it to the system, but would prefer not to. Any help is appreciated. Additional questions As said, if I set i915.modeset=0, I get to X, but the graphics are severely limited. I am also unsure about what the option truly does internally. Can I work with this state in some way to force a better resolution? Does HW acceleration work in this state?  |
| How can I kill a process that kills the computer if it hangs? Posted: 28 Mar 2021 02:44 PM PDT I would like to write a script that detects when my Ubuntu machine hangs for more than 10 seconds, for example, and kills the offending process so I don't have to force-power-off my device. The problem seems to be that my RAM overfills sometimes (I have 8 GB, but I'm working with RAM disks and more then one virtual/guest OS, sometimes I play a game with over 1000 entities). The RAM can't swap fast enough because my HDD is slow, but I don't want to repair that because I'll get more RAM soon. I just want to have a script that kills a very resource-intensive process if my computer hangs. How can I go about that? Uh, EDIT: I sometimes can hear sound, mouse works in very most cases if hangs... But keyboard like crashed and I can't go to login-shell with alt+ctrl+cmd/windows/super F4/F5/F6 and it doesn't looks that it fixes byself (kernel is still alive, HDD makes sometimes noices, but I leaved it already more then an hour: no fix, HDD noices not hearable, maybe every minute one  |
| Pyhton script executed in rc.local does not log, unless with a non-zero code Posted: 28 Mar 2021 02:16 PM PDT My rc.local service executes a python script on startup: it works fine but it doesn't log anywhere, unless an error occurres and exits with a non-zero code. This script runs scheduled operations, therefore it will run pending in background, unless an error occurres or it's stopped manually. This is how my rc.local looks like: #!/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit 0" on success or any other # value on error. # # In order to enable or disable this script just change the execution # bits. # # By default this script does nothing. cd /root/path/to/script /root/path/to/script/venv/bin/python /root/path/to/script/main.py & exit 0
I checked syslog file with cat /var/log/syslog | grep rc.local but it only logs when thread starts or stops (the same information of systemctl status rc-local.service): Mar 28 12:49:07 machine-hostname systemd[1]: Starting /etc/rc.local Compatibility... Mar 28 12:49:07 machine-hostname systemd[1]: Started /etc/rc.local Compatibility.
I tried to redirect the output to an external file by overriding stdout in python script, but it doesn't work. I use a virtual environment to avoid the installation of various required python dependencies (like requests or schedule), could it be the cause of the problem? I'm new to python and linux worlds, so maybe I'm doing some configuration mistakes PS: I need to move in the script execution folder because the python script runs openvpn command internally, and it needs its configuration files that are in the script execution folder. Here's an example of systemctl status rc-local.service command output: ● rc-local.service - /etc/rc.local Compatibility Loaded: loaded (/lib/systemd/system/rc-local.service; enabled-runtime; vendor preset: enabled) Drop-In: /lib/systemd/system/rc-local.service.d └─debian.conf Active: active (running) since Sun 2021-03-28 12:49:07 CEST; 1h 32min ago Docs: man:systemd-rc-local-generator(8) Process: 10033 ExecStart=/etc/rc.local start (code=exited, status=0/SUCCESS) Tasks: 2 (limit: 4915) CGroup: /system.slice/rc-local.service ├─10038 /root/path/to/script/venv/bin/python /root/path/to/script/main.py └─10068 openvpn configuration-file.ovpn mar 28 12:49:07 machine-hostname systemd[1]: Starting /etc/rc.local Compatibility... mar 28 12:49:07 machine-hostname systemd[1]: Started /etc/rc.local Compatibility.
Here's a script snippet: import requests import os import subprocess import shutil import fileinput import schedule import time from urllib.request import urlopen # global variables declaration ... # functions declaration ... if __name__ == '__main__': print('Starting VPN connection...') server_list = get_server_list(max_servers_limit) # calls a public api connect(server_list) # executes openvpn command print('Scheduling VPN connection change every {} hours'.format(change_vpn_every_hours)) schedule.every(change_vpn_every_hours).hours.do(change_vpn_connection) print('Scheduling internet connection checking every {} minutes'.format(check_internet_connection_minutes)) schedule.every(check_internet_connection_minutes).minutes.do(check_internet_connection) while True: schedule.run_pending() time.sleep(1)
 |
| How to change .profle and have the setting effective without sourcing .profile every time or needing to reboot? Posted: 28 Mar 2021 02:43 PM PDT |
| Is it safe to run tune2fs -l /dev/device on a mounted filesystem? Posted: 28 Mar 2021 01:40 PM PDT Is it safe to run tune2fs -l /dev/device on a mounted filesystem? That is, listing the current values (I'm trying to do this to see if the filesystem is marked as clean). If it's ok, is there a definitive source where this is documented so that I can rest assured I won't corrupt something? Thanks  |
| Custom Kernel module not being loaded Posted: 28 Mar 2021 03:04 PM PDT I've modified a kernel module (qcaspi) and recompiled it, however my modifications aren't being called (checked dmesg) when the OS boots up. Instead, the old kernel module is being run. If I reload the module with rmmod and modprobe then my changes DO get called. What's going on there? Where is the OS finding the old module if I modified it and now have a new .ko file?  |
| Any possible conflict between using both --force-confold and --force-confnew with dpkg? Posted: 28 Mar 2021 01:54 PM PDT Essentially, I'm using this answer to have a non-interactive experience with application such as dpkg, apt and other ones that may depend on the former. problem though is, is there any conflict between those two flags, when used together? I'm asking because, as i understand it: apt-get -o Dpkg::Options::="--force-confdef"
Use the default setting (depending on package, i believe some either replace old config, and some leave the old one, unless I'm mistaken) and apt-get -o Dpkg::Options::="--force-confnew"
Keep the new config instead... So I'm a bit confused as to why certain sources mention two of these flags, even though they may or may not conflict with each other (tried them but don't know any packages that would launch debconf unless i run dist-upgrade and wait for the right package to do that). Do i just need a single one of those instead or both?  |
| why are the definition of true and false in stdbool.h the exact opposite from the UNIX programs true and false? Posted: 28 Mar 2021 01:14 PM PDT stdbool.h is usually defined as: #define false 0 #define true 1
(Sources: OpenBSD, musl, etc.) whereas the unix program false - which just has a unsuccessful status code, is defined as: int main(int argc, char *argv[]) { return (1); }
for completeness, the definition of the unix program true is: int main(int argc, char *argv[]) { return (0); }
So clearly, it is the complete opposite of the value of false in stdbool.h. I have used the version from OpenBSD as the version from coreutils is more verbose What is the historical reason to make these different?  |
| How to config systemd to force ALL local drive mounts (no network devices) before GDM/GUI? Posted: 28 Mar 2021 01:46 PM PDT I am trying to identify the unit precedence/pre-requisite sequencing related to disk mounting and Graphical Display Manager for the UbuntuMATE 20.04 environment. Trying to resolve issue of non-access to non-root partition, causing system "auto-recovering" by designating "/home/user" directory as the info source for what is displayed on the user desktop, when "/home/user/Desktop" is a symbolic link pointing to a different partition, "/DB001_F2/home/user.Desktop". So far ... # systemctl get-default graphical.target #
and # systemctl list-dependencies graphical.target ...(snip)... ● │ │ ├─local-fs.target ● │ │ │ ├─-.mount ● │ │ │ ├─DB001_F2.mount ● │ │ │ ├─DB001_F3.mount ● │ │ │ ├─DB001_F4.mount ...(snip)... #
I need to know how to tweak the config file for local-fs.target (*.conf file or *.wants directory entry ???), or if I need to create a custom file, for which I have no clue as to the content required. My environment is UbuntuMATE 20.04:
Desktop: MATE 1.24.0
Distro: Ubuntu 20.04.2 LTS (Focal Fossa)
Kernel: 5.4.0-67-generic x86_64 P.S. Full pared-down systemd tree of targets is as follows: graphical.target ● ├─accounts-daemon.service ● ├─apport.service ● ├─cpufrequtils.service ● ├─e2scrub_reap.service ● ├─grub-common.service ● ├─hddtemp.service ● ├─lightdm.service ● ├─loadcpufreq.service ● ├─systemd-update-utmp-runlevel.service ● ├─udisks2.service ● └─multi-user.target ● ├─...(snip)... ● └─basic.target ● ├─...(snip)... ● └─sysinit.target ● ├─...(snip)... ● └─local-fs.target ● ├─-.mount ● ├─DB001_F2.mount <<< Need to ensure this is fully mounted and accessible ● ├─...(snip)... ● ├─systemd-fsck-root.service ● └─systemd-remount-fs.service
(added March 27) The appearance of the desktop is currently as follows: 
which is displaying the contents of the "${HOME}" directory as if it were "${HOME}/Desktop" . (added March 28) The ".xsession-errors" file is the only thing I can think of for a hint of what is happening. At the end, it says "$HOME" is malformed. Here is the relevant segment from start until error is encountered: # more .xsession-errors dbus-update-activation-environment: setting DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus dbus-update-activation-environment: setting DISPLAY=:0 dbus-update-activation-environment: setting XAUTHORITY=/home/ericthered/.Xauthority dbus-update-activation-environment: setting GTK_MODULES=appmenu-gtk-module:gail:atk-bridge:canberra-gtk-module dbus-update-activation-environment: setting QT_ACCESSIBILITY=1 dbus-update-activation-environment: setting SHELL=/bin/bash dbus-update-activation-environment: setting QT_ACCESSIBILITY=1 dbus-update-activation-environment: setting XDG_CONFIG_DIRS=/etc/xdg/xdg-mate:/etc/xdg dbus-update-activation-environment: setting XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0 dbus-update-activation-environment: setting LANGUAGE=en_CA:en dbus-update-activation-environment: setting DESKTOP_SESSION=mate dbus-update-activation-environment: setting GTK_MODULES=appmenu-gtk-module:gail:atk-bridge:canberra-gtk-module dbus-update-activation-environment: setting PWD=/home/ericthered dbus-update-activation-environment: setting XDG_SESSION_DESKTOP=mate dbus-update-activation-environment: setting LOGNAME=ericthered dbus-update-activation-environment: setting QT_QPA_PLATFORMTHEME=gtk2 dbus-update-activation-environment: setting XDG_SESSION_TYPE=x11 dbus-update-activation-environment: setting GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1 dbus-update-activation-environment: setting XAUTHORITY=/home/ericthered/.Xauthority dbus-update-activation-environment: setting XDG_GREETER_DATA_DIR=/var/lib/lightdm-data/ericthered dbus-update-activation-environment: setting GDM_LANG=en_CA dbus-update-activation-environment: setting HOME=/home/ericthered dbus-update-activation-environment: setting IM_CONFIG_PHASE=1 dbus-update-activation-environment: setting LANG=en_CA.UTF-8 dbus-update-activation-environment: setting XDG_CURRENT_DESKTOP=MATE dbus-update-activation-environment: setting XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0 dbus-update-activation-environment: setting XDG_SESSION_CLASS=user dbus-update-activation-environment: setting GTK_OVERLAY_SCROLLING=0 dbus-update-activation-environment: setting USER=ericthered dbus-update-activation-environment: setting DISPLAY=:0 dbus-update-activation-environment: setting SHLVL=1 dbus-update-activation-environment: setting UBUNTU_MENUPROXY=1 dbus-update-activation-environment: setting XDG_RUNTIME_DIR=/run/user/1000 dbus-update-activation-environment: setting COMPIZ_CONFIG_PROFILE=mate dbus-update-activation-environment: setting XDG_DATA_DIRS=/usr/share/mate:/usr/local/share:/usr/share:/var/lib/snapd/desktop dbus-update-activation-environment: setting PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin dbus-update-activation-environment: setting GDMSESSION=mate dbus-update-activation-environment: setting DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus dbus-update-activation-environment: setting _=/usr/bin/dbus-update-activation-environment mate-session[1437]: WARNING: Unable to find provider '' of required component 'dock' Window manager warning: Log level 128: unsetenv() is not thread-safe and should not be used after threads are created Window manager warning: Log level 128: Name com.canonical.AppMenu.Registrar does not exist on the session bus mate-session[1437]: WARNING: Could not launch application 'indicator-datetime.desktop': Unable to start application: Failed to execute child process " /usr/lib/x86_64-linux-gnu/indicator-datetime/indicator-datetime-service" (No such file or directory) cannot create user data directory: /home/ericthered/snap/ubuntu-mate-welcome/611: Not a directory (caja:1733): Gtk-WARNING **: 15:31:10.074: Failed to register client: GDBus.Error:org.gnome.SessionManager.AlreadyRegistered: Unable to register clien t (process:1962): indicator-sound-WARNING **: 15:31:10.146: volume-control-pulse.vala:744: Unable to connect to dbus server at 'unix:path=/run/user/1000 /pulse/dbus-socket': Could not connect: No such file or directory blueman-applet 15.31.12 WARNING PluginManager:147 __load_plugin: Not loading DhcpClient because its conflict has higher priority blueman-applet 15.31.12 WARNING PluginManager:147 __load_plugin: Not loading PPPSupport because its conflict has higher priority (mate-settings-daemon:1701): Gtk-WARNING **: 15:31:12.508: gtk_widget_size_allocate(): attempt to allocate widget with width -1 and height 28 ** (mate-screensaver:1754): WARNING **: 15:31:13.992: Screensaver already running in this session INFO:root:The HUD is disabled via org.mate.hud in gsettings. RuntimeError: object at 0x7fedf7823440 of type RenameMenu is not initialized RuntimeError: object at 0x7fedf7d31d00 of type FolderColorMenu is not initialized blueman-applet 15.31.17 WARNING DiscvManager:109 update_menuitems: warning: Adapter is None JavaScript error: resource:///modules/AddrBookCard.jsm, line 197: NS_ERROR_NOT_AVAILABLE: PreferDisplayName: undefined - not a boolean Window manager warning: Log level 16: Visible region is null Window manager warning: Log level 16: Visible region is null Window manager warning: Log level 16: Visible region is null Traceback (most recent call last): File "/usr/share/caja-python/extensions/dejadup.py", line 156, in get_file_items include_paths = self.dejadup.get_dejadup_paths('include-list') File "/usr/share/caja-python/extensions/dejadup.py", line 70, in get_dejadup_paths paths = ast.literal_eval([stdout][0]) # Convert shell dump to list File "/usr/lib/python3.8/ast.py", line 99, in literal_eval return _convert(node_or_string) File "/usr/lib/python3.8/ast.py", line 98, in _convert return _convert_signed_num(node) File "/usr/lib/python3.8/ast.py", line 75, in _convert_signed_num return _convert_num(node) File "/usr/lib/python3.8/ast.py", line 66, in _convert_num _raise_malformed_node(node) File "/usr/lib/python3.8/ast.py", line 63, in _raise_malformed_node raise ValueError(f'malformed node or string: {node!r}') ValueError: malformed node or string: b"['$HOME']\n" ...(snip)... (multiple repeats of the "Traceback" report)
I don't know how to translate that into a corrective action. Also, is there any way to specify that "multi-user.target" must be reached as a first target before attempting other targets for "graphical.target", or is there a dependency of which I am not aware of which would make that an impossible precondition?  |
| How to get a list of unused kernel modules of currently running system? (Static and loaded) Posted: 28 Mar 2021 03:31 PM PDT There are a lot of interesting kernel modules. Thanks to the linux kernel, I now know there is such a thing as a "Lego Infrared Tower". I'm trying to slim down my linux kernel beyond the point of things I obviously dont need. To do this, I need a programmatic way to find the unused kernel modules currently in my system. I know about 'lsmod'. But that's very far away from what I'm looking for. *** The reverse approach - by elimination *** What I might need to achieve this result is a way to determine which statically compiled and loaded modules currently are in use. These are the ones selected by "*" in the menuconfig and not just "M" I think i already might a way to "cross out" each of those modules in the .config file of the current kernel, because it is possible to map module names to config names using a grep command as described here: Binding lsmod module name with kernel configuration menu entry though I am not sure how consistently that will work. So what I have already is the .config file and the kernel sources and that grep command from that link above. The bottleneck is the first list of statically-used and loadedly- used kernel modules. This is perhaps a "best effort" question. It is as difficult to completely clean a kernel as it is to completely clean a bedroom. When my bedroom is clean, there is still some dust here and there. These are the same expectations I would expect for an answer to this question. With any resulting list, more manual filtering will be needed, because I dont think I am constantly using things like DNS name resolutions, though I do need those intermittently. But there has to be faster way to clean a kernel than recompiling the kernel every few hours with less and less modules each time. Or is there a more common strategy?  |
| Disable repo which is matching the value via ansible Posted: 28 Mar 2021 01:54 PM PDT This is written incorrectly. we want to disable all repos except the rhel & epel one. - name: yum-clean-metadata command: yum clean metadata args: warn: no - name: Repos disabled if not rhel.repo debug: msg={{ lookup('fileglob', '/etc/yum.repo.d/rhel.repo') }} yum: name: disablerepo: "ora,ol7_latest" - name: Ensure the yum package index is up to Date yum: update_cache: yes name: '*' state: latest
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| Screensharing on bspwm makes the mouse unresponsive on the shared monitor Posted: 28 Mar 2021 01:34 PM PDT The problem When I screenshare an entire screen using Discord or Firefox, the shared screen becomes completely unresponsive to my mouse. Stopping the screenshare doesn't fix the problem. Window-sharing works fine. - My mouse can't click anything on the shared screen, nor scroll. There are no hovering effects (for example: in Spotify, hovering over buttons should make them bigger and green, links should be underlined, that doesn't happen on the frozen screen)
- The keyboard still works. Video still works, everything still moves fine.
- Using keyboard shortcuts, I can still change desktops on the frozen screen.
- Moving a window from the 'frozen' screen to a different one (using keyboard shortcuts) makes that window clickable again. Moving it back undoes it, indicating that it is definitely the screen and not the window that stops responding to clicks.
- Clicking away
dunst notifications works. My rofi start menu opens fine and is interactive. - Screen recording works fine with SimpleScreenRecorder and OBS.
- Taking screenshots on the frozen screen works using spectacle: I can click and drag a rectangle on the frozen screen to take a cropped screenshot (if I open spectacle on another monitor of course, otherwise I wouldn't be able to click the
Take a new screenshot button) - This has been happening for many months, maybe a year.
- My bspwm settings are set so that if I hover over a window, that window becomes focused. On the frozen screen, only the last focused window becomes focused. I can't focus between two windows using the mouse, but bspwm does notice that my mouse is on that screen.
Screensharing in Chromium In Chromium, you can see a tab for screens, and a tab for applications: 
If I share a screen from the application tab (for instance eDP-1-1 = my laptop screen), it triggers the problem. If I share a screen from the 'Your entire screen' tab, it doesn't. Screensharing in Firefox & Discord They don't actually show you screens when choosing a screen to share, it shows you applications: 
The xxx-1-1 names you see are the names of the video outputs. Sharing one of those triggers the problem. People watching don't see anything. On discord it crashes. If I click on 'Entire screen', it shares all my monitors as if they were one screen. In discord, it works the same way, but the screensharing immediately crashes. The unresponsive mouse problem still triggers on the shared screen. Logs Running Firefox in a terminal and screensharing outputs the following output when I start sharing: [GFX1-]: Failed GL context creation for WebRender: 0 [GFX1-]: FEATURE_FAILTURE_WEBRENDER_INITIALIZE_UNSPECIFIED [GFX1-]: Failed to connect WebRenderBridgeChild. [GFX1-]: Compositors might be mixed (5,1)
Using xprop on a window on the frozen screen gives the following output: WM_STATE(WM_STATE): window state: Normal icon window: 0x0 WM_NAME(STRING) = "eDP-1-1" WM_CLASS(STRING) = "root", "Bspwm"
If I use xprop on a non-frozen empty desktop, I get the same message (which is expected). xprop seems to think the selected window on the frozen screen is the root bspwm class. Screensharing with Discord crashes and outputs the following line in terminal when I start sharing: [WebContents] crashed... reloading
- There is nothing in
dmesg. - There is nothing in
journalctl. - There is nothing in
/var/log/Xorg.0.log. What I've tried already - Closing ALL windows on all screens fixes the frozen screen (so does logging out/rebooting).
- Killing and restarting polybar makes polybar clickable again on the frozen screen. All other windows on the frozen screen will still be unresponsive.
- I tried screensharing with compton disabled
- I tried screensharing without Nvidia's DRM KMS
- I tried running Firefox in safe mode
- I tried disabling hardware acceleration in both Firefox and Discord
- I tried only connecting one monitor instead of 3
- I tried using i3 instead of bspwm. i3 only shows the windows and 'Entire screen', which would show all screens if more than one screen is connected. I can't pick a single screen.
- I tried using awesomewm, same result as i3.
My system zjeffer@Arch-zjeffer -------------------- OS: Arch Linux x86_64 Host: 80WK Lenovo Y520-15IKBN Kernel: 5.11.1-arch1-1 Uptime: 12 hours, 2 mins Packages: 1606 (pacman) Shell: zsh 5.8 Resolution: 1920x1080, 1920x1080, 1920x1080 WM: bspwm Theme: Nordic-Polar [GTK2/3] Icons: Papirus-Light-nordic-blue-folders [GTK2/3] Terminal: gnome-terminal CPU: Intel i7-7700HQ (8) @ 2.800GHz GPU: NVIDIA GeForce GTX 1050 Mobile GPU: Intel HD Graphics 630 Memory: 2662MiB / 7845MiB
bpswmcompton, this forknvidia 460.39-11, with Nvidia's DRM KMSxorg-server 1.20.10-3lightdm 1:1.30.0-4 Some questions I have some questions that might help me troubleshoot this issue: What software/technology do Firefox and Discord use to share screens? Do Chromium and Microsoft Teams use different software? What software/technology does bspwm use to share screens? i3 doesn't even provide the option to share a particular screen, so they must use different technologies. What else can I provide (logs, system info, ...)?  |
| Why does "get-pip.py" complain about invalid syntax? Posted: 28 Mar 2021 03:49 PM PDT I am trying to install pip3 without having sudo privileges following the answer provided here. The first step is to execute the following: wget https://bootstrap.pypa.io/get-pip.py
It seems to work without problems. However, when I execute the second step: python3 get-pip.py --user
I get the following error message: Traceback (most recent call last): File "get-pip.py", line 24226, in <module> main() File "get-pip.py", line 199, in main bootstrap(tmpdir=tmpdir) File "get-pip.py", line 82, in bootstrap from pip._internal.cli.main import main as pip_entry_point File "<frozen importlib._bootstrap>", line 969, in _find_and_load File "<frozen importlib._bootstrap>", line 954, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 896, in _find_spec File "<frozen importlib._bootstrap_external>", line 1139, in find_spec File "<frozen importlib._bootstrap_external>", line 1115, in _get_spec File "<frozen importlib._bootstrap_external>", line 1096, in _legacy_get_spec File "<frozen importlib._bootstrap>", line 444, in spec_from_loader File "<frozen importlib._bootstrap_external>", line 533, in spec_from_file_location File "/tmp/tmphdj_zdji/pip.zip/pip/_internal/cli/main.py", line 60 sys.stderr.write(f"ERROR: {exc}") ^ SyntaxError: invalid syntax
I thought that the problem was that I did not specify my user-name after --user. However, it does not help. I still get the same error. Does anyone know what I am doing wrong?
ADDED: As it was suggested in comments, the problem might be caused by the fact that get-pip.py works only for python 3.6 version or higher and I have version 3.5. To overcome the problem I have tried: curl https://bootstrap.pypa.io/3.5/get-pip.py | python3
It has been executed without errors. As output I got: Successfully installed pip-20.3.4 setuptools-50.3.2 wheel-0.36.2
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| Sign Kernel Modules Posted: 28 Mar 2021 02:59 PM PDT So i am on a debian buster 10 system and i installed virtualbox and i encountered an error which tells me to load some kernel modules manually. sudo ./vboxconfig [sudo] password for user: vboxdrv.sh: Stopping VirtualBox services. vboxdrv.sh: Starting VirtualBox services. vboxdrv.sh: You must sign these kernel modules before using VirtualBox: vboxdrv vboxnetflt vboxnetadp See the documenatation for your Linux distribution.. vboxdrv.sh: Building VirtualBox kernel modules
So i just need some help to load the vboxdrv, vboxnetflt and vboxnetadp kernel modules to complete my virtual box installation and i am not too sure how this is done. I am using a UEFI system which has secure boot enabled.  |
| Simple command-line calculator Posted: 28 Mar 2021 02:39 PM PDT Issue: Every now and then I need to do simple arithmetic in a command-line environment. E.G. given the following output: Disk /dev/sdb: 256GB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 1049kB 106MB 105MB fat32 hidden, diag 2 106MB 64.1GB 64.0GB ext4 3 64.1GB 192GB 128GB ext4 5 236GB 256GB 20.0GB linux-swap(v1)
What's a simple way to calculate on the command line the size of the unallocated space between partition 3 and 5? What I've tried already: bc bc bc 1.06.95 Copyright 1991-1994, 1997, 1998, 2000, 2004, 2006 Free Software Foundation, Inc. This is free software with ABSOLUTELY NO WARRANTY. For details type `warranty'. 236-192 44 quit
where the bold above is all the stuff I need to type to do a simple 236-192 as bc 1+1 echoes File 1+1 is unavailable. expr expr 236 - 192
where I need to type spaces before and after the operator as expr 1+1 just echoes 1+1.  |
| What is using my swap space? Posted: 28 Mar 2021 02:56 PM PDT On a Debian Linux 3.16 machine, I have 244 MB of swap space used: # free -h total used free shared buffers cached Mem: 94G 36G 57G 1.9G 3.8G 11G -/+ buffers/cache: 20G 73G Swap: 487M 244M 243M
Looking at this, I cannot find 244 MB used. # for file in /proc/*/status ; do grep VmSwap $file; done | sort -nk 2 | tail VmSwap: 0 kB VmSwap: 0 kB VmSwap: 0 kB VmSwap: 0 kB VmSwap: 0 kB VmSwap: 0 kB VmSwap: 4 kB VmSwap: 12 kB VmSwap: 16 kB VmSwap: 36 kB
And I only have 34 MB of SwapCached: # grep -i swap /proc/meminfo SwapCached: 34584 kB SwapTotal: 499708 kB SwapFree: 249388 kB
Kernel doc says about this: SwapCached: Memory that once was swapped out, is swapped back in but still also is in the swapfile (if memory is needed it doesn't need to be swapped out AGAIN because it is already in the swapfile. This saves I/O) How can I know which process is using my swap space on my Linux system? More precisely: Where are consumed each of those 244 MB of swap?  |
| KDE global menu disappeared in Plasma 5.12 Posted: 28 Mar 2021 03:59 PM PDT I upgraded to plasma 5.12 and the global menus disappeared, and the entry in settings also disappeared. Application Style ⇒ Widget Style ⇒ Fine Tuning I tried deleting the plasma* files from ~/.config and also the whole ~/.kde folder thinking it may be some misconfiguration, but none of this helped. 
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| How to choose Qt installation? Posted: 28 Mar 2021 02:56 PM PDT I've build (configure, make, make install) Qt 5.4.2 from sources on my Debian 7.8 x64. Now, I try to build Qt Creator, but my system is unable to locate this specific Qt build. Firstly, I tried to set $QTDIR and $PATH, but it didn't work. Then, I have read that it is necessary to use qtchooser. So, this is what I have so far: ber@mydeb:/usr/lib/x86_64-linux-gnu/qtchooser$ qtchooser -l 4 5 @5 @qt5 default qt4-x86_64-linux-gnu qt4 qt5-x86_64-linux-gnu qt5
Initially, there was no default conf, but I've created it using the following: ber@mydeb:/usr/lib/x86_64-linux-gnu/qtchooser$ sudo nano default.conf
with the text: QT_SELECT="5" QTTOOLDIR="/usr/local/Qt-5.4.1/bin" QTLIBDIR="/usr/local/Qt-5.4.1/"
After this, my system still used a wrong Qt installation (from the /usr/lib/x86_64-linux-gnu/folder) which does not contain a working Qt installation. Then, I tried to set QT_SELECT=default, then QT_SELECT=5 and here is what I have now: qtchooser -print-env QT_SELECT="qt5" QTTOOLDIR="QT_SELECT="5"" QTLIBDIR="QTTOOLDIR="/usr/local/Qt-5.4.1/bin""
i.e. QTTOOLDIR=variable is wrong and here is an error displayed when I try to use qmake: qmake -v qmake: could not exec 'QT_SELECT="5"/qmake': No such file or directory
What should I do to choose the correct Qt installation (the one installed to the /usr/local/Qt-5.4.1/ folder)?  |
| How do I directly expose apps running on a CentOS 7 web server? Posted: 28 Mar 2021 04:01 PM PDT How can I open a port and directly access a webapp running on tomcat on CentOS 7? Tomcat is running behind an apache httpd reverse proxy, but I want to directly access the apps running in tomcat by opening a port to directly expose each app for testing purposes. When I open up ports 8080 and 8081 in firewalld using firewall-cmd --add-port=8080/tcp and firewall-cmd --add-port=8081/tcp, I am able to access the apps running on those ports when I type server.ip.addr:8080 or server.ip.addr:8081, or anydomainontheserver.com:8080 or anydomainontheserver.com:8081. Those apps are also accessible when I access them through httpd. However, when I try to access the apps running on ports 8082, 8083, and 8084 directly, I get 404 errors in reply. This is the case even though the apps running on ports 8082 and 8083 are 100% accessible through httpd via their domain names. And the app running on port 8084 is mostly accessible via httpd via its domain name. In each case, I typed in firewall-cmd --add-port=808x and tried to access the apps via server.ip.addr:808x and anydomainontheserver.com:808x, but got 404 errors in each case. I even tried opening ports for their ajp ports in firewalld and typing server.ip.addr:80xx and anydomainontheserver.com:80xx in the browser but was given a browser error message that said the pages could not be retrieved without specifying the error number. So how can I access the apps running on ports 8082, 8083, and 8084 directly through tomcat for testing purposes? Typing firewall-cmd --list-all gives: public (default, active) interfaces: enp3s0 sources: services: dhcpv6-client http imaps openvpn smtp ssh ports: 8009/tcp 8083/tcp 8011/tcp 8084/tcp 8010/tcp 8080/tcp 8081/tcp 8013/tcp 8012/tcp 8082/tcp masquerade: yes forward-ports: icmp-blocks: rich rules:
Typing nano /etc/httpd/conf.d/virtualhosts.conf gives: <VirtualHost *:443> ServerName www.vpndomain.com ServerAlias vpndomain.com ErrorLog /var/log/httpd/vpndomain_com_error.log CustomLog /var/log/httpd/vpndomain_com_requests.log combined SSLEngine on SSLProxyEngine on SSLCertificateFile /etc/pki/tls/certs/localhost.crt SSLCertificateKeyFile /etc/pki/tls/private/localhost.key ProxyPass / ajp://server.ip.addr:8009/ ProxyPassReverse / ajp://server.ip.addr:8009/ </VirtualHost> Listen 444 <VirtualHost *:444> ServerName www.vpndomain.com ServerAlias vpndomain.com ErrorLog /var/log/httpd/vpndomain_com_error.log CustomLog /var/log/httpd/vpndomain_com_requests.log combined SSLEngine on SSLProxyEngine on SSLCertificateFile /etc/pki/tls/certs/localhost.crt SSLCertificateKeyFile /etc/pki/tls/private/localhost.key ProxyPass / ajp://server.ip.addr:8010/ ProxyPassReverse / ajp://server.ip.addr:8010/ </VirtualHost> <VirtualHost www.domain1.com:80> ServerName www.domain1.com ServerAlias domain1.com ErrorLog /var/log/httpd/domain1_com_error.log CustomLog /var/log/httpd/domain1_com_requests.log combined ProxyPass / ajp://server.ip.addr:8011/ ProxyPassReverse / ajp://server.ip.addr:8011/ </VirtualHost> <VirtualHost www.domain2.com:80> ServerName www.domain2.com ServerAlias domain2.com ErrorLog /var/log/httpd/domain2_com_error.log CustomLog /var/log/httpd/domain2_com_requests.log combined ProxyPass / ajp://server.ip.addr:8012/ ProxyPassReverse / ajp://server.ip.addr:8012/ </VirtualHost> <VirtualHost www.domain3.com:80> ServerName www.domain3.com ServerAlias domain3.com ErrorLog /var/log/httpd/domain3_com_error.log CustomLog /var/log/httpd/domain3_com_requests.log combined ProxyPass / ajp://server.ip.addr:8013 ProxyPassReverse / ajp://server.ip.addr:8013 </VirtualHost>
And typing `nano /opt/tomcat/conf/server.xml gives: <?xml version='1.0' encoding='utf-8'?> <Server port="8005" shutdown="SHUTDOWN"> <Listener className="org.apache.catalina.startup.VersionLoggerListener" /> <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" /> <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" /> <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" /> <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" /> <GlobalNamingResources> <Resource name="UserDatabase" auth="Container" type="org.apache.catalina.UserDatabase" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" pathname="conf/tomcat-users.xml" /> </GlobalNamingResources> <Service name="Catalina"> <Connector port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" /> <Engine name="Catalina" defaultHost="localhost"> <Realm className="org.apache.catalina.realm.LockOutRealm"> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> </Realm> <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true"> <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="ermapp_access_log" suffix=".txt" pattern="%h %l %u %t "%r" %s %b" /> </Host> </Engine> </Service> <Service name="Upload"> <Connector port="8081" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8444" /> <Connector port="8010" protocol="AJP/1.3" redirectPort="8444" /> <Engine name="Catalina" defaultHost="localhost"> <Realm className="org.apache.catalina.realm.LockOutRealm"> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> </Realm> <Host name="localhost" appBase="webapps_upload" unpackWARs="true" autoDeploy="true"> <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="uploadapp_access_log" suffix=".txt" pattern="%h %l %u %t "%r" %s %b" /> </Host> </Engine> </Service> <Service name="Public"> <Connector port="8082" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8445" /> <Connector port="8011" protocol="AJP/1.3" redirectPort="8445" /> <Engine name="Catalina" defaultHost="localhost"> <Realm className="org.apache.catalina.realm.LockOutRealm"> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> </Realm> <Host name="domain1.com" appBase="webapps_public" unpackWARs="true" autoDeploy="true"> <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="domain1_access_log" suffix=".txt" pattern="%h %l %u %t "%r" %s %b" /> </Host> </Engine> </Service> <Service name="domain2"> <Connector port="8083" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8446" /> <Connector port="8012" protocol="AJP/1.3" redirectPort="8446" /> <Engine name="Catalina" defaultHost="localhost"> <Realm className="org.apache.catalina.realm.LockOutRealm"> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> </Realm> <Host name="domain2.com" appBase="webapps_domain2" unpackWARs="true" autoDeploy="true"> <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="domain2_access_log" suffix=".txt" pattern="%h %l %u %t "%r" %s %b" /> </Host> </Engine> </Service> <Service name="domain3"> <Connector port="8084" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8447" /> <Connector port="8013" protocol="AJP/1.3" redirectPort="8447" /> <Engine name="Catalina" defaultHost="localhost"> <Realm className="org.apache.catalina.realm.LockOutRealm"> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> </Realm> <Host name="domain3.com" appBase="webapps_domain3" unpackWARs="true" autoDeploy="true"> <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="domain3_access_log" suffix=".txt" pattern="%h %l %u %t "%r" %s %b" /> </Host> </Engine> </Service> </Server>
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| dzen2 how to detect actual resolution and number of monitors Posted: 28 Mar 2021 03:57 PM PDT I use dzen2 with xmonad like this on my laptop: h <- spawnPipe "dzen2 -fn fixed -x 0 -y 800 -h 21 -w 1280 -ta l -fg '#ffffff' -bg '#663300' -e ''"
However there are some problems with it. - If I use an external monitor alone with an other resolution it doesn't stay on the bottom of the screen (I guess since I set
-y 800). However it should detect this automatically and position on the bottom of the screen. - Same with width (for example when using a beamer). However it should set automatically the maximum width.
- If I use multiple monitors it is only on one monitor, but it would be great to have copies of it on each monitor.
How can I fix those issues?  |
| Why Linux inside KVM gets busy after I put the host to suspend-to-ram? Posted: 28 Mar 2021 03:00 PM PDT I run another Linux instance inside KVM on my laptop. When I suspend-to-ram the laptop and wake it up again, the guest Linux starts consuming 100% CPU for some time (maybe proportional to the sleep time) and becomes completely irresponsive. After it finally unstucks itself, I see BUG: soft lockup - CPU#0 stuck for 22s. Why does it happen? How do I prevent this? Note: The question is not about pausing (suspeding) the VM or guest system. It is about the disruption caused by host's suspend-to-ram.  |
| xorg.conf XkbOption ignored for terminate:ctrl_alt_bksp to restart X Posted: 28 Mar 2021 02:01 PM PDT I want Ctrl+Alt+Bksp to restart X, so I created an xorg.conf rule: /usr/share/X11/xorg.conf.d/53-zap.conf:
Section "ServerFlags" Option "DontZap" "false" EndSection Section "InputClass" Identifier "Keyboard Defaults" MatchIsKeyboard "yes" Option "XkbOptions" "terminate:ctrl_alt_bksp" EndSection
And checking /var/log/Xorg.0.log: [ 1023.598] (II) XINPUT: Adding extended input device "Asus WMI hotkeys" (type: KEYBOARD, id 11) [ 1023.598] (**) Option "xkb_rules" "evdev" [ 1023.598] (**) Option "xkb_model" "pc105" [ 1023.598] (**) Option "xkb_layout" "us" [ 1023.598] (**) Option "xkb_options" "terminate:ctrl_alt_bksp" [ 1023.598] (II) config/udev: Adding input device AT Translated Set 2 keyboard (/dev/input/event3) [ 1023.598] (**) AT Translated Set 2 keyboard: Applying InputClass "evdev keyboard catchall" [ 1023.598] (**) AT Translated Set 2 keyboard: Applying InputClass "Keyboard Defaults" [ 1023.598] (II) Using input driver 'evdev' for 'AT Translated Set 2 keyboard' [ 1023.598] (**) AT Translated Set 2 keyboard: always reports core events [ 1023.598] (**) evdev: AT Translated Set 2 keyboard: Device: "/dev/input/event3" [ 1023.598] (--) evdev: AT Translated Set 2 keyboard: Vendor 0x1 Product 0x1 [ 1023.598] (--) evdev: AT Translated Set 2 keyboard: Found keys [ 1023.598] (II) evdev: AT Translated Set 2 keyboard: Configuring as keyboard [ 1023.598] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio0/input/input3/event3" [ 1023.598] (II) XINPUT: Adding extended input device "AT Translated Set 2 keyboard" (type: KEYBOARD, id 12) [ 1023.598] (**) Option "xkb_rules" "evdev" [ 1023.598] (**) Option "xkb_model" "pc105" [ 1023.598] (**) Option "xkb_layout" "us" [ 1023.598] (**) Option "xkb_options" "terminate:ctrl_alt_bksp"
The last line shows that it sees the directive. And yet, when I open a terminal and type setxkbmap -print -verbose 10 Setting verbose level to 10 locale is C Trying to load rules file ./rules/evdev... Trying to load rules file /usr/share/X11/xkb/rules/evdev... Success. Applied rules from evdev: rules: evdev model: pc105 layout: us Trying to build keymap using the following components: keycodes: evdev+aliases(qwerty) types: complete compat: complete symbols: pc+us+inet(evdev) geometry: pc(pc105) xkb_keymap { xkb_keycodes { include "evdev+aliases(qwerty)" }; xkb_types { include "complete" }; xkb_compat { include "complete" }; xkb_symbols { include "pc+us+inet(evdev)" }; xkb_geometry { include "pc(pc105)" }; };
I can force the option, setxkbmap -option terminate:ctrl_alt_bksp, giving me: ... model: pc105 layout: us options: terminate:ctrl_alt_bksp Trying to build keymap using the following components: ...
And I test it and it restarts X correctly. I don't understand. I had this working last week, but now it doesn't load the XkbOption from the xorg.conf file. Is there another layer that sets XKB settings that I don't know about? I'm using Ubuntu 13.10, but with xmonad. I load some gnome utilities (gnome-panel, gnome-screensaver, gnome-keyring-demon), but not gnome-settings-daemon.  |
| How can I prevent Windows from overwriting GRUB when using a dual-boot machine Posted: 28 Mar 2021 02:24 PM PDT I've been reading a lot about dual-booting, and it seems as easy as loading Windows and then loading Linux with GRUB, but everybody says that Windows loves to trash GRUB when it gets the opportunity. What are some steps I can take to prevent this from happening (other than using Windows' bootloader, I want to keep this as simple as possible)?  |
| Debian dhcpd "No subnet declaration for eth0" Posted: 28 Mar 2021 03:01 PM PDT
I am trying to set up a pxe boot server on a Debian 6.0.3 Squeeze machine that gives images of PLoP Linux. I was following a this tutorial.
When I try to start dhcpd (from package dhcp3-server), I get the following:
No subnet declaration for eth0 (10.0.0.0). **Ignoring requests on eth0. If this is not what you want, please write a subnet delclaration in your dhcpd.conf file for the network segment to which interface eth0 is attached. ** Not configured to listen on any interfaces!
My /etc/dhcpd.conf is identical to that in the tutorial save for a few changes: host testpc { hardware ethernet 00:0C:6E:A6:1A:E6; fixed-address 10.0.0.250; }
is instead host tablet { hardware ethernet 00:02:3F:FB:E2:6F; fixed-address 10.0.0.249; }
My /etc/network/interfaces is: # The loopback network interface auto lo iface lo inet loopback # The primary network interface allow-hotplug eth0 iface eth0 inet static address 10.0.0.0 netmask 255.255.255.0
And this is my /etc/default/isc-dhcp-server: # Defaults for dhcp initscript # sourced by /etc/init.d/dhcp # installed at /etc/default/isc-dhcp-server by the maintainer scripts # # This is a POSIX shell fragment # # On what interfaces should the DHCP server (dhcpd) serve DHCP requests? # Separate multiple interfaces with spaces, e.g. "eth0 eth1". INTERFACES="eth0"
which I copied to /etc/default/dhcp3-server as well, unsure which it would check.
I also tried setting the ip in /etc/network/interfaces as 10.0.0.1 and 10.0.0.2, but it produced the same result.  |
| Script to monitor folder for new files? Posted: 28 Mar 2021 02:57 PM PDT How can I immediately detect when new files added to a folder within a bash script? I would like the script to process files as soon as they are created in the folder. Are there any methods aside from scheduling a cron job that checks for new files each minute or so?  |
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