Keyboard layout switch freezes

[3DRaven]

Hi! I have problem with slow keyboard layout switching between Russian and English layouts. In ubuntu 16.04-20.04 :)

gsettings get org.gnome.desktop.wm.keybindings switch-input-source
['XF86Keyboard']
But in gnome-tweak-tool I set as key for layout switching caps-lock. It is work, but when I switch from en to ru, fast, and when ru to en, I have delay ~1s.

And in gnome-tweak-tool I see caps-lock as keyboard key for switching, and in gsettings is XF86Keyboard or some time ago super+space. When I try to set in gsettings some other keys (as super+space), they worked fast, but in gnome-tweak-tool caps-lock work slooow. And all this keys work in one time, this is strange.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
Uname: Linux 5.12.0-8.5-liquorix-amd64 x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.capabilities.gpu0: Error: path was not a regular file.
.proc.driver.nvidia.capabilities.mig: Error: path was not a regular file.
.proc.driver.nvidia.gpus.0000.01.00.0: Error: path was not a regular file.
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.suspend: suspend hibernate resume
.proc.driver.nvidia.suspend_depth: default modeset uvm
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 460.80 Fri May 7 06:55:54 UTC 2021
 GCC version: gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
BootLog: Error: [Errno 13] Отказано в доступе: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted
Date: Sun Jun 6 15:58:43 2021
DistUpgraded: 2020-12-05 22:39:51,673 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (g-exec-error-quark: Не удалось выполнить процесс-потомок «./xorg_fix_proprietary.py» (Нет такого файла или каталога) (8))
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus:
 nvidia, 460.80, 5.11.0-18.1-liquorix-amd64, x86_64: installed
 nvidia, 460.80, 5.12.0-8.5-liquorix-amd64, x86_64: installed
 nvidia, 460.80, 5.12.0-9.2-liquorix-amd64, x86_64: installed
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: CLEVO/KAPOK Computer 3rd Gen Core processor Graphics Controller [1558:2701]
 NVIDIA Corporation GK107M [GeForce GT 640M] [10de:0fd2] (rev a1) (prog-if 00 [VGA controller])
InstallationDate: Installed on 2018-06-28 (1073 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
MachineType: CLEVO CO. W250ENQ / W270ENQ
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: audit=0 intel_pstate=disable BOOT_IMAGE=/boot/vmlinuz-5.12.0-8.5-liquorix-amd64 root=UUID=3f1a1990-8bad-49d1-970e-87308d8cd521 ro quiet splash nouveau.runpm=0 zswap.enabled=0 vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: Upgraded to focal on 2020-12-05 (182 days ago)
dmi.bios.date: 04/03/2012
dmi.bios.release: 4.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W250ENQ / W270ENQ
dmi.board.vendor: CLEVO CO.
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/03/2012:br4.6:svnCLEVOCO.:pnW250ENQ/W270ENQ:pvrNotApplicable:rvnCLEVOCO.:rnW250ENQ/W270ENQ:rvrNotApplicable:cvnNoEnclosure:ct9:cvrN/A:
dmi.product.family: Not Applicable
dmi.product.name: W250ENQ / W270ENQ
dmi.product.sku: Not Applicable
dmi.product.version: Not Applicable
dmi.sys.vendor: CLEVO CO.
modified.conffile..etc.default.apport:
 # set this to 0 to disable apport, or to 1 to enable it
 # you can temporarily override this with
 # sudo service apport start force_start=1
 enabled=0
mtime.conffile..etc.default.apport: 2020-06-08T10:33:29.519300
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.102-1ubuntu1~20.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 20.2.6-0ubuntu0.20.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 20.2.6-0ubuntu0.20.04.1
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.9-2ubuntu1.2~20.04.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

[Daniel van Vugt (vanvugt)]

I'm guessing this is related to bug 1777708, even if you only have one keyboard. It sounds related.