Is it correct to assign this to gnome-shell? Which process is using all
the CPU?
If it is gnome-shell then please start by deleting any local extensions:
cd ~/.local/share/gnome-shell/
rm -rf extensions
and log in again.
** Summary changed:
- Entire system becomes laggy for unknown reason
+ [Lenovo ThinkPad E14 Gen 2] Entire system becomes laggy for unknown reason
** Changed in: gnome-shell (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/2047696
Title:
[Lenovo ThinkPad E14 Gen 2] Entire system becomes laggy for unknown
reason
Status in gnome-shell package in Ubuntu:
Incomplete
Bug description:
Similar to whats described in
https://bugs.launchpad.net/ubuntu/+bug/2032847 the system became super
laggy since yesterday. It seems like something fundamental is
affected. It can happen for typing, switching between tabs in browser
(chrome or firefox), VS code (switching tabs, code highlighting),
opening and closing applications, opening a new tmux session.
Everything takes super long.
Starting chromium or vs code will result in 100% cpu usage on all 8
cores according to htop for many seconds until it settles to stay
around 30 to 50% all the time. Even opening a new browser tab causes
comparable CPU load. But the described behaviour also happens without
running chromium or vs code. Restarting gnome shell or gdm3 doesn't
help. Switching back to Wayland doesn't help, there I even get mouse
freezing.
In summary, it seems like something multiplies the CPU usage of a lot
of different processes. I've never seen anything like that.
Yesterday I thought it could be the SSD breaking, because even booting
(only after restart) took very long. But fsck before booting didn't
show any problems. A full shutdown made it go away yesterday, and it
seemed it would only appear again when I get notifications from Slack
running in chromium, so I disabled it and was able to finish the work
day.
Today it started out well, I switched Slack to Firefox. But then it
appeared again and now a shutdown doesn't fix it anymore. I know, it
sounds funny, but I'm out of ideas even to narrow the source of the
problem down and I really need this machine to work for work.
Since yesterday I updated a system package called gjs (manually, since
it was held back in sudo apt upgrade), which seems to be related to
gnome-shell, it appears with quite high CPU usage in htop.
I attached the output of journalctl -b0 and memfree -h, as this was
asked in the thread mentioned above.
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: gnome-shell 42.9-0ubuntu2
ProcVersionSignature: Ubuntu 6.2.0-39.40~22.04.1-generic 6.2.16
Uname: Linux 6.2.0-39-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Fri Dec 29 13:21:03 2023
DisplayManager: gdm3
InstallationDate: Installed on 2022-03-28 (640 days ago)
InstallationMedia: Ubuntu 20.04.4 LTS "Focal Fossa" - Release amd64 (20220223)
ProcEnviron:
TERM=screen-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
RelatedPackageVersions: mutter-common 42.9-0ubuntu5
SourcePackage: gnome-shell
UpgradeStatus: Upgraded to jammy on 2022-09-06 (478 days ago)
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