https://bugs.kde.org/show_bug.cgi?id=463665
Bug ID: 463665
Summary: Everything on the screen is frozen.
Classification: Plasma
Product: kwin
Version: 5.26.3
Platform: Manjaro
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: timoha9...@mail.ru
Target Milestone: ---
SUMMARY
Everything on the screen is frozen.
STEPS TO REPRODUCE
This happened while working in the Firefox browser (nothing special, a plain
text Wikipedia webpage was opened).
OBSERVED RESULT
The image froze: all widgets did not respond to actions with them, window
switching did not work, windows did not minimize, did not move, the contents of
the windows also did not respond to actions, etc. Only the mouse cursor moved.
EXPECTED RESULT
-
SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux
KDE Plasma Version: 5.26.3
KDE Frameworks Version: 5.99.0
Qt Version: 5.15.7
Kernel Version: 5.10.154-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Pentium® Silver N5000 CPU @ 1.10GHz
Memory: 7.6 ГиБ of RAM
Graphics Processor: Mesa Intel® UHD Graphics 605
ADDITIONAL INFORMATION
Sorry for such a big text. I couldn't describe it briefly.
For several years I have been seeing this problem on different operating
systems with KDE (Kubuntu, Manjaro KDE, KDE Neon) and on different computers
with different hardware:
after using the computer for a long time without rebooting (for several weeks),
the PC starts to slow down a lot: all desktop effect animations turn into a
"slideshow", the reaction to user actions becomes very long. At the same time,
the "Xorg" process consumes 10-20% of the CPU, even if all user applications
are closed. Restarting the "plasmashell" process only slightly improved the
situation, but not for long.
The last time it ended up being that while working in the Firefox browser
(nothing special, a Wikipedia text web page was opened), the image froze: all
widgets did not respond to actions with them, window switching did not work,
windows did not minimize, did not move , the contents of the windows also did
not respond to actions, etc. Only the mouse cursor moved. The system did not
react to the call of the "konsole" terminal (ctrl+alt+t), more precisely, the
new window did not appear on the screen.
Logging in to tty2, in another session as a different user (the graphical
interface did not automatically start, I started it with the "Startx" command),
I looked at the list of processes, CPU and memory load, in order to exclude a
memory leak in the "plasmashell", as it happened before. But there were no
problems with this.
In the process list, I saw several dozen "konsole" processes running in the
problematic session. I killed them, went back to tty1 with the problematic
session, called "konsole" (ctrl+alt+t) again a few dozen times, returned to the
session in tty2 and saw in the list of processes these new "konsole" processes
(running as user in problematic session) - it means that the "broken" session
worked, only the image froze.
In tty2, I tried to kill the "plasmashell" process of the broken session, so
that I can start it again later. Went back to the broken tty1 session - didn't
help. Further, in tty2, just in case, I killed unnecessary applications, such
as Skype - it did not help.
I further thought that if "konsole" opens but is not displayed on the screen,
then the problem might be with the "kwin_x11" window manager. I killed the
process "kwin_x11" of session tty1 via session in tty2. When I switched back to
the tty1 session, I found that everything worked. Then I called "konsole"
again, ran "plasmashel" and everything worked perfectly, as if I rebooted the
computer.
Before killing "kwin_x11", I checked the CPU and memory consumption of this
process: there was no excessive memory and CPU consumption by the "kwin_x11"
process - about 20 MB.
I think the appearance of these problems lies in the "kwin_x11" process.
And one more thing (maybe important): at the time of the crash, RAM consumption
was close to the maximum - ~6.5GB out of 7.6GB and swap ~6GB out of 8GB. This
is not a memory leak. Just a large number of running applications and data
(mostly many tabs in browsers). And I have such a high memory consumption all
the time. (In my computer, you cannot increase the amount of RAM). Maybe using
swap somehow affects the problem? Although after restarting "kwin_x11" I did
not close applications and did not release RAM and swap and everything worked
perfectly. I haven't even restarted my computer since.
Specifically, this problem with a complete freeze of the desktop could not be
reproduced.
--
You are receiving this mail because:
You are watching all bug changes.
