[kde] [Bug 466529] New: System freezes allowing only mouse to move.

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=466529

            Bug ID: 466529
           Summary: System freezes allowing only mouse to move.
    Classification: I don't know
           Product: kde
           Version: unspecified
          Platform: Kubuntu
                OS: Linux
            Status: REPORTED
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: iamavinashthakur.at at gmail.com
  Target Milestone: ---

SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug
symbols.
See
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***

Sometimes, the system crashes and everything freezes but only mouse can be
moved. What I observed in this freeze is

* It doesn't accept any keyboard/mouse input, neither does moving mouse over
something show any interaction.

* KDE Connect keyboard/mouse input is accepted. I have my phone connected via
KDE Connect, and during such freezes, although the mouse/keyboard aren't
working, the Remote Input using KDE Connect works.

* When system freezes, I can press Ctrl+Alt+F3 to go to tty3, but once I come
back to the graphical session (Ctrl+Alt+F1/F2), I can't go back to any other
tty by pressing Ctrl+Alt+F<n> on keyboard. However, Pressing this combination
using KDE Connect's Remote Input works (using HackerKeyboard on android mobile,
I'm able to make remote input of Ctrl+Alt+F3)

* `kquitapp5 plasmashell` doesn't work. If I `killall plasmashell`, then
starting it again with `DISPLAY=:0 kstart5 plasmashell` doesn't work.

* This issue had been present on 22.04 also. I switched to 22.10 hoping it
might be resolved, but it wasn't.

STEPS TO REPRODUCE
1.  -- not known --

OBSERVED RESULT
System freezes completely, with strange behaviour as mentioned above

EXPECTED RESULT
System 

SOFTWARE/OS VERSIONS
Windows: NA
macOS: NA
Linux/KDE Plasma: 5.19.0-31-generic (64 bit)
(available in About System)
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.6
Graphics Platform: X11

ADDITIONAL INFORMATION
*crash.apport* is attached, generated using `ubuntu-bug -f --save
~/crash.apport` and choosing `Display` as symptom

crash.apport :
https://drive.google.com/file/d/1T3UEgXwl2sqn1R-YoO2DxelAGNEqwGwy/view?usp=sharing

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