https://bugs.kde.org/show_bug.cgi?id=511988
Bug ID: 511988
Summary: Random GUI full freeze when using a KVM switch
Classification: Plasma
Product: kwin
Version First 6.5.1
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 186721
--> https://bugs.kde.org/attachment.cgi?id=186721&action=edit
kwin wayland logs
SUMMARY
Using Kubuntu 25.10 with Plasma 6.5, i am facing random GUI full freeze when
using a KVM switch.
When the GUI is frozen, i have no access to keyboard or mouse, the only
solution is to reboot the machine with the power button.
There is no core dump generated.
STEPS TO REPRODUCE
1. Run Kubuntu 25.10 and switch from one computer to another
2. Freeze is random, it works fine during hours or days but can also freeze
several times per day
OBSERVED RESULT
System cannot be used and requires a hard reboot.
EXPECTED RESULT
System should handle the screen switch without any freeze.
kinfo
Operating System: Kubuntu 25.10
KDE Plasma Version: 6.5.2
KDE Frameworks Version: 6.19.0
Qt Version: 6.9.2
Kernel Version: 6.17.0-6-generic (64-bit)
Graphics Platform: Wayland
Processors: 12 × Intel® Core™ i7-8700 CPU @ 3.20GHz
Memory: 16 Gio of RAM (15.5 Gio usable)
Graphics Processor: Intel® UHD Graphics 630
kscreen-doctor -o
output: 1 HDMI-A-1 0febc606-85cf-44d2-813d-f4a121aa05f7
enabled
connected
priority 1
HDMI
replication source:0
Modes: 1:[email protected]*! 2:[email protected] 3:[email protected]
4:[email protected] 5:[email protected] 6:[email protected] 7:[email protected]
8:[email protected] 9:[email protected] 10:[email protected] 11:[email protected]
12:[email protected] 13:[email protected] 14:[email protected] 15:[email protected]
16:[email protected] 17:[email protected] 18:[email protected] 19:[email protected]
20:[email protected] 21:[email protected] 22:[email protected] 23:[email protected]
24:[email protected] 25:[email protected] 26:[email protected] 27:[email protected]
28:[email protected] 29:[email protected] 30:[email protected] 31:[email protected]
32:[email protected] 33:[email protected] 34:[email protected]
Geometry: 0,0 1680x1050
Scale: 1
Rotation: 1
Overscan: 0
Vrr: incapable
RgbRange: Automatic
HDR: incapable
Wide Color Gamut: incapable
ICC profile: none
Color profile source: sRGB
Color power preference: prefer efficiency and performance
Brightness control: supported, set to 75% and dimming to 100%
DDC/CI: allowed
Color resolution: automatic (10), range: [8; 12] bits per color
Allow EDR: unsupported
Sharpness control: unsupported
SOFTWARE/OS VERSIONS
Windows:
macOS:
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma:
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
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