https://bugs.kde.org/show_bug.cgi?id=515709
Bug ID: 515709
Summary: Monitor is not detected after rebinding GPU to amdgpu
Classification: Plasma
Product: plasmashell
Version First 6.5.5
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
I recently updated my system and noticed that my discrete GPU is no longer
detected when rebinding it to the amdgpu display driver. Plasma correctly
notifies that the display has been disconnected when dynamically binding it to
the VFIO driver however no display is reconnected when returning it to the
amdgpu driver.
My primary GPU is an RX 6600 XT and my passthrough GPU is a RX 6950 XT.
STEPS TO REPRODUCE
1. Bind the GPU to VFIO and notice that the display is successfully
disconnected. Make sure the display is turned off in display settings otherwise
you will get a kernel panic.
2. Rebind the GPU to amdgpu and notice that no display is reconnected.
OBSERVED RESULT
No display is reconnected upon rebinding the GPU to amdgpu.
EXPECTED RESULT
The display is reconnected upon rebinding the GPU to amdgpu.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.18.5-arch-1-1
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.2
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