https://bugs.kde.org/show_bug.cgi?id=478231
Bug ID: 478231
Summary: On system with nvidia dGPU, external monitor turns
black with only cursor shown after suspend to ram
Classification: Plasma
Product: kwin
Version: git master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: fanzhuyi...@gmail.com
Target Milestone: ---
SUMMARY
***
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STEPS TO REPRODUCE
1. connect external monitor
2. suspend to ram
3. wake again
OBSERVED RESULT
1. external monitor is blank with only cursor shown. The cursor can be moved
EXPECTED RESULT
External monitor works.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.90.0
KDE Frameworks Version: 5.246.0
Qt Version: 6.6.1
Kernel Version: 6.6.4-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 20 × 13th Gen Intel® Core™ i9-13900H
Memory: 15.2 GiB of RAM
Graphics Processor: Mesa Intel® Graphics
Manufacturer: ASUSTeK COMPUTER INC.
Product Name: ROG Zephyrus G16 GU603VV_GU603VV
System Version: 1.0
ADDITIONAL INFORMATION
System is intel iGPU+nvidia dGPU
This happens both with and without configuring nvidia
PreserveVideoMemoryAllocation.
Without PreserveVideoMemoryAllocation disabled, this only seems to happen if I
wait a long time after suspend.
When this happens, and I suspend the computer again, the external display
typically starts working again after the next wake.
This only happens with one external display I use, and not the other one.
Possible duplicate of 477738.
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