https://bugs.kde.org/show_bug.cgi?id=431074
Bug ID: 431074
Summary: Crash when attempting to enable external monitors with
PRIME Render offload.
Product: systemsettings
Version: 5.20.4
Platform: unspecified
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: jeanniesteven...@protonmail.com
Target Milestone: ---
Created attachment 134480
--> https://bugs.kde.org/attachment.cgi?id=134480&action=edit
Backtrace of the crash with debugging symbols
SUMMARY
systemsettings5 crashes when attempting to enable external monitors with PRIME
Render offload.
STEPS TO REPRODUCE
1. Get an NVIDIA optimus laptop with the internal display connected to the
Intel card and external outputs connected to the NVIDIA card and an external
monitor.
2. Install NVIDIA drivers > 450.57 and run in PRIME Render Offload mode.
(450.57 is when support for external displays using this configuration was
added)
3. Attempt to enable external monitor(s)
OBSERVED RESULT
When external monitors are enabled nothing happens at first, systemsettings5
shows that external monitors are enabled despite the fact they are clearly not.
When moving monitors in the Display Configuration systemsettings5 crashes and
all displays go black, with only the mouse still visible. The mouse can be
moved and interact with applications.
EXPECTED RESULT
External monitors work and show display output.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu, Gentoo, and Arch
(available in About System)
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
Tested on Kubuntu, Arch, and Gentoo with both OpenGL and XRender backends, same
results. I have heard other uses have had success on other desktop environments
though I have yet to confirm those claims.
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