https://bugs.kde.org/show_bug.cgi?id=513824
Bug ID: 513824
Summary: Intermittent green screen or crash when switching
between graphical user sessions with differing HDR
settings (Wayland)
Classification: Plasma
Product: plasmashell
Version First 6.5.4
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Session Management
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
Description
On KDE Plasma Wayland, switching between two concurrently logged-in graphical
KDE user sessions intermittently results in a green screen, compositor crash,
or otherwise unstable display state when HDR is enabled in one session and
disabled in the other. Sometimes, the crash resets and restricts the display
resolution at 640x480 while saying that plasmashell has crashed.
The issue does not occur deterministically. The failure rate is approximately
20% when repeatedly switching between sessions. When both user sessions have
matching HDR settings, the issue has not been observed and switching appears
stable.
Steps to Reproduce
System running KDE Plasma on Wayland with an NVIDIA GPU.
User A logs into a graphical KDE session and enables HDR:
System Settings → Display and Monitor → HDR → Enabled
User B logs into a graphical KDE session with HDR disabled.
Switch between the two logged-in users using VT switching or fast user
switching.
Repeat the switch several times.
Expected Result
Switching between graphical user sessions should be reliable and not cause
crashes or display corruption, regardless of per-user HDR configuration.
Actual Result
After several switches (approximately 1 in 5):
Green screen
Compositor or shell crash
Display becomes unusable until logging out or rebooting
Workaround
Configure identical HDR settings for all logged-in user sessions (either
enabled for all or disabled for all). With matching HDR state, switching
between users appears stable.
--
You are receiving this mail because:
You are watching all bug changes.
