https://bugs.kde.org/show_bug.cgi?id=493446
Bug ID: 493446
Summary: Screen turns off and on when switching between
activities with external screen & laptop lid closed.
Classification: Plasma
Product: kwin
Version: 6.1.4
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: activities
Assignee: kwin-bugs-n...@kde.org
Reporter: i...@rezvin.com
Target Milestone: ---
SUMMARY
Screen turns off and on when switching between activities with external screen
& laptop lid closed.
The bug *does not* appear when using both displays, laptop-only display
(external disabled), or external display only when the lid is open.
Similar bug was described earlier here:
https://bugs.kde.org/show_bug.cgi?id=460794
STEPS TO REPRODUCE
1. Connect external monitor to HDMI port
2. Switch to external screen (laptop screen goes blank) - this step can be
omitted, just close the lid will probably work too
3. Close the lid
4. Switch between activities with any method, i.e. keyboard shortcut, or
activity pager widget
OBSERVED RESULT
Screen goes blank for a second, with observable change in frequency (you can
hear a quiet a high-pitched noise from the display, that usually accompanies
changing resolutions). than the target activity shows up
EXPECTED RESULT
Activities should switch immediately as they are in most cases (i.e. with open
laptop lid).
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.1.4
KDE Frameworks Version: 6.5.0
Qt Version: 6.7.2
Kernel Version: 6.10.6-zen1-1-zen (64-bit)
Graphics Platform: X11
Processors: 8 × AMD Ryzen 5 2500U with Radeon Vega Mobile Gfx
Memory: 14.5 GiB of RAM
Graphics Processor: AMD Radeon Vega 8 Graphics
Manufacturer: Acer
Product Name: Nitro AN515-42
System Version: V1.18
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