https://bugs.kde.org/show_bug.cgi?id=474508
Bug ID: 474508
Summary: Almost completely black screen after waking up from
screen energy saving
Classification: Plasma
Product: kwin
Version: 5.27.7
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: core
Assignee: kwin-bugs-n...@kde.org
Reporter: nkwkel...@gmail.com
Target Milestone: ---
After not touching the computer for a long time (10 mins in my config), the
screen will turn off for energy saving. If I move my mouse or press any key on
the keyboard after energy saving, the screen should fully come back but it does
not. Instead, it is completely black except the cursor. Once I move the cursor
to the upper left corner, it will show all windows as normal. However, if I
click on one of the windows, the screen will go black again except the cursor.
A workaround is to switch to tty and then suspend the computer. After waking up
from suspend, the screen will come back as normal.
STEPS TO REPRODUCE
1. Do not touch the computer for long enough to trigger screen energy saving
2. Touch the computer
OBSERVED RESULT
Completely black screen except cursor and the upper left corner thing
EXPECTED RESULT
Show everything as expected
SOFTWARE/OS VERSIONS
Linux: Arch Linux
KDE Plasma Version: 5.27.7
KDE Frameworks Version: 5.109.0
Qt Version: 5.15.10
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