https://bugs.kde.org/show_bug.cgi?id=493587
Bug ID: 493587
Summary: Delayed video signal recovery after inactivity-induced
screen blanking
Classification: Plasma
Product: KScreen
Version: 6.0.5
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: cantf...@gmail.com
Target Milestone: ---
Created attachment 174028
--> https://bugs.kde.org/attachment.cgi?id=174028&action=edit
journalctl log when the screen is black.
SUMMARY
After resuming from sleep, the display does not receive a signal. This occurs
both on the lock screen and after blindly unlocking the system by entering the
password. When switching to another TTY, the signal is restored, but switching
back to the TTY running X11 causes the signal to be lost again. The time it
takes to recover video output on X11 varies from seconds to minutes.
STEPS TO REPRODUCE
1. Leave the system idle until the screen blanks (signal lost, but screen stays
on).
2. Attempt to wake the screen by moving the mouse or pressing keys.
OBSERVED RESULT
The screen stays black (no signal), even though the keyboard is functional. It
could take more than a minute before the signal is restored. Switching to
another TTY works, but switching back to X11 cuts the signal again.
EXPECTED RESULT
The display should resume as soon as the system receives input (mouse movement
or keyboard press).
SOFTWARE/OS VERSIONS
KDE Plasma 6.0.5
KDE Framework 6.5.0
Qt 6.7.2
ADDITIONAL INFORMATION
Using X11
Nvidia GTX 1080 Ti (Driver version: 550.107.02)
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