https://bugs.kde.org/show_bug.cgi?id=454755
Bug ID: 454755
Summary: Screen cycles 22 seconds off, 4 seconds on, only with
Wayland
Product: Powerdevil
Version: 5.24.5
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: cantabile.d...@gmail.com
Target Milestone: ---
SUMMARY
When powerdevil turns off the screen after X minutes of inactivity, the screen
constantly turns back on for ~4 seconds, then stays off for ~22 seconds, then
turns on again for ~4 seconds, and so on indefinitely. The backlight stays off,
though.
This only happens in the Wayland session. The screen stays off solidly in the
X11 session.
This suspicious message appears in journalctl every 30 seconds, but not all the
time, and not just when the screen is off:
Jun 02 18:32:52 home xdg-desktop-portal-kde[203852]: xdp-kde-background:
GetAppState called: no parameters
STEPS TO REPRODUCE
1. Pick the Wayland session when you log in
2. Wait for the screen to turn off, or turn it off with this command I found at
askubuntu.com:
sleep 1 && dbus-send --session --print-reply --dest=org.kde.kglobalaccel
/component/org_kde_powerdevil org.kde.kglobalaccel.Component.invokeShortcut
string:'Turn Off Screen'
3. Turn the screen towards a light source, otherwise the difference is not
really visible
4. Wait
OBSERVED RESULT
The screen continuously turns on and off.
EXPECTED RESULT
The screen should stay off.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux
(available in About System)
KDE Plasma Version: 5.24.5
KDE Frameworks Version: 5.94.0
Qt Version: 5.15.4+kde+r146-1
Kernel version: 5.18.0-arch1-1
ADDITIONAL INFORMATION
The computer is a laptop, HP 250 G7.
The CPU is Intel Core i3 7020u, with Intel 620 graphics.
The screen is a cheap TN type made by BOE, connected through eDP. It's the
internal screen, and I don't have any external ones connected.
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