https://bugs.kde.org/show_bug.cgi?id=488270
Bug ID: 488270
Summary: Displays lose setting when waking from power save.
Classification: Plasma
Product: kwin
Version: 6.0.5
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: docw2...@yahoo.com
Target Milestone: ---
Created attachment 170301
--> https://bugs.kde.org/attachment.cgi?id=170301&action=edit
journalctl of wake process
SUMMARY
When monitors wake up from power save (just turning the displays off, not full
sleep) sometimes settings are lost and rotation, position and sizing is lost.
It happens about 25% of the time.
2 Samsung Odyssey Neo G8 32" 4k monitors. Both connected with DP
1 LG TV 1920x1080. Connected with HDMI
The 2 monitors are side by side with one monitor horizontal and one monitor
vertical. The TV gets turned on infrequently and is above the horizontal
monitor.
The monitors are set to 3840x2160 120hz with no scaling and the horizontal
monitor being primary.
Using the latest version of plasma 6 (wayland) on arch.
My computer is set to never sleep but to turn off displays after 15 minutes.
The issues happens when waking the displays.
STEPS TO REPRODUCE
1. Let the monitors enter power save.
2. Wake up monitors at a later point
OBSERVED RESULT
When waking the monitors from power save both monitors wake up but 25% of the
time one or more of the following happens.
One or both displays are rotated incorrectly.
Screens will swap places (left/right)
Primary display will switch.
Scaling of one or both monitors will change.
EXPECTED RESULT
Screens (position, orientation, scaling, primary etc.) stay as they were before
turning off for power save.
SOFTWARE/OS VERSIONS
Arch Linux Kernel Version: 6.9.3-arch1-1 (64-bit)
KDE Plasma Version: 6.0.5
KDE Frameworks Version: 6.2.0
Qt Version: 6.7.1
ADDITIONAL INFORMATION
GPU doesn’t matter. Wife has same displays/setup. I have Nvidia GTX 1070. Wife
has Radeon 7900XTX. Issue is the same with both setups, leading me to believe
its something cause by the monitors.
No issues on boot. Only happens when waking from power save or turning on the
TV (adding as 3rd monitor)
I am new to Linux, please let me know if I can add any additional useful
information, or find better logs somewhere different.
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