https://bugs.kde.org/show_bug.cgi?id=463172
Bug ID: 463172
Summary: Adaptive Sync unavailable if display connected after
boot
Classification: Plasma
Product: kwin
Version: 5.26.4
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: ill...@illode.io
Target Milestone: ---
Created attachment 154657
--> https://bugs.kde.org/attachment.cgi?id=154657&action=edit
Adaptive Sync setting in question
SUMMARY
This seems like two separate issues, but the second one needs the first one so
I put them together:
1. Monitors need to be connected at boot in order to have the Adaptive Sync
setting in Display Configuration
2. A monitor set to "Always" or "Automatically" use adaptive sync will be set
to "Never" if kwin doesn't detect Adaptive Sync, meaning it has to be manually
re-enabled after kwin can detect it again.
STEPS TO REPRODUCE
1. Set Adaptive Sync to "Always" or "Automatic" for target monitor
2. Disconnect monitor
3. Reboot
4. After boot, connect monitor
5. Adaptive sync option will be missing
6. Reboot
7. Adaptive sync will be set to "Never"
OBSERVED RESULT
"Adaptive Sync" setting missing from Display Configuration, the gets set to
"Never"
EXPECTED RESULT
Adaptive Sync can changed and the setting persists
SOFTWARE/OS VERSIONS
Kernel: Linux illode 6.0.12-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 08 Dec 2022
11:03:38 +0000 x86_64 GNU/Linux
KDE Plasma Version: 5.26.4
KDE Frameworks Version: 5.101.0
Qt Version: 5.15.7
ADDITIONAL INFORMATION
* I have early KMS setup as described in the Arch Wiki instructions
* GPU: 6900xt, open source drivers (amdgpu).
* Both monitors are using Displayport, one has a Displayport <-> USB-C Adaptor
* I didn't test x11
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