https://bugs.kde.org/show_bug.cgi?id=520975
Bug ID: 520975
Summary: MST Daisy chain on dell leads to freeze when selecting
100hz on either monitor
Classification: Plasma
Product: kwin
Version First 6.6.5
Reported In:
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: multi-screen
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 192824
--> https://bugs.kde.org/attachment.cgi?id=192824&action=edit
logs around one of the crashes
DESCRIPTION
When daisy chaining my second benq monitor to my Dell P2725HE and setting any
of the two monitors Refresh rate to 100hz, major lags occur to the point where
the system gets unusable until disconnected again.
STEPS TO REPRODUCE
1. Boot up fedora 44 with 1 monitor connected (with both, the freeze happens
before getting to the login screen)
2. have the refresh rate of one of the two set to 100hz.
3. connect second benq monitor with a displayport cable via MST (daisy chaining
through monitor integrated dock)
OBSERVED RESULT
System lags more and more until unusable; disconnecting daisy chained montitor
restores normal function of fedora 44.
EXPECTED RESULT
SOFTWARE/OS VERSIONS
Operating System (available in the Info Center app, or by running `kinfo` in a
terminal window):
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
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