https://bugs.kde.org/show_bug.cgi?id=437734
Bug ID: 437734
Summary: External displays doesn't show picture wia dock
station. After Kubuntu release upgrade
Product: systemsettings
Version: 5.21.4
Platform: Kubuntu Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: kcm_kscreen
Assignee: kscreen-bugs-n...@kde.org
Reporter: wlodzimierz.ciesiel...@nokia.com
CC: plasma-b...@kde.org
Target Milestone: ---
SUMMARY
At Kubuntu 20.10 everithing works fine. After update to Kubuntu 21.04 I have a
bug with connection to external monitors wia dock station.
Direct connection wia HDMI works fine.
Laptop: Lenovo ThinkPad T490
STEPS TO REPRODUCE
1. Connecting monitors wia dock station
2. N/A
3. N/A
OBSERVED RESULT
At "Display Configuration" I see that monitors are detected correctly. And when
mouse moved to borders it's moved like to another display, looks that monitors
are available. But monitors show that "Cable is not connected". Laptop start to
work very slow (long animation time, and widgets loading).
Memory and CPU consumption is almost the same as before connection to monitors.
EXPECTED RESULT
Monitors displays picture, and laptop work fast as before connection.
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma: Kubuntu 21.04
(available in About System)
KDE Plasma Version: 5.21.4
KDE Frameworks Version: 5.80.0
Qt Version: 5.12.2
ADDITIONAL INFORMATION
It's my working laptop, and I should decide to stay on fresh Kubuntu. Can I
collect logs somehow ?
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