https://bugs.kde.org/show_bug.cgi?id=396354
Bug ID: 396354
Summary: Management of multiple screens: Display and Monitor
settings no longer remembered
Product: KScreen
Version: 5.13.2
Platform: Archlinux Packages
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: common
Assignee: se...@kde.org
Reporter: bugreporte...@gmail.com
Target Milestone: ---
We have multiple computers running Arch Linux and using 3 displays. This worked
reasonably well until the last couple weeks. Now the monitor settings are not
remembered and must be reconfigured in KDE System Settings each time. Here is a
specific example:
Lenovo ThinkPad laptop with Intel HD Graphics 620
plasmashell 5.13.2
Linux 4.17.3-1-ARCH #1 SMP PREEMPT Tue Jun 26 04:42:36 UTC 2018 x86_64
GNU/Linux
Lenovo dock with 3 1920x1080 monitors attached
* Expected behavior (which has been working for the last year):
Connect laptop to the dock and the 3 external monitors are activated
automatically and the layout (size, position, etc.) was remembered. Docking
"just worked" (although not if the computer was at sddm screen; user had to be
logged into plasmashell when docking or undocking).
* New problematic behavior (started in last few weeks):
Connect laptop to the dock and the 3 external monitors are NOT activated
automatically. Getting them to work requires going into System Settings and
enabling each monitor, then positioning them in the correct layout.
Similar issues are observed on another laptop using 2 external monitors without
a dock (via display ports on the laptop). Also, several desktop systems are now
showing similar behavior. Upon reboot, the multimonitor settings are lost and
must be reconfigured in KDE System Settings each time.
No related errors are shown in the logs. The monitors do work once configured.
So the issue appears to be related to lost configuration / settings each time a
laptop is docked / undocked (definite; confirmed on multiple laptops) (and, I
think, possibly each time a desktop is restarted; observed several times but
not yet replicated on other desktops).
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