Bug 460399 - [wayland][plasma 5.26.0] multi-monitor setup plasma fails to switch primary and presents non primary layout
Summary: [wayland][plasma 5.26.0] multi-monitor setup plasma fails to switch primary a...
Status: RESOLVED DUPLICATE of bug 385135
Alias: None
Product: plasmashell
Classification: Plasma
Component: generic-multiscreen (show other bugs)
Version: git-stable-Plasma/5.26
Platform: Arch Linux Linux
: NOR normal
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-10-13 23:18 UTC by cellstije
Modified: 2022-10-14 09:00 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


Attachments
journalctl output (209.23 KB, text/plain)
2022-10-13 23:18 UTC, cellstije
Details

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Description cellstije 2022-10-13 23:18:49 UTC
Created attachment 152793 [details]
journalctl output

SUMMARY

I have a dual monitor setup (1 DP monitor and 1 hdmi TV) where only 1 screen is on as default.
When I turn on second monitor (TV) and ask plasma to switch primary out to second monitor (TV) and turn off the primary out (DP) -- I use the Display Configuration Widget for this --, the wallpaper changes (becomes the wallpaper of the secondary monitor I use when both are on) and the widgets that are placed on the primary monitor disappear.

I also noted that if at login the  secondary monitor (TV) is turned on, KDE does not see it (I cannot switch output) and the desktop is shown only on the primary monitor (default behavior)
To get KDE to 'see' the TV I have to turn it off and on again
The above was not happening with latest 5.25.5

All above using wayland 

below output of journalctl when trying to switch output from DP to hdmi (TV turned on and I want to see the desktop on TV and DP off)

My system as below (Archlinux with latest KDE& Plasma)

Operating System: Arch Linux
KDE Plasma Version: 5.26.0
KDE Frameworks Version: 5.99.0
Qt Version: 5.15.6
Kernel Version: 6.0.1-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 5900X 12-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: AMD Radeon RX 6800
Comment 1 cellstije 2022-10-13 23:21:29 UTC
Note that in order to get back the primary monitor default layout I need to logout and login again (aka correct  wallpaper and plasma widget on desktop)
Nothing else works
Comment 2 Felix Miata 2022-10-13 23:35:04 UTC

*** This bug has been marked as a duplicate of bug 385135 ***
Comment 3 cellstije 2022-10-14 09:00:04 UTC
Hi,

note that the switching of layout (primary to secondary) happens also when:

* only one monitor is on
* monitor goes in (screen) power saving and turns off
* system is woken from screen power saving by end user.

Tthe end-user is presented with secondary monitor wallpaper, primary monitor plasma widgets are gone and there is no way to get them back:
Ticking and un-ticking 'primary' option in System Settings->Display amd Monitor achieve nothings

This bug is actually a duplicate of bug:

https://bugs.kde.org/show_bug.cgi?id=458847

that was supposed to be fixed in 5.26.0