The solution is make the left desktop primary in settings, then make the right one primary,
This makes them display, then I have to set my desired wallpaper.
After a reboot its back as it was as per the above screenshot.
As you say, this is not a solution. Don’t do this.
The issue falls into the KDE multi-monitor bugs category and will be finally solved with Plasma 6/Qt6 version.
For now, you can try finding a workaround for everyday usage.
Clean plasma cache
Delete plasma kscreen rc (and possibly other related rc files) in $XDG_CONGIG_HOME, so will be recreated on login
Don’t change wallpapers monitors; layout too often
Don’t set both monitors as Primary, which should be done from Plasma automatically, but there are some log messages that contradict…
Don’t use Auto-login (it’s not clear for me in the logs )
or other method.
I am sure KDE devs have a good knowledge about this, but it wouldn’t hurt if you added your related journal log part (including kscreen, plasmashell, kwin_x11 included lines).
Hi thanks for the reply, I am not setting both as primary/I go through the dialog… its more like a toggle there one screen is if you set the other then the previous one is not, But so far its the only way I have found. Oh I forgot this is a fresh install.
No auto login is security hole I login normally.
mmm logs that contradict I did not know what to put in and what not.
"
I am sure KDE devs have a good knowledge about this, but it wouldn’t hurt if you added your related journal log part (including kscreen, plasmashell, kwin_x11 included lines)."
specific command pls ! I have errors when I tick the boxes in log generation tool, a valid link is not provided so I cant past one.
I’ve noticed this bug two or three times thus far, especially when my monitors turn off due to a period of inactivity. When I turn them on, there is a small chance that one of the desktops will have the default wallpaper.
Since it does not happen very often (like I said, in many months of using this dual monitor setup, I’ve seen it only two or three times), I just change the wallpaper manually.
But it is definitely a bug with Plasma 5 and if you’re experiencing it very often, I can see how it might be annoying.
I’m sure they know about it. In any case, I can’t reliably reproduce it, so I won’t be the one reporting it.
Furthermore, KDE has a terrible bug tracker and you have to make a temporary email address every time you use it, otherwise they show your email to the world. I shall have nothing to do with it.
So why did they let me create a new bug report in the old site?
It’s not migrated to the new one automatically, and I think not everything is transferred (at least those I was reading during my report).
Really? OK, if you have found the way and their structure, when you find time, post a link to the Multi-Monitor tag/category/whatever, so we can laugh a little during our break time