Hi,

I happened to put a second screen at my laptop today.
It was in school and I set the projector as main screen in KDE settings.

I forgot to remove that setting and now my laptop thinks he is not the primary screen anymore (even though it is listed as that in xrandr and KDE settings).
That means the dialog to log in to my WLAN never reaches me - it only appears on the main screen.
Also, I can no longer see what applications I have open (taskbar not visible).

Now here's the weird part:
If I add a second monitor, the laptop will be considered as main screen.
When I pull the cable, the Laptop thinks it's not primary anymore and doesnt show my beloved taskbar.

This is extremely frustrating and I'm running out of ideas.
This is what I tried:
- remove .kde4/ from home
- remove plasma entirely and install again
- use another desktop environment (works wonderfully)

Maybe this is a combination of wicked sddm configs for plasma only, I don't know.
Other WM work with SDDM but plasma happens to act weirdly.


Hope I'm right here.

- zokker

zreally wrote:This is extremely frustrating and I'm running out of ideas.
This is what I tried:
- remove .kde4/ from home
- remove plasma entirely and install again

If this is Plasma5, the monitor settings are stored in ~/.local/share/kscreen/, so try to remove that directory.

Maybe this is a combination of wicked sddm configs for plasma only, I don't know.
Other WM work with SDDM but plasma happens to act weirdly.

This has nothing at all to do with SDDM, SDDM is the *login* screen.

Thanks, but that did not do the trick.
The taskbar was still missing and still no icons.

Did you do it while not logged in to Plasma?

Maybe try to delete the plasma configuration then too:
~/.config/plasma-org.kde.plasma.desktop-appletsrc
This should start fresh with the default layout.

You will lose all customizations to the desktop then of course, so maybe make a backup first (or just rename the file).

I wasn't logged in. BUt removins the said file in the .config folder did the trick.
Thank you very much.

If you care to know, the content of the old plasma-org file contained a line "lastScreen" which had the key 1 so that was the place where it was messed up.

zreally wrote:If you care to know, the content of the old plasma-org file contained a line "lastScreen" which had the key 1 so that was the place where it was messed up.

Well, then removing this line (or setting it to 0 or -1) should have helped too, I suppose.

What Plasma version are you actually using btw?

If it's the latest one (5.8 ), you may want to file a bug report at http://bugs.kde.org/ if there isn't one already (with earlier versions that probably doesn't make much sense).

On a quick look, I found these bug reports that sound related though:
https://bugs.kde.org/show_bug.cgi?id=368818
https://bugs.kde.org/show_bug.cgi?id=356608
https://bugs.kde.org/show_bug.cgi?id=368981
https://bugs.kde.org/show_bug.cgi?id=355466
(and some others)