Bug 247205

Created attachment 49958 [details]
Plasma panel after the described steps to reproduce (to the left)

Version:           unspecified (using KDE 4.4.5) 
OS:                Linux

I use an Asus Eee laptop with an internal screen of 1024x600. Also I got two vertical plasma bars which are maximised.

These days I normally use a 1680x1050 monitor attached since it's simply much more convenient to work with (when being stationary at home).

Due to https://bugzilla.redhat.com/show_bug.cgi?id=621990 I start up X and KDE without that monitor attached, then I attach it afterwards and in the KDE screen settings, I set the external one to its 1680x1050 resolution, the internal 1024x600 one to "Disable" and then I click apply (settings visible in attached screenshot). Subsequently, output is changed to the external screen including all plasma panels and windows.

Now when that happens, only one of my two vertical panels considers keeping it's maximised state (and enlarging to the whole screen height) while the other just doesn't seem to care to resize and keeps the old 600 pixel height before the output was changed to the larger screen, so I have to unlock widgets, go into panel settings and click Maximise everytime after a reboot again.

Attached screenshot shows the panel at short length when having the external screen attached and output changed to it after firing up X and KDE.

Reproducible: Always

Steps to Reproduce:
1. Start X and KDE with internal 1024x600 screen
2. Attach 1680x1050 screen (external), change output to it and maximise panels
3. Reboot
4. Start X, KDE with 1024x600 again (external screen removed)
5. Reattach external screen and change output to it

Actual Results:  
One panel is unmaximised again and doesn't adapt size to larger, attached monitor (remains at 600 pixels as I checked in GIMP, the old internal resolution before having the external screen attached)

Expected Results:  
All panel stay maximised and keep full screen length even with output changed to a larger screen

bash-4.1$ plasma-desktop --version
Qt: 4.6.3
KDE Development Platform: 4.4.5 (KDE 4.4.5)
Plasma Workspace: 0.3
bash-4.1$