System Settings - Size & Orientation don't survive a reboot

[Pieter Hulshoff]

> I just installed Kubuntu 11.4 on my desktop machine with tripple monitor, but for some reason the tripple monitor setup doesn't survive a reboot. When I changed it from tripple clone to tripple monitor setup, it worked fine, but after a reboot it always reverts back to dual monitor setup + a clone. I can change it to 1 - 2 - 3 in the System Settings - Size & Orientation (and it works fine), but after a reboot it always comes back as 1 - 1 - 2. Any thoughts on how to fix this? I've already Googled around, but none of the mentioned solutions seem to work for me.

It seems I need to add something: Monitor 1 and 3 are set to 1600x1200; monitor 2 is set to 1920x1200. When cloned after reboot, monitor 2 is also set to 1600x1200.
I have that same problem when only using monitor 2 and 3; it will support the 2 monitor setup even through a reboot, but will reset the resolution of monitor 2 to 1600x1200 on every reboot.
Using only monitor 2 works fine of course; 1920x1200 all the way.
*sigh*

Kind regards,

Pieter Hulshoff