I am using two Flatscreen monitors with an physical resolution each of 1280x1024 pixel.
I had extended that with an virtual resolution of 1600x1200 each resulting in an virtual desktop of 3200x1200.
This has worked for years without problems on several nvidia-cards usning the proprietary drivers from nvidia.
However since Nvidia brougth out their 300.xx versions of their drivers the above the physical resolution is corrupted and the pannels and widgets which have been placed above this area are permantly moved back into the Area of the physical resolution.
So I get now on each screen an area of 1280x1024 where everything is ok withiin and on the right- and the bottom-side an corrupted area up to the borders of 1600x1200 pixel.
Nvidia-support seems not to know about those problems and as it only seem to happen with xfce . . .
The latest driver I could use without those problems was 295.59.Returning to this driver solves this problem but causes other stbility problems (it's quite oudated).
I suspected X itself and the Nvidia-driver but I also found out that it only happens with xfce (4.8 and 4.10). Kde, razor-qt or lxde donot show this behaviour.
Please find below some of the lines out of my xorg.con that migth be relevantf:
Option "TwinView" "1"
Option "TwinViewXineramaInfoOrder" "CRT-0"
Option "Stereo" "0"
Option "nvidiaXineramaInfoOrder" "CRT-0"
Option "metamodes" "CRT-0: 1280x1024 @1600x1200 +0+0, CRT-1: 1280x1024_75 @1600x1200 +1600+0"
Has anybody experienced similar problem or even found a solution for that ??
Hmm, no ideas at all yet ?