Created attachment 15850 [details]
log of  Vector-5.9 - xorg.conf

I never hade any problems with the screen in Linux. 
Last week, I installed VectorLinux Light (5.9) with xorg 7.3 (server 1.4) and in the default xorg.conf the Colour was set to 24 - see http://www.kult-ex.org/X11/vector-5.9-xorg.conf.txt

24 never worked propperly on this chipset - there is a picture, but there are horizontal stripes running down, which flicker.
Until now - the defaiult value was all the time 16 - see http://www.kult-ex.org/X11/vector-5.8-xorg.conf.txt

I set the default value to 16 and then the picture freeses as soon as x starts - you see in the middle the x (of the mouse) and horizontal strips which are green and blue - no picture - the only thing the keyboard reacts is strg+alt+del to reboot - see

http://www.kult-ex.org/X11/Vector-5.9[16]-Xorg.0.log.txt - it is also attached

I tried also Arch Linux - the same ting