Hallo!
really? which video drivers do you use? the proprietary nvidia or ati drivers ?
LG Georg
here is a list of drivers for videos cards, you could find what you have available here : /lib/modules/yourkernel/kernel/drivers/video
I took this list on my laptop which used the i810 driver, you could check into your list or this one which drivers are libre or non-libre :-)
aty/ hgafb.ko.gz matrox/ radeonfb_old.ko.gz sstfb.ko.gz v gastate.ko.gz cirrusfb.ko.gz i810/ neofb.ko.gz riva/ tdfxfb.ko.gz console/ intelfb/ s1d13xxxfb.ko.gz tridentfb.ko.gz cyber2000fb.ko.gz kyro/ nvidia.ko savage/ vfb.ko.gz geode/ macmodes.ko.gz pm2fb.ko.gz sis/ vga16fb.ko.gz