Comment 40 for bug 442194

For installation we still use fbdev driver - for each and everyone (unless you disabled kernel framebuffer, then you get vesa driver). If the issue also occurs during installation, we would have a general issue in X, since after installation the native driver should be running. More likely is that we see a kernel issue here. In any case please provide /var/log/Xorg.0.log, preferrably without any xorg.conf in place.