* Does the corruption/distored graphics occur before X ?
* Wondering how much effect this has "Unknown LVDS configuration bits"
Does that issue occur on a non LVDS output - eg. when you have monitor plugged to the VGA and LVDS is off ?
* Does the "distorted graphics" differ if you (re)move the mesa driver nouveau_vieux.so ?
* Why do you have custom modelines in your xorg.conf? Have you tried with a plain (empty) xorg.conf ?
Several interesting points
* Does the corruption/distored graphics occur before X ?
* Wondering how much effect this has "Unknown LVDS configuration bits"
Does that issue occur on a non LVDS output - eg. when you have monitor plugged to the VGA and LVDS is off ?
* Does the "distorted graphics" differ if you (re)move the mesa driver nouveau_vieux.so ?
* Why do you have custom modelines in your xorg.conf? Have you tried with a plain (empty) xorg.conf ?