Looking at the Xorg log it appears that the AUO display does not have everything needed in it's EDID info. Either it's EDID info is incomplete or it does not support the standard VESA modes needed (such as 1280x800@60hz).
Looking at the Xorg log it appears that the AUO display does not have everything needed in it's EDID info. Either it's EDID info is incomplete or it does not support the standard VESA modes needed (such as 1280x800@60hz).