Does this still happen with xf86-video-ati 6.12.1? Also does it help if you specify the crtc?
xrandr --output VGA-0 --crtc 1 --mode 1024x768 --below LVDS
Does this still happen with xf86-video-ati 6.12.1? Also does it help if you specify the crtc?
xrandr --output VGA-0 --crtc 1 --mode 1024x768 --below LVDS