Probably fixed by upstream (freedesktop.org) commit 0ca184c3c35032df39ea7ce5d2d4aba1a97b6426 "RADEON: fix RADEONInitDispBandwidth() on single crtc cards"
Probably fixed by upstream (freedesktop.org) commit 0ca184c3c35032d f39ea7ce5d2d4ab a1a97b6426 andwidth( ) on single crtc cards"
"RADEON: fix RADEONInitDispB