I did find some errors in Xorg.0.log. These are not found when using xserver-xorg-video-ati 1:6.7.194.
drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: open result is 7, (OK)
drmOpenByBusid: Searching for BusID pci:0000:01:00.0
(EE) RADEON(0): [dri] RADEONDRIGetVersion failed to open the DRM
[dri] Disabling DRI.
I did find some errors in Xorg.0.log. These are not found when using xserver- xorg-video- ati 1:6.7.194.
drmOpenDevice: node name is /dev/dri/card0
drmOpenDevice: open result is 7, (OK)
drmOpenByBusid: Searching for BusID pci:0000:01:00.0
(EE) RADEON(0): [dri] RADEONDRIGetVersion failed to open the DRM
[dri] Disabling DRI.
(EE) AIGLX: Screen 0 is not DRI capable