Bug#516210: xserver-xorg-video-radeonhd: "unsupported chipset" despite 1650
Jeff Abrahamson wrote:
> Package: xserver-xorg-video-radeonhd
> Version: 1.2.5-1
> Severity: normal
> Further details. I suspect that, despite claiming that the X1650
> chipset is supported, it is not fully. Excerpts from my most recent
> (EE) RADEONHD(0): [dri] CP_INIT failed
> (EE) RADEONHD(0): RHDDRIFinishScreenInit: RHDDRIKernelInit Failed.
> (EE) RADEONHD(0): TMDSBVoltageControl: unhandled chipset: 0x71C7.
> (EE) RADEONHD(0): RHDCSStop: Command Submission backend is not active!
You need to install firmware-linux, see the kernel log.