Bug#630345: xserver-xorg-video-radeon: Xserver crashes with HD6700M card

[Alex Deucher]

On Mon, Jun 13, 2011 at 2:50 AM, Craig Small <csmall at debian.org> wrote:
> Package: xserver-xorg-video-radeon
> Version: 1:6.14.2-1
> Severity: important
>
> I have one of these dual card laptops. It works fine with the simple Intel
> driver.
> I made a small xorg.conf file and rebooted. This file only specified the radeon
> driver and the BusID.
> When I did that the server crashed every time.

Is there an option in your bios setup to select the discrete graphics?
Try selecting that. vgaswitcheroo only supports hybrid GPUs with
display MUXes. Some new laptops are MUX-less whihc means the display
hardware is only attached to one of the GPUs and the other one is
strictly used for rendering. Unfortunately, the X server needs a lot
of work to support that scenario so it will not be supported any time
soon in the open source drivers.

Alex