Intel driver not detecting device

[Dave Airlie]

On Sun, May 19, 2013 at 8:17 AM, Fredrik Tolf <fredrik at dolda2000.com> wrote:
> On Fri, 17 May 2013, Dave Airlie wrote:
>>>
>>> The Xorg server has suddenly stopped working with my Intel GPU, and I'm a
>>> bit baffled as to why. The driver just tells me "No devices detected",
>>> even
>>> though it used to work perfectly well.
>>
>>
>> Try adding Option "AutoAddGPU" "FALSE" to the xorg.conf
>
>
> I see. Should I interpret this as meaning that my currently running primary
> X server has somehow "locked" the Intel GPU without using it, leaving the
> second X server incapable of using it? In that case, I think I'll have to
> wait for a more opportune moment to restart my primary X session in order to
> be able to test that.
>
> If I may ask, though; what does that kind of locking mean? In just what way
> is the Intel device "reserved" even though it's not actually used?

Its loaded a slave driver for it and probably has it configured as a provider.

Dave.