Bug#537959: [xserver-xorg-video-intel] Lost hardware rendering when upgraded to 2.8.0-1

[Brice Goglin <Brice.Goglin@ens-lyon.org>]

Huy wrote:
> Hi there, thanks for checking it out.
>
> I'm confused, it's the same kernel, worked before driver upgrade, did not work after.
>   

Intel 2.8 enforces the UXA acceleration. You might have been running
with EXA instead with the old driver.
Only UXA requires kernel GEM support.

> Unless I missed a config in my custom kernel, in which case could you give a hint as to which option
> I should have enabled?
>   

CONFIG_AGP
CONFIG_AGP_INTEL
CONFIG_DRM
CONFIG_DRM_I915
should be enough

Brice