[Bug 67359] No direct rendering with Radeon HD 7750

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67359

--- Comment #3 from Tom Stellard <tstellar at gmail.com> ---
(In reply to comment #2)
> It turns out my root filesystem is on a bcache-backed device, so I need to
> use a 
> 3.10 or newer kernel - AFAICS the latest stable gentoo-sources kernel is
> 3.8.13.
> 

I would recommend trying the 3.10 stable kernel then.

>
> FWIW my VIDEO_CARDS did include radeon, but not radeonsi. I interpret this
> bit of
>   /usr/portage/profiles/desc/video_cards.desc
> to mean that including "radeonsi" restricts the build to only support SI, not
> add support for it:
> 
> radeon - VIDEO_CARDS setting to build driver for ATI radeon video cards
> radeonsi - VIDEO_CARDS setting to build only Southern Islands based chips
> code for radeon
> 
> Am I reading that wrong?
> 

I think you are correct here.

> The Xorg log I posted shows the radeon driver is being used, and probed my
> card as 
> having a VERDE chipset.
> 
> I didn't file a Gentoo bug because I thought that this part of what I
> reported in my dmesg:
> 
> [   11.109017] [drm:r600_uvd_init] *ERROR* UVD not responding, giving up!!!
> [   11.109588] [drm:si_startup] *ERROR* radeon: failed initializing UVD (-1).
> 

I'm not sure why uvd fails to load, this should be filed as a separate bug.  I
don't think it's related to your direct rendering problems.


> 
> So, please don't resolve this as fixed just yet.

This looks to me like a gentoo packaging bug.  llvmpipe is using LLVM 3.1 and
radeonsi in Mesa 9.1.* requires a patched LLVM 3.2.

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