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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - No direct rendering with Radeon HD 7750"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67359#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - No direct rendering with Radeon HD 7750"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67359">bug 67359</a>
from <span class="vcard"><a class="email" href="mailto:tstellar@gmail.com" title="Tom Stellard <tstellar@gmail.com>"> <span class="fn">Tom Stellard</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=67359#c2">comment #2</a>)
<span class="quote">> 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.
> </span >
I would recommend trying the 3.10 stable kernel then.
>
<span class="quote">> 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?
> </span >
I think you are correct here.
<span class="quote">> 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).
> </span >
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.
<span class="quote">>
> So, please don't resolve this as fixed just yet.</span >
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.</pre>
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