https://bugs.freedesktop.org/show_bug.cgi?id=67359
--- Comment #2 from Jim Schutt 74.schutt@gmail.com --- 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.
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?
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).
could have tickled a bug that prevents my card from reporting it is direct-rendering capable. Isn't this the place to report possible bugs in the DRI code in the upstream kernel?
So, please don't resolve this as fixed just yet.