Posted Nov 2, 2012 21:50 UTC (Fri) by colo (subscriber, #45564)
[Link]
Are you sure you have the radeon firmware blobs installed and properly loaded by the DRM module? Without them, you won't get properly hw-accelerated OpenGL on many of AMDs more recent GPUs.
A bit out of date
Posted Nov 2, 2012 23:04 UTC (Fri) by luto (subscriber, #39314)
[Link]
Updating drivers to git from today fixed it. Tiling makes a big difference on low-end (and thus low memory bandwidth) radeons, apparently.