https://bugzilla.kernel.org/show_bug.cgi?id=43209

Luis Montes lamr64@gmail.com changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |lamr64@gmail.com

--- Comment #2 from Luis Montes lamr64@gmail.com 2012-09-04 04:35:19 --- Same here, on a 3.2.0-29-generic-pae kernel with a PCIe radeon: VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Turks [Radeon HD 6570] I get: [drm:r600_ring_test] *ERROR* radeon: ring test failed (scratch(0x8504)=0xCAFEDEAD) radeon 0000:01:00.0: disabling GPU acceleration

I don't get acceleration, but other than that, the system works reasonably well, so that might be the reason some people don't see the problem?

There was a similar report on the lkml about a year ago, but I tried a similar patch to that described in there and it caused a panic.

https://lkml.org/lkml/2011/6/3/277