Bug 52313 - r600g: Linux 3.3.x broken since 30257c32
Summary: r600g: Linux 3.3.x broken since 30257c32
Status: RESOLVED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/Gallium/r600 (show other bugs)
Version: git
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Default DRI bug account
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Reported: 2012-07-20 14:37 UTC by Stefan Dösinger
Modified: 2012-09-03 11:23 UTC (History)
0 users

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Description Stefan Dösinger 2012-07-20 14:37:04 UTC 
Since Mesa commit 30257c32910c3f7ac2b9cc24399d6be196d34d26 r600g fails to render anything on Linux 3.3 and probably all earlier versions. An upgrade to 3.4 fixes the issue.

The output from glxinfo is:
radeon: The kernel rejected CS, see dmesg for more information.

This is accompanied by the following lines in dmesg:
[199859.400626] radeon 0000:01:00.0: forbidden register 0x00028b28 at 188
[199859.400628] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !

My understanding is that Mesa is intended to remain backwards compatible with older kernels. If this is not the case feel free to close the bug.
Comment 1 Jerome Glisse 2012-07-20 15:23:18 UTC 
Fixed in mesa master
Comment 2 Andreas Boll 2012-09-03 11:23:46 UTC 
(In reply to comment #1)
> Fixed in mesa master

Marking this bug as fixed.

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