On Mon, Nov 16, 2009 at 8:52 AM, Alex Deucher <alexdeuc...@gmail.com> wrote:
> On Sun, Nov 15, 2009 at 4:30 PM, Mikko Vinni <mmvi...@yahoo.com> wrote:
>> Hi,
>>
>> after commit a39533b4ddad388b64a20bcabd17ac125fd4ba65
>> (drm/radeon/r600: CS parser updates) landed in mainline
>> (happens still in v2.6.32-rc7-29-ga9366e6) trying to start a 3D app
>> (glxgears or xmoto for example) started to produce the error message
>> "drmRadeonCmdBuffer: -22. Kernel failed to parse or rejected command
>> stream. See dmesg for more info." in the console and "
>> Nov 15 13:39:14 koni kernel: [   64.492404] 
>> [drm:r600_cs_packet_next_reloc_nomm] *ERROR* No packet3 for relocation for 
>> packet at 47.
>> Nov 15 13:39:14 koni kernel: [   64.492416] [drm:r600_packet3_check] *ERROR* 
>> bad SET_CONTEXT_REG 0x28014
>> Nov 15 13:39:14 koni kernel: [   64.492422] [drm:r600_cs_legacy] *ERROR* 
>> Invalid command stream !
>> "
>> in the dmesg. This is on a RV620 : Radeon HD 3450. The problem
>> is more than just the message - the app fails to start.
>>
>> Commenting out the following line added by commit a39533b gives
>> 3d back on this board. But is this a correct fix, or should I just try
>> with newer userspace? I have something new enough to have working
>> direct rendering but not new enough to support KMS on this radeon
>> (Arch Linux's stable versions).
>>
>> Somebody asked about a similar-looking problem today on Arch Linux
>> forums (http://bbs.archlinux.org/viewtopic.php?pid=656417, message #192).
>
> NACK.
>
> Update mesa.  The fix is in the 7.6 and master branches.  The driver
> needs to emit a reloc for that register and it isn't being used yet
> anyway.
>

Later when this stuff hits a released kernel we need to start bumping versions
but since it hasn't been released upstream, distros need to take responsibility

Dave.

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