[Bug 64257] RS880 issues with r600-llvm-compiler

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=64257

--- Comment #21 from Mike Lothian <mike@fireburn.co.uk> ---
I got KDE up and running by putting:

#!/bin/bash
export R600_LLVM=0 

into ~/kde4/env/r600_llvm.sh

I then ran R600_LLVM=1 vblank_mode=0 glxgears

The machine locked up and I wasn't able to SSH in - this however was in
/var/log/messages 

May 29 20:49:19 quark kernel: radeon 0000:01:05.0: GPU lockup CP stall for more
than 10000msec
May 29 20:49:19 quark kernel: radeon 0000:01:05.0: GPU lockup (waiting for
0x000000000000c695 last fence id 0x000000000000c694)
May 29 20:49:19 quark kernel: [drm] Disabling audio support
May 29 20:49:19 quark kernel: radeon 0000:01:05.0: Saved 1081 dwords of
commands on ring 0.
May 29 20:49:19 quark kernel: radeon 0000:01:05.0: GPU softreset: 0x00000019
May 29 20:49:19 quark kernel: radeon 0000:01:05.0:   R_008010_GRBM_STATUS     
= 0xA00024AC
May 29 20:49:19 quark kernel: radeon 0000:01:05.0:   R_008014_GRBM_STATUS2    
= 0x00000003
May 29 20:49:19 quark kernel: radeon 0000:01:05.0:   R_000E50_SRBM_STATUS     
= 0x20000040
May 29 20:49:19 quark kernel: radeon 0000:01:05.0:   R_008674_CP_STALLED_STAT1
= 0x04000000
May 29 20:49:19 quark kernel: radeon 0000:01:05.0:   R_008678_CP_STALLED_STAT2
= 0x00040002
May 29 20:49:19 quark kernel: radeon 0000:01:05.0:   R_00867C_CP_BUSY_STAT    
= 0x00008486
May 29 20:49:19 quark kernel: radeon 0000:01:05.0:   R_008680_CP_STAT         
= 0x80858645
May 29 20:49:19 quark kernel: radeon 0000:01:05.0:   R_00D034_DMA_STATUS_REG  
= 0x44C83D57
May 29 20:49:19 quark kernel: radeon 0000:01:05.0:
R_008020_GRBM_SOFT_RESET=0x00007FEF
May 29 20:49:19 quark kernel: radeon 0000:01:05.0: SRBM_SOFT_RESET=0x00000100
May 29 20:49:19 quark kernel: radeon 0000:01:05.0:   R_008010_GRBM_STATUS     
= 0xA0003030
May 29 20:49:19 quark kernel: radeon 0000:01:05.0:   R_008014_GRBM_STATUS2    
= 0x00000003
May 29 20:49:19 quark kernel: radeon 0000:01:05.0:   R_000E50_SRBM_STATUS     
= 0x20008040
May 29May 29 21:07:10 quark syslog-ng[2189]: syslog-ng starting up;
version='3.4.1'

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