Periodically GPU softreset with Xorg freeze

[Sergej Pupykin]

Hi,

I have periodically X freezes with following (may be incomplete) data
in dmesg.

kernel 2.6.37-rc5
xf86-video-ati 6.13.2
mesa 7.9
KDE 4.5.4
RV620 chipset

no activity needed to reproduce it

***
Dec 10 16:06:54 home kernel: [drm] Disabling audio support
Dec 10 16:06:54 home kernel: radeon 0000:01:00.0: GPU softreset
Dec 10 16:06:54 home kernel: radeon 0000:01:00.0:   R_008010_GRBM_STATUS=0xA0003030
Dec 10 16:06:54 home kernel: radeon 0000:01:00.0:   R_008014_GRBM_STATUS2=0x00000003
Dec 10 16:06:54 home kernel: radeon 0000:01:00.0:   R_000E50_SRBM_STATUS=0x200000C0
Dec 10 16:06:54 home kernel: radeon 0000:01:00.0:   R_008020_GRBM_SOFT_RESET=0x00007FEE
Dec 10 16:06:54 home kernel: radeon 0000:01:00.0: R_008020_GRBM_SOFT_RESET=0x00000001
Dec 10 16:06:54 home kernel: radeon 0000:01:00.0:   R_008010_GRBM_STATUS=0xA0003030
Dec 10 16:06:54 home kernel: radeon 0000:01:00.0:   R_008014_GRBM_STATUS2=0x00000003
Dec 10 16:06:54 home kernel: radeon 0000:01:00.0:   R_000E50_SRBM_STATUS=0x200080C0
Dec 10 16:06:54 home kernel: radeon 0000:01:00.0: GPU reset succeed
Dec 10 16:06:54 home kernel: radeon 0000:01:00.0: WB enabled
Dec 10 16:06:54 home kernel: [drm] ring test succeeded in 1 usecs
Dec 10 16:06:54 home kernel: [drm] ib test succeeded in 1 usecs
Dec 10 16:06:54 home kernel: [drm] Enabling audio support
Dec 10 16:07:26 home kernel: SysRq : Emergency Sync <<<< Alt+SysRq+S,
                                                    Alt+SysRq+B
                                                    pressed here
***