Created attachment 28679 [details] dmesg captured from terminal using ssh. I was running modified version of mesa when I got GPU hang. (My changes may have broken state) But effects of gpu hang were fatal: -dmesg has message that radeon was trying to reset GPU -ring test failed so reset failed -dmesg is spammed with messages that scheduling IB failed -whole computer is unresponsive localy -open ssh connection works for only few commands (luckily dmesg did work) -It seems like no disk access can happen after hang -No new ssh connection are possible -Old ssh connection did freeze soon so not much useful info there After reboot logs didn't include any info from hang or after it. I have seen before similar hang with M9+ card but no ssh connected then so no debug info.
Created attachment 28680 [details] lspci for hardware details. software details: kernel is vanila 2.6.31-rc6 mesa master from yesterday with my patches applied+minor hacking libdrm master 1d465178fbab77a9c xf86-video-ati master cd99d9f0 PS. Afre ssh freeze I did try Sysrq+S,K,R and Then just B. Nothing did happend to first 3 but reboot worked.
Created attachment 28681 [details] dmesg from 2nd hang ok. I can reproduce this hang with my broken mesa. This time I got IB info over ssh before I lost control.
Created attachment 28682 [details] all IB buffers dumped to single file
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