Comment # 3
on bug 64867
from Alex Deucher
(In reply to comment #2) > I too get system hangs when watching a flash video in firefox. linux-3.8.13, > libdrm, mesa etc. git. Screen simply becomes black (no signal) and machine > is dead, leaving a hard reset as the only option. The dmesg is flooded with > the following lines: > > radeon 0000:01:00.0: GPU fault detected: 147 0x0d859002 > radeon 0000:01:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x000012D8 > radeon 0000:01:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x05090002 > [...] repeated a hundred times with only the first line changing a bit [...] Something in the mesa drivers is emitting a command buffer without a proper virtual address for CB5.
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