Created attachment 115406 [details]
dmesg

00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Wimbledon XT [Radeon HD 7970M] (rev ff)

mesa git, llvm recent revision, with PRIME.
linux 4.1rc1, but with 4.0 it was the same.

Counter Strike GO seems to be problematic anyway. Even with 1366x768 and
settings on low I get bad performance drops, see video:
https://www.youtube.com/watch?v=HVDZowUGlSc There is flickering all over the
place. At the end of the video there is one of the GPU hangs:


perf interrupt took too long (4996 > 4960), lowering
kernel.perf_event_max_sample_rate to 25200
radeon 0000:01:00.0: GPU fault detected: 146 0x08e2c804
radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x0000EBC7           
radeon 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x020C8004           
VM fault (0x04, vmid 1) at page 60359, read from TC (200)
radeon 0000:01:00.0: ring 0 stalled for more than 10490msec
radeon 0000:01:00.0: GPU lockup (current fence id 0x00000000008a0d3c last fence
id 0x00000000008a0d57 on ring 0)
radeon 0000:01:00.0: ring 0 stalled for more than 10990msec
radeon 0000:01:00.0: GPU lockup (current fence id 0x00000000008a0d3c last fence
id 0x00000000008a0d57 on ring 0)
radeon 0000:01:00.0: ring 0 stalled for more than 11490msec
radeon 0000:01:00.0: GPU lockup (current fence id 0x00000000008a0d3c last fence
id 0x00000000008a0d57 on ring 0)

and then only further stalled messages

It happens after 15-60 minutes or something like that.