The logs are filed with "ring stalled" and GPU lock messages. I can send more logs if needed.
radeon 0000:02:00.0: ring 3 stalled for more than 10249msec
radeon 0000:02:00.0: GPU lockup (current fence id 0x000000000001e5f1 last fence id 0x000000000001e5f2 on ring 3)
Same problem here on a fedora 23
GPU: HD 7970
CPU: Intel Core i7 950
Mesa 11.1.0
DRM 2.43.0
LLVM 3.7.0
kernel: 4.3.4
The logs are filed with "ring stalled" and GPU lock messages. I can send more logs if needed.
radeon 0000:02:00.0: ring 3 stalled for more than 10249msec
radeon 0000:02:00.0: GPU lockup (current fence id 0x000000000001e5f1 last fence id 0x000000000001e5f2 on ring 3)
I've tried a different firmware (http:// people. freedesktop. org/~agd5f/ radeon_ ucode/k/) which seemed to have helped other people with their own problem but it didn't help in my case.
Does it makes sense to try to rollback to an older kernel?