Comment # 9 on bug 79862 from nucrap@hotmail.com

Appears the bug is independent of UVD enabled or not.
At least with UVD enabled I have got an additional error in dmseg:

[  236.334117] radeon 0000:0b:00.0: GPU fault detected: 146 0x0ee6480c
[  236.334121] radeon 0000:0b:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR  
0x000010F7
[  236.334123] radeon 0000:0b:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS
0x0604800C
[  236.334126] VM fault (0x0c, vmid 3) at page 4343, read from 'TC2'
(0x54433200) (72)