Here is the tail of dmesg after such an error.
Best regards Tom Guder
[ 1104.412089] radeon 0000:02:00.0: ring 0 stalled for more than 10104msec [ 1104.412098] radeon 0000:02:00.0: GPU lockup (waiting for 0x00000000000664a0 last fence id 0x000000000006649f on ring 0) [ 1104.412102] radeon 0000:02:00.0: failed to get a new IB (-35) [ 1104.900461] radeon 0000:02:00.0: Saved 21357 dwords of commands on ring 0. [ 1104.900590] radeon 0000:02:00.0: GPU softreset: 0x0000006C [ 1104.900592] radeon 0000:02:00.0: GRBM_STATUS = 0xA0003028 [ 1104.900593] radeon 0000:02:00.0: GRBM_STATUS_SE0 = 0x00000006 [ 1104.900594] radeon 0000:02:00.0: GRBM_STATUS_SE1 = 0x00000006 [ 1104.900595] radeon 0000:02:00.0: SRBM_STATUS = 0x200000C0 [ 1104.900706] radeon 0000:02:00.0: SRBM_STATUS2 = 0x00000000 [ 1104.900707] radeon 0000:02:00.0: R_008674_CP_STALLED_STAT1 = 0x00000000 [ 1104.900708] radeon 0000:02:00.0: R_008678_CP_STALLED_STAT2 = 0x00010000 [ 1104.900710] radeon 0000:02:00.0: R_00867C_CP_BUSY_STAT = 0x00000002 [ 1104.900711] radeon 0000:02:00.0: R_008680_CP_STAT = 0x80010243 [ 1104.900713] radeon 0000:02:00.0: R_00D034_DMA_STATUS_REG = 0x44C83146 [ 1104.900714] radeon 0000:02:00.0: R_00D834_DMA_STATUS_REG = 0x44C84246 [ 1104.900716] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000 [ 1104.900718] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x00000000 [ 1105.370049] radeon 0000:02:00.0: GRBM_SOFT_RESET=0x0000DDFF [ 1105.370101] radeon 0000:02:00.0: SRBM_SOFT_RESET=0x00100140 [ 1105.371247] radeon 0000:02:00.0: GRBM_STATUS = 0x00003028 [ 1105.371248] radeon 0000:02:00.0: GRBM_STATUS_SE0 = 0x00000006 [ 1105.371249] radeon 0000:02:00.0: GRBM_STATUS_SE1 = 0x00000006 [ 1105.371250] radeon 0000:02:00.0: SRBM_STATUS = 0x200000C0 [ 1105.371361] radeon 0000:02:00.0: SRBM_STATUS2 = 0x00000000 [ 1105.371362] radeon 0000:02:00.0: R_008674_CP_STALLED_STAT1 = 0x00000000 [ 1105.371363] radeon 0000:02:00.0: R_008678_CP_STALLED_STAT2 = 0x00000000 [ 1105.371365] radeon 0000:02:00.0: R_00867C_CP_BUSY_STAT = 0x00000000 [ 1105.371366] radeon 0000:02:00.0: R_008680_CP_STAT = 0x00000000 [ 1105.371367] radeon 0000:02:00.0: R_00D034_DMA_STATUS_REG = 0x44C83D57 [ 1105.371369] radeon 0000:02:00.0: R_00D834_DMA_STATUS_REG = 0x44C83D57 [ 1105.371608] radeon 0000:02:00.0: GPU reset succeeded, trying to resume [ 1105.402616] [drm] probing gen 2 caps for device 8086:e04 = 7a7903/e [ 1105.402619] [drm] PCIE gen 3 link speeds already enabled [ 1105.404456] [drm] PCIE GART of 1024M enabled (table at 0x0000000000276000). [ 1105.404557] radeon 0000:02:00.0: WB enabled [ 1105.404559] radeon 0000:02:00.0: fence driver on ring 0 use gpu addr 0x0000000080000c00 and cpu addr 0xffff8800b54c0c00 [ 1105.404560] radeon 0000:02:00.0: fence driver on ring 1 use gpu addr 0x0000000080000c04 and cpu addr 0xffff8800b54c0c04 [ 1105.404561] radeon 0000:02:00.0: fence driver on ring 2 use gpu addr 0x0000000080000c08 and cpu addr 0xffff8800b54c0c08 [ 1105.404561] radeon 0000:02:00.0: fence driver on ring 3 use gpu addr 0x0000000080000c0c and cpu addr 0xffff8800b54c0c0c [ 1105.404562] radeon 0000:02:00.0: fence driver on ring 4 use gpu addr 0x0000000080000c10 and cpu addr 0xffff8800b54c0c10 [ 1105.405169] radeon 0000:02:00.0: fence driver on ring 5 use gpu addr 0x0000000000075a18 and cpu addr 0xffffc90011fb5a18 [ 1105.564971] [drm] ring test on 0 succeeded in 2 usecs [ 1105.564978] [drm] ring test on 1 succeeded in 1 usecs [ 1105.564984] [drm] ring test on 2 succeeded in 1 usecs [ 1105.564995] [drm] ring test on 3 succeeded in 5 usecs [ 1105.565005] [drm] ring test on 4 succeeded in 5 usecs [ 1105.740770] [drm] ring test on 5 succeeded in 2 usecs [ 1105.740776] [drm] UVD initialized successfully. [ 1115.740176] radeon 0000:02:00.0: ring 0 stalled for more than 10000msec [ 1115.740183] radeon 0000:02:00.0: GPU lockup (waiting for 0x00000000000665a7 last fence id 0x000000000006649f on ring 0) [ 1115.740187] [drm:r600_ib_test] *ERROR* radeon: fence wait failed (-35). [ 1115.740192] [drm:radeon_ib_ring_tests] *ERROR* radeon: failed testing IB on GFX ring (-35). [ 1115.740195] radeon 0000:02:00.0: ib ring test failed (-35). [ 1116.221093] radeon 0000:02:00.0: GPU softreset: 0x00000048 [ 1116.221095] radeon 0000:02:00.0: GRBM_STATUS = 0xA0003028 [ 1116.221097] radeon 0000:02:00.0: GRBM_STATUS_SE0 = 0x00000006 [ 1116.221098] radeon 0000:02:00.0: GRBM_STATUS_SE1 = 0x00000006 [ 1116.221099] radeon 0000:02:00.0: SRBM_STATUS = 0x200000C0 [ 1116.221210] radeon 0000:02:00.0: SRBM_STATUS2 = 0x00000000 [ 1116.221211] radeon 0000:02:00.0: R_008674_CP_STALLED_STAT1 = 0x00000000 [ 1116.221212] radeon 0000:02:00.0: R_008678_CP_STALLED_STAT2 = 0x00010000 [ 1116.221214] radeon 0000:02:00.0: R_00867C_CP_BUSY_STAT = 0x00000002 [ 1116.221215] radeon 0000:02:00.0: R_008680_CP_STAT = 0x80010243 [ 1116.221217] radeon 0000:02:00.0: R_00D034_DMA_STATUS_REG = 0x44C83D57 [ 1116.221218] radeon 0000:02:00.0: R_00D834_DMA_STATUS_REG = 0x44C83D57 [ 1116.221220] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000 [ 1116.221221] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x00000000 [ 1116.687136] radeon 0000:02:00.0: GRBM_SOFT_RESET=0x0000DDFF [ 1116.687189] radeon 0000:02:00.0: SRBM_SOFT_RESET=0x00000100 [ 1116.688336] radeon 0000:02:00.0: GRBM_STATUS = 0x00003028 [ 1116.688338] radeon 0000:02:00.0: GRBM_STATUS_SE0 = 0x00000006 [ 1116.688339] radeon 0000:02:00.0: GRBM_STATUS_SE1 = 0x00000006 [ 1116.688340] radeon 0000:02:00.0: SRBM_STATUS = 0x200000C0 [ 1116.688451] radeon 0000:02:00.0: SRBM_STATUS2 = 0x00000000 [ 1116.688452] radeon 0000:02:00.0: R_008674_CP_STALLED_STAT1 = 0x00000000 [ 1116.688453] radeon 0000:02:00.0: R_008678_CP_STALLED_STAT2 = 0x00000000 [ 1116.688455] radeon 0000:02:00.0: R_00867C_CP_BUSY_STAT = 0x00000000 [ 1116.688456] radeon 0000:02:00.0: R_008680_CP_STAT = 0x00000000 [ 1116.688457] radeon 0000:02:00.0: R_00D034_DMA_STATUS_REG = 0x44C83D57 [ 1116.688459] radeon 0000:02:00.0: R_00D834_DMA_STATUS_REG = 0x44C83D57 [ 1116.688698] radeon 0000:02:00.0: GPU reset succeeded, trying to resume [ 1116.704715] [drm] probing gen 2 caps for device 8086:e04 = 7a7903/e [ 1116.704718] [drm] PCIE gen 3 link speeds already enabled [ 1116.706706] [drm] PCIE GART of 1024M enabled (table at 0x0000000000276000). [ 1116.706804] radeon 0000:02:00.0: WB enabled [ 1116.706806] radeon 0000:02:00.0: fence driver on ring 0 use gpu addr 0x0000000080000c00 and cpu addr 0xffff8800b54c0c00 [ 1116.706807] radeon 0000:02:00.0: fence driver on ring 1 use gpu addr 0x0000000080000c04 and cpu addr 0xffff8800b54c0c04 [ 1116.706808] radeon 0000:02:00.0: fence driver on ring 2 use gpu addr 0x0000000080000c08 and cpu addr 0xffff8800b54c0c08 [ 1116.706809] radeon 0000:02:00.0: fence driver on ring 3 use gpu addr 0x0000000080000c0c and cpu addr 0xffff8800b54c0c0c [ 1116.706809] radeon 0000:02:00.0: fence driver on ring 4 use gpu addr 0x0000000080000c10 and cpu addr 0xffff8800b54c0c10 [ 1116.707415] radeon 0000:02:00.0: fence driver on ring 5 use gpu addr 0x0000000000075a18 and cpu addr 0xffffc90011fb5a18 [ 1116.866682] [drm] ring test on 0 succeeded in 4 usecs [ 1116.866686] [drm] ring test on 1 succeeded in 1 usecs [ 1116.866689] [drm] ring test on 2 succeeded in 1 usecs [ 1116.866697] [drm] ring test on 3 succeeded in 5 usecs [ 1116.866705] [drm] ring test on 4 succeeded in 5 usecs [ 1117.042382] [drm] ring test on 5 succeeded in 2 usecs [ 1117.042387] [drm] UVD initialized successfully. [ 1117.042445] [drm] ib test on ring 0 succeeded in 0 usecs [ 1117.042493] [drm] ib test on ring 1 succeeded in 0 usecs [ 1117.042538] [drm] ib test on ring 2 succeeded in 0 usecs [ 1117.042560] [drm] ib test on ring 3 succeeded in 0 usecs [ 1117.042581] [drm] ib test on ring 4 succeeded in 0 usecs [ 1127.192051] radeon 0000:02:00.0: ring 5 stalled for more than 10000msec [ 1127.192073] radeon 0000:02:00.0: GPU lockup (waiting for 0x0000000000000004 last fence id 0x0000000000000002 on ring 5) [ 1127.192077] [drm:uvd_v1_0_ib_test] *ERROR* radeon: fence wait failed (-35). [ 1127.192084] [drm:radeon_ib_ring_tests] *ERROR* radeon: failed testing IB on ring 5 (-35). [ 1127.218610] radeon 0000:02:00.0: GPU fault detected: 146 0x08c28404 [ 1127.218615] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00004E46 [ 1127.218618] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x02084004 [ 1127.218621] VM fault (0x04, vmid 1) at page 20038, read from TC (132) [ 1127.256142] radeon 0000:02:00.0: GPU fault detected: 146 0x0763a004 [ 1127.256148] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD3B [ 1127.256150] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x030A0004 [ 1127.256153] VM fault (0x04, vmid 1) at page 44347, write from CB (160) [ 1127.256219] radeon 0000:02:00.0: GPU fault detected: 146 0x07831004 [ 1127.256221] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000 [ 1127.256222] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x03060004 [ 1127.256224] VM fault (0x04, vmid 1) at page 0, write from CB (96) [ 1127.256228] radeon 0000:02:00.0: GPU fault detected: 146 0x04c35004 [ 1127.256230] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD19 [ 1127.256232] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x03090004 [ 1127.256233] VM fault (0x04, vmid 1) at page 44313, write from CB (144) [ 1127.256615] radeon 0000:02:00.0: GPU fault detected: 146 0x0243a004 [ 1127.256617] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000 [ 1127.256619] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x03060004 [ 1127.256620] VM fault (0x04, vmid 1) at page 0, write from CB (96) [ 1127.256624] radeon 0000:02:00.0: GPU fault detected: 146 0x04a39004 [ 1127.256626] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD09 [ 1127.256628] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x03050004 [ 1127.256629] VM fault (0x04, vmid 1) at page 44297, write from CB (80) [ 1127.256764] radeon 0000:02:00.0: GPU fault detected: 146 0x02235004 [ 1127.256766] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000 [ 1127.256767] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x02090004 [ 1127.256769] VM fault (0x04, vmid 1) at page 0, read from CB (144) [ 1127.257085] radeon 0000:02:00.0: GPU fault detected: 146 0x0fe31004 [ 1127.257088] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000ACFF [ 1127.257089] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x03010004 [ 1127.257091] VM fault (0x04, vmid 1) at page 44287, write from CB (16) [ 1127.257501] radeon 0000:02:00.0: GPU fault detected: 146 0x00e3a004 [ 1127.257506] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD07 [ 1127.257508] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x030A0004 [ 1127.257510] VM fault (0x04, vmid 1) at page 44295, write from CB (160) [ 1127.257655] radeon 0000:02:00.0: GPU fault detected: 146 0x0f622004 [ 1127.257657] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000ACFB [ 1127.257659] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x02020004 [ 1127.257661] VM fault (0x04, vmid 1) at page 44283, read from CB (32) [ 1127.257756] radeon 0000:02:00.0: GPU fault detected: 146 0x02c3e004 [ 1127.257758] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x00000000 [ 1127.257760] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x02010004 [ 1127.257762] VM fault (0x04, vmid 1) at page 0, read from CB (16) [ 1127.257765] radeon 0000:02:00.0: GPU fault detected: 146 0x02436004 [ 1127.257767] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD3B [ 1127.257769] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x03020004 [ 1127.257770] VM fault (0x04, vmid 1) at page 44347, write from CB (32) [ 1127.257912] radeon 0000:02:00.0: GPU fault detected: 146 0x07e21004 [ 1127.257914] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD1E [ 1127.257916] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x020A0004 [ 1127.257917] VM fault (0x04, vmid 1) at page 44318, read from CB (160) [ 1127.258056] radeon 0000:02:00.0: GPU fault detected: 146 0x04c25004 [ 1127.258059] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD26 [ 1127.258060] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x02050004 [ 1127.258062] VM fault (0x04, vmid 1) at page 44326, read from CB (80) [ 1127.258244] radeon 0000:02:00.0: GPU fault detected: 146 0x03225004 [ 1127.258246] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD19 [ 1127.258248] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x02050004 [ 1127.258250] VM fault (0x04, vmid 1) at page 44313, read from CB (80) [ 1127.258253] radeon 0000:02:00.0: GPU fault detected: 146 0x04c25004 [ 1127.258257] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD19 [ 1127.258259] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x03020004 [ 1127.258260] VM fault (0x04, vmid 1) at page 44313, write from CB (32) [ 1127.258362] radeon 0000:02:00.0: GPU fault detected: 146 0x04229004 [ 1127.258364] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD21 [ 1127.258366] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x02090004 [ 1127.258368] VM fault (0x04, vmid 1) at page 44321, read from CB (144) [ 1127.258476] radeon 0000:02:00.0: GPU fault detected: 146 0x03225004 [ 1127.258478] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD19 [ 1127.258480] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x02050004 [ 1127.258481] VM fault (0x04, vmid 1) at page 44313, read from CB (80) [ 1127.258591] radeon 0000:02:00.0: GPU fault detected: 146 0x0422e004 [ 1127.258593] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD21 [ 1127.258594] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x020E0004 [ 1127.258596] VM fault (0x04, vmid 1) at page 44321, read from CB (224) [ 1127.258725] radeon 0000:02:00.0: GPU fault detected: 146 0x04229004 [ 1127.258727] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD21 [ 1127.258729] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x02090004 [ 1127.258731] VM fault (0x04, vmid 1) at page 44321, read from CB (144) [ 1127.259582] radeon 0000:02:00.0: GPU fault detected: 146 0x0762c804 [ 1127.259586] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_ADDR 0x0000AD3B [ 1127.259589] radeon 0000:02:00.0: VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x020C8004 [ 1127.259591] VM fault (0x04, vmid 1) at page 44347, read from TC (200)
