It looks like comment #3 had been truncated, the interesting part of the dmesg log that is missing is:
``` [ 66.755306] radeon 0000:01:00.0: ring 0 stalled for more than 31248msec [ 66.755317] radeon 0000:01:00.0: GPU lockup (current fence id 0x0000000000000001 last fence id 0x0000000000000002 on ring 0) [ 66.840372] radeon 0000:01:00.0: Saved 25 dwords of commands on ring 0. [ 66.840402] radeon 0000:01:00.0: GPU softreset: 0x00000019 [ 66.840408] radeon 0000:01:00.0: R_008010_GRBM_STATUS = 0xA27034A1 [ 66.840414] radeon 0000:01:00.0: R_008014_GRBM_STATUS2 = 0x00000102 [ 66.840419] radeon 0000:01:00.0: R_000E50_SRBM_STATUS = 0x200028C0 [ 66.840424] radeon 0000:01:00.0: R_008674_CP_STALLED_STAT1 = 0x04000000 [ 66.840429] radeon 0000:01:00.0: R_008678_CP_STALLED_STAT2 = 0x00010100 [ 66.840434] radeon 0000:01:00.0: R_00867C_CP_BUSY_STAT = 0x00008C80 [ 66.840438] radeon 0000:01:00.0: R_008680_CP_STAT = 0x808182E7 [ 66.840443] radeon 0000:01:00.0: R_00D034_DMA_STATUS_REG = 0x44C83D57 [ 67.364934] radeon 0000:01:00.0: Wait for MC idle timedout ! [ 67.364940] radeon 0000:01:00.0: R_008020_GRBM_SOFT_RESET=0x00007F6B [ 67.365005] radeon 0000:01:00.0: SRBM_SOFT_RESET=0x00000100 [ 67.367106] radeon 0000:01:00.0: R_008010_GRBM_STATUS = 0x00003028 [ 67.367110] radeon 0000:01:00.0: R_008014_GRBM_STATUS2 = 0x00000002 [ 67.367114] radeon 0000:01:00.0: R_000E50_SRBM_STATUS = 0x200028C0 [ 67.367118] radeon 0000:01:00.0: R_008674_CP_STALLED_STAT1 = 0x00000000 [ 67.367122] radeon 0000:01:00.0: R_008678_CP_STALLED_STAT2 = 0x00000000 [ 67.367126] radeon 0000:01:00.0: R_00867C_CP_BUSY_STAT = 0x00000000 [ 67.367130] radeon 0000:01:00.0: R_008680_CP_STAT = 0x00000000 [ 67.367134] radeon 0000:01:00.0: R_00D034_DMA_STATUS_REG = 0x44C83D57 [ 67.367152] radeon 0000:01:00.0: GPU reset succeeded, trying to resume [ 67.842179] radeon 0000:01:00.0: Wait for MC idle timedout ! [ 68.068765] radeon 0000:01:00.0: Wait for MC idle timedout ! [ 68.082273] [drm] PCIE GART of 1024M enabled (table at 0x000000000014C000). [ 68.082448] radeon 0000:01:00.0: WB enabled [ 68.082454] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 [ 68.082459] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c [ 68.088977] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 0x000000000005c598 [ 68.374095] [drm:r600_ring_test [radeon]] *ERROR* radeon: ring 0 test failed (scratch(0x8504)=0xCAFEDEAD) [ 68.374176] [drm:rv770_resume [radeon]] *ERROR* r600 startup failed on resume ``` This is what happens when applying the patch to force 32-bit DMA bit mask on PCI devices. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1902981 Title: AGP GPU on PCI mode (when AGP is disabled at kernel build time) known to fail on K8 and K10 platforms To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1902981/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
