Hello team, the below error is printed in the log and causes the graphics driver to freeze: [Tue Aug 20 12:04:38 2019] DMAR: DRHD: handling fault status reg 2 [Tue Aug 20 12:04:38 2019] DMAR: [INTR-REMAP] Request device [00:00.0] fault index 26 [fault reason 38] Blocked an interrupt request due to source-id verification failure [Tue Aug 20 12:04:38 2019] [drm] Fence fallback timer expired on ring gfx [Tue Aug 20 12:04:38 2019] [drm] Fence fallback timer expired on ring gfx [Tue Aug 20 12:04:39 2019] [drm] Fence fallback timer expired on ring gfx [Tue Aug 20 12:04:39 2019] [drm] Fence fallback timer expired on ring gfx [Tue Aug 20 12:04:40 2019] [drm] Fence fallback timer expired on ring gfx [Tue Aug 20 12:04:40 2019] [drm] Fence fallback timer expired on ring sdma0 [Tue Aug 20 12:04:41 2019] [drm] Fence fallback timer expired on ring sdma0 ... Hardware is: Dell Precision Tower 5810 with Advanced Micro Devices, Inc. [AMD/ATI] Oland GL [FirePro W2100] video card. Kernel: 5.2.8 x86_64 (GNU/Gentoo Linux) Kernel Command line: BOOT_IMAGE=/kernel-genkernel-x86_64-5.2.8-gentoo root=/dev/mapper/root ro crypt_root=UUID=e11887f5-4104-4a9e-9c53-7e1d904a0b28 root_trim=no elevator=bfq scsi_mod.use_blk_mq=1 libata.allow_tpm=1 domdadm dolvm intel_iommu=on IOMMU is on, because the system acts mainly as a KVM/Libvirt host. amdgpu driver information: # dmesg | grep amd [ 14.614307] [drm] amdgpu kernel modesetting enabled. [ 14.615206] amdgpu 0000:03:00.0: remove_conflicting_pci_framebuffers: bar 0: 0xe0000000 -> 0xefffffff [ 14.615208] amdgpu 0000:03:00.0: remove_conflicting_pci_framebuffers: bar 2: 0xf7e00000 -> 0xf7e3ffff [ 14.615209] amdgpu 0000:03:00.0: vgaarb: deactivate vga console [ 14.617260] amdgpu 0000:03:00.0: kfd not supported on this ASIC [ 14.622071] amdgpu 0000:03:00.0: No more image in the PCI ROM [ 14.624585] amdgpu 0000:03:00.0: VRAM: 2048M 0x000000F400000000 - 0x000000F47FFFFFFF (2048M used) [ 14.624586] amdgpu 0000:03:00.0: GART: 1024M 0x000000FF00000000 - 0x000000FF3FFFFFFF [ 14.626166] [drm] amdgpu: 2048M of VRAM memory ready [ 14.626169] [drm] amdgpu: 3072M of GTT memory ready. [ 14.626832] amdgpu 0000:03:00.0: PCIE GART of 1024M enabled (table at 0x000000F400900000). [ 14.643922] [drm] amdgpu: dpm initialized [ 14.862039] fbcon: amdgpudrmfb (fb0) is primary device [ 14.990216] amdgpu 0000:03:00.0: fb0: amdgpudrmfb frame buffer device [ 15.260648] [drm] Initialized amdgpu 3.32.0 20150101 for 0000:03:00.0 on minor 0 and module dependencies: # lsmod | grep amdgpu amdgpu 3772416 7 gpu_sched 36864 1 amdgpu ttm 114688 1 amdgpu drm_kms_helper 212992 1 amdgpu drm 462848 7 gpu_sched,drm_kms_helper,amdgpu,ttm i2c_algo_bit 16384 2 igb,amdgpu Happy to collect output from 'drm.debug=0x1e log_buf_len=4M' booted kernel if that makes sense. Thanks, -Nikolay
Not much seems to have been captured by running the kernel with: 'drm.debug=0x1e log_buf_len=4M' ...snip... Aug 25 19:03:44 localhost kernel: [283823.907593][T15386] [drm:amdgpu_display_flip_work_func [amdgpu]] crtc:1[00000000c905a8f5], pflip_stat:AMDGPU_FLIP_SUBMITTED, work: 00000000c841325d, Aug 25 19:03:44 localhost kernel: [283823.922605][ T8596] [drm:amdgpu_display_crtc_page_flip_target [amdgpu]] crtc:0[00000000cc62eb17], pflip_stat:AMDGPU_FLIP_PENDING, work: 0000000019340169, Aug 25 19:03:44 localhost kernel: [283823.922640][ T8596] [drm:amdgpu_display_crtc_page_flip_target [amdgpu]] crtc:1[00000000c905a8f5], pflip_stat:AMDGPU_FLIP_PENDING, work: 00000000b4d9949b, Aug 25 19:03:44 localhost kernel: [283823.924283][T15386] [drm:amdgpu_display_flip_work_func [amdgpu]] crtc:0[00000000cc62eb17], pflip_stat:AMDGPU_FLIP_SUBMITTED, work: 0000000019340169, Aug 25 19:03:44 localhost kernel: [283823.924316][T15386] [drm:amdgpu_display_flip_work_func [amdgpu]] crtc:1[00000000c905a8f5], pflip_stat:AMDGPU_FLIP_SUBMITTED, work: 00000000b4d9949b, Aug 25 19:03:44 localhost kernel: [283823.939256][ T8596] [drm:amdgpu_display_crtc_page_flip_target [amdgpu]] crtc:0[00000000cc62eb17], pflip_stat:AMDGPU_FLIP_PENDING, work: 00000000a8e63b00, Aug 25 19:03:44 localhost kernel: [283823.939292][ T8596] [drm:amdgpu_display_crtc_page_flip_target [amdgpu]] crtc:1[00000000c905a8f5], pflip_stat:AMDGPU_FLIP_PENDING, work: 00000000b1a1f198, Aug 25 19:03:44 localhost kernel: [283823.940944][T15386] [drm:amdgpu_display_flip_work_func [amdgpu]] crtc:0[00000000cc62eb17], pflip_stat:AMDGPU_FLIP_SUBMITTED, work: 00000000a8e63b00, Aug 25 19:03:44 localhost kernel: [283823.940975][T15386] [drm:amdgpu_display_flip_work_func [amdgpu]] crtc:1[00000000c905a8f5], pflip_stat:AMDGPU_FLIP_SUBMITTED, work: 00000000b1a1f198, Aug 25 19:03:44 localhost kernel: [283823.955946][ T8596] [drm:amdgpu_display_crtc_page_flip_target [amdgpu]] crtc:0[00000000cc62eb17], pflip_stat:AMDGPU_FLIP_PENDING, work: 00000000614cee44, Aug 25 19:03:44 localhost kernel: [283823.955982][ T8596] [drm:amdgpu_display_crtc_page_flip_target [amdgpu]] crtc:1[00000000c905a8f5], pflip_stat:AMDGPU_FLIP_PENDING, work: 00000000df74fb67, Aug 25 19:03:44 localhost kernel: [283823.957643][T15386] [drm:amdgpu_display_flip_work_func [amdgpu]] crtc:0[00000000cc62eb17], pflip_stat:AMDGPU_FLIP_SUBMITTED, work: 00000000614cee44, Aug 25 19:03:44 localhost kernel: [283823.957673][T15386] [drm:amdgpu_display_flip_work_func [amdgpu]] crtc:1[00000000c905a8f5], pflip_stat:AMDGPU_FLIP_SUBMITTED, work: 00000000df74fb67, Aug 25 19:03:45 localhost kernel: [283824.053148][ C0] DMAR: DRHD: handling fault status reg 2 Aug 25 19:03:45 localhost kernel: [283824.053153][ C0] DMAR: [INTR-REMAP] Request device [00:00.0] fault index 26 [fault reason 38] Blocked an interrupt request due to source-id verification failure ...end...
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