On the HP Zbook I've got here with an AMD WX4150 GPU, DP MST i=
s entirely
nonfunctional. The only part of MST that works is the first modeset. Every
single modeset afterwards fails while spamming this in dmesg:
[ 77.797646] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 10u=
s *
3000 tries - dce110_stream_encoder_dp_blank line:927
[ 77.797698] WARNING: CPU: 7 PID: 55 at
drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:254
generic_reg_wait+0xe7/0x160 [amdgpu]
[ 77.797698] Modules linked in: fuse vfat fat arc4 rtsx_pci_sdmmc mmc_core
mei_wdt rtsx_pci_ms intel_rapl memstick iTCO_wdt iTCO_vendor_support hp_wmi
intel_wmi_thunderbolt wmi_bmof sparse_keymap x86_pkg_temp_thermal
intel_powerclamp coretemp iwlmvm kvm mac80211 snd_hda_codec_conexant
snd_hda_codec_generic snd_hda_codec_hdmi irqbypass crct10dif_pclmul
crc32_pclmul snd_hda_intel snd_usb_audio snd_hda_codec ghash_clmulni_intel
intel_cstate btusb snd_hda_core btrtl snd_usbmidi_lib iwlwifi intel_uncore
snd_rawmidi snd_hwdep snd_seq btbcm intel_rapl_perf btintel snd_seq_device
snd_pcm uvcvideo bluetooth cfg80211 videobuf2_vmalloc videobuf2_memops
videobuf2_v4l2 videobuf2_common joydev videodev thunderbolt snd_timer snd m=
edia
mei_me ecdh_generic i2c_i801 rtsx_pci rfkill mei soundcore intel_pch_thermal
wmi
[ 77.797719] acpi_pad hp_accel lis3lv02d input_polldev hp_wireless
pcc_cpufreq amdgpu i915 chash gpu_sched i2c_algo_bit drm_kms_helper tg3 ttm=
drm
serio_raw libphy e1000e crc32c_intel video
[ 77.797727] CPU: 7 PID: 55 Comm: kworker/7:0 Tainted: G W=20=20=
=20=20=20=20=20=20
4.18.8-200.fc28.x86_64 #1
[ 77.797728] Hardware name: HP HP ZBook 15 G4/8275, BIOS P70 Ver. 01.22
05/17/2018
[ 77.797738] Workqueue: events drm_mode_rmfb_work_fn [drm]
[ 77.797766] RIP: 0010:generic_reg_wait+0xe7/0x160 [amdgpu]
[ 77.797766] Code: 44 24 58 8b 54 24 48 89 de 44 89 4c 24 08 48 8b 4c 24 =
50
48 c7 c7 80 72 a3 c0 e8 64 5f b5 ff 83 7d 20 01 44 8b 4c 24 08 74 02 <0f=
> 0b 48
83 c4 10 44 89 c8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 41 0f=20
[ 77.797782] RSP: 0018:ffff9c4f81aeba10 EFLAGS: 00010297
[ 77.797783] RAX: 0000000000000000 RBX: 000000000000000a RCX:
0000000000000000
[ 77.797783] RDX: 0000000000000000 RSI: ffff8ddf2f5d6938 RDI:
ffff8ddf2f5d6938
[ 77.797784] RBP: ffff8ddf14c09b80 R08: 0000000000000005 R09:
0000000000010200
[ 77.797784] R10: 0000000000000000 R11: ffffffff969a11ed R12:
0000000000000bb9
[ 77.797785] R13: 0000000000004ea4 R14: 0000000000010000 R15:
0000000000000000
[ 77.797786] FS: 0000000000000000(0000) GS:ffff8ddf2f5c0000(0000)
knlGS:0000000000000000
[ 77.797786] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 77.797787] CR2: 00007f2ec5105020 CR3: 000000044820a003 CR4:
00000000003606e0
[ 77.797787] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 77.797788] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 77.797788] Call Trace:
[ 77.797820] dce110_stream_encoder_dp_blank+0x12c/0x1a0 [amdgpu]
[ 77.797848] core_link_disable_stream+0x54/0x220 [amdgpu]
[ 77.797875] dce110_reset_hw_ctx_wrap+0xc1/0x1e0 [amdgpu]
[ 77.797902] dce110_apply_ctx_to_hw+0x52/0xa30 [amdgpu]
[ 77.797931] ? dce_pipe_control_lock+0x1da/0x1f0 [amdgpu]
[ 77.797976] dc_commit_state+0x2e7/0x580 [amdgpu]
[ 77.798020] amdgpu_dm_atomic_commit_tail+0x37c/0xd70 [amdgpu]
[ 77.798023] ? _cond_resched+0x15/0x30
[ 77.798024] ? wait_for_completion_timeout+0x3a/0x190
[ 77.798025] ? wait_for_completion_interruptible+0x35/0x1d0
[ 77.798053] ? dm_plane_helper_cleanup_fb+0x120/0x120 [amdgpu]
[ 77.798058] commit_tail+0x3d/0x70 [drm_kms_helper]
[ 77.798062] drm_atomic_helper_commit+0x103/0x110 [drm_kms_helper]
[ 77.798069] drm_framebuffer_remove+0x2cc/0x3e0 [drm]
[ 77.798076] drm_mode_rmfb_work_fn+0x4f/0x60 [drm]
[ 77.798079] process_one_work+0x1a1/0x350
[ 77.798080] worker_thread+0x30/0x380
[ 77.798082] ? pwq_unbound_release_workfn+0xd0/0xd0
[ 77.798083] kthread+0x112/0x130
[ 77.798084] ? kthread_create_worker_on_cpu+0x70/0x70
[ 77.798086] ret_from_fork+0x35/0x40
[ 77.798087] ---[ end trace db8425ba857d73a8 ]---
[ 77.922892] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 10u=
s *
3000 tries - dce110_stream_encoder_dp_blank line:927
[ 77.922946] WARNING: CPU: 5 PID: 76 at
drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:254
generic_reg_wait+0xe7/0x160 [amdgpu]
[ 77.922947] Modules linked in: fuse vfat fat arc4 rtsx_pci_sdmmc mmc_core
mei_wdt rtsx_pci_ms intel_rapl memstick iTCO_wdt iTCO_vendor_support hp_wmi
intel_wmi_thunderbolt wmi_bmof sparse_keymap x86_pkg_temp_thermal
intel_powerclamp coretemp iwlmvm kvm mac80211 snd_hda_codec_conexant
snd_hda_codec_generic snd_hda_codec_hdmi irqbypass crct10dif_pclmul
crc32_pclmul snd_hda_intel snd_usb_audio snd_hda_codec ghash_clmulni_intel
intel_cstate btusb snd_hda_core btrtl snd_usbmidi_lib iwlwifi intel_uncore
snd_rawmidi snd_hwdep snd_seq btbcm intel_rapl_perf btintel snd_seq_device
snd_pcm uvcvideo bluetooth cfg80211 videobuf2_vmalloc videobuf2_memops
videobuf2_v4l2 videobuf2_common joydev videodev thunderbolt snd_timer snd m=
edia
mei_me ecdh_generic i2c_i801 rtsx_pci rfkill mei soundcore intel_pch_thermal
wmi
[ 77.922969] acpi_pad hp_accel lis3lv02d input_polldev hp_wireless
pcc_cpufreq amdgpu i915 chash gpu_sched i2c_algo_bit drm_kms_helper tg3 ttm=
drm
serio_raw libphy e1000e crc32c_intel video
[ 77.922977] CPU: 5 PID: 76 Comm: kworker/5:1 Tainted: G W=20=20=
=20=20=20=20=20=20
4.18.8-200.fc28.x86_64 #1
[ 77.922978] Hardware name: HP HP ZBook 15 G4/8275, BIOS P70 Ver. 01.22
05/17/2018
[ 77.922988] Workqueue: events drm_mode_rmfb_work_fn [drm]
[ 77.923016] RIP: 0010:generic_reg_wait+0xe7/0x160 [amdgpu]
[ 77.923016] Code: 44 24 58 8b 54 24 48 89 de 44 89 4c 24 08 48 8b 4c 24 =
50
48 c7 c7 80 72 a3 c0 e8 64 5f b5 ff 83 7d 20 01 44 8b 4c 24 08 74 02 <0f=
> 0b 48
83 c4 10 44 89 c8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 41 0f=20
[ 77.923033] RSP: 0018:ffff9c4f81bb3a10 EFLAGS: 00010297
[ 77.923034] RAX: 0000000000000000 RBX: 000000000000000a RCX:
0000000000000000
[ 77.923035] RDX: 0000000000000000 RSI: ffff8ddf2f556938 RDI:
ffff8ddf2f556938
[ 77.923035] RBP: ffff8ddf14c09b80 R08: 0000000000000005 R09:
0000000000010200
[ 77.923036] R10: 0000000000000000 R11: ffffffff969a11ed R12:
0000000000000bb9
[ 77.923037] R13: 0000000000004ba4 R14: 0000000000010000 R15:
0000000000000000
[ 77.923038] FS: 0000000000000000(0000) GS:ffff8ddf2f540000(0000)
knlGS:0000000000000000
[ 77.923039] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 77.923060] CR2: 00007f4b440d2398 CR3: 000000044820a004 CR4:
00000000003606e0
[ 77.923061] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 77.923061] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 77.923062] Call Trace:
[ 77.923120] dce110_stream_encoder_dp_blank+0x12c/0x1a0 [amdgpu]
[ 77.923165] core_link_disable_stream+0x54/0x220 [amdgpu]
[ 77.923224] dce110_reset_hw_ctx_wrap+0xc1/0x1e0 [amdgpu]
[ 77.923282] dce110_apply_ctx_to_hw+0x52/0xa30 [amdgpu]
[ 77.923340] ? hwmgr_handle_task+0x6b/0xc0 [amdgpu]
[ 77.923342] ? _cond_resched+0x15/0x30
[ 77.923383] ? pp_dpm_dispatch_tasks+0x41/0x60 [amdgpu]
[ 77.923410] ? amdgpu_pm_compute_clocks.part.9+0xb7/0x530 [amdgpu]
[ 77.923438] dc_commit_state+0x2e7/0x580 [amdgpu]
[ 77.923466] amdgpu_dm_atomic_commit_tail+0x37c/0xd70 [amdgpu]
[ 77.923486] ? amdgpu_bo_pin_restricted+0xd6/0x300 [amdgpu]
[ 77.923488] ? _cond_resched+0x15/0x30
[ 77.923489] ? wait_for_completion_timeout+0x3a/0x190
[ 77.923489] ? wait_for_completion_interruptible+0x35/0x1d0
[ 77.923495] commit_tail+0x3d/0x70 [drm_kms_helper]
[ 77.923499] drm_atomic_helper_commit+0x103/0x110 [drm_kms_helper]
[ 77.923506] drm_framebuffer_remove+0x2cc/0x3e0 [drm]
[ 77.923514] drm_mode_rmfb_work_fn+0x4f/0x60 [drm]
[ 77.923516] process_one_work+0x1a1/0x350
[ 77.923518] worker_thread+0x30/0x380
[ 77.923519] ? pwq_unbound_release_workfn+0xd0/0xd0
[ 77.923520] kthread+0x112/0x130
[ 77.923522] ? kthread_create_worker_on_cpu+0x70/0x70
[ 77.923523] ret_from_fork+0x35/0x40
[ 77.923542] ---[ end trace db8425ba857d73a9 ]---
[ 80.360279] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 10u=
s *
3000 tries - dce110_stream_encoder_dp_blank line:927
[ 80.360333] WARNING: CPU: 4 PID: 77 at
drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:254
generic_reg_wait+0xe7/0x160 [amdgpu]
[ 80.360334] Modules linked in: fuse vfat fat arc4 rtsx_pci_sdmmc mmc_core
mei_wdt rtsx_pci_ms intel_rapl memstick iTCO_wdt iTCO_vendor_support hp_wmi
intel_wmi_thunderbolt wmi_bmof sparse_keymap x86_pkg_temp_thermal
intel_powerclamp coretemp iwlmvm kvm mac80211 snd_hda_codec_conexant
snd_hda_codec_generic snd_hda_codec_hdmi irqbypass crct10dif_pclmul
crc32_pclmul snd_hda_intel snd_usb_audio snd_hda_codec ghash_clmulni_intel
intel_cstate btusb snd_hda_core btrtl snd_usbmidi_lib iwlwifi intel_uncore
snd_rawmidi snd_hwdep snd_seq btbcm intel_rapl_perf btintel snd_seq_device
snd_pcm uvcvideo bluetooth cfg80211 videobuf2_vmalloc videobuf2_memops
videobuf2_v4l2 videobuf2_common joydev videodev thunderbolt snd_timer snd m=
edia
mei_me ecdh_generic i2c_i801 rtsx_pci rfkill mei soundcore intel_pch_thermal
wmi
[ 80.360358] acpi_pad hp_accel lis3lv02d input_polldev hp_wireless
pcc_cpufreq amdgpu i915 chash gpu_sched i2c_algo_bit drm_kms_helper tg3 ttm=
drm
serio_raw libphy e1000e crc32c_intel video
[ 80.360367] CPU: 4 PID: 77 Comm: kworker/4:1 Tainted: G W=20=20=
=20=20=20=20=20=20
4.18.8-200.fc28.x86_64 #1
[ 80.360368] Hardware name: HP HP ZBook 15 G4/8275, BIOS P70 Ver. 01.22
05/17/2018
[ 80.360378] Workqueue: events drm_mode_rmfb_work_fn [drm]
[ 80.360408] RIP: 0010:generic_reg_wait+0xe7/0x160 [amdgpu]
[ 80.360409] Code: 44 24 58 8b 54 24 48 89 de 44 89 4c 24 08 48 8b 4c 24 =
50
48 c7 c7 80 72 a3 c0 e8 64 5f b5 ff 83 7d 20 01 44 8b 4c 24 08 74 02 <0f=
> 0b 48
83 c4 10 44 89 c8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 41 0f=20
[ 80.360427] RSP: 0018:ffff9c4f81bbba10 EFLAGS: 00010297
[ 80.360428] RAX: 0000000000000000 RBX: 000000000000000a RCX:
0000000000000000
[ 80.360429] RDX: 0000000000000000 RSI: ffff8ddf2f516938 RDI:
ffff8ddf2f516938
[ 80.360429] RBP: ffff8ddf14c09b80 R08: 0000000000000005 R09:
0000000000010200
[ 80.360430] R10: 0000000000000000 R11: ffffffff969a11ed R12:
0000000000000bb9
[ 80.360431] R13: 0000000000004ba4 R14: 0000000000010000 R15:
0000000000000000
[ 80.360432] FS: 0000000000000000(0000) GS:ffff8ddf2f500000(0000)
knlGS:0000000000000000
[ 80.360432] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 80.360433] CR2: 0000001a66fbfd03 CR3: 000000044820a004 CR4:
00000000003606e0
[ 80.360434] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 80.360434] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 80.360435] Call Trace:
[ 80.360470] dce110_stream_encoder_dp_blank+0x12c/0x1a0 [amdgpu]
[ 80.360501] core_link_disable_stream+0x54/0x220 [amdgpu]
[ 80.360531] dce110_reset_hw_ctx_wrap+0xc1/0x1e0 [amdgpu]
[ 80.360560] dce110_apply_ctx_to_hw+0x52/0xa30 [amdgpu]
[ 80.360593] ? dce_pipe_control_lock+0x1da/0x1f0 [amdgpu]
[ 80.360622] dc_commit_state+0x2e7/0x580 [amdgpu]
[ 80.360654] amdgpu_dm_atomic_commit_tail+0x37c/0xd70 [amdgpu]
[ 80.360676] ? amdgpu_bo_pin_restricted+0xd6/0x300 [amdgpu]
[ 80.360679] ? _cond_resched+0x15/0x30
[ 80.360680] ? wait_for_completion_timeout+0x3a/0x190
[ 80.360681] ? wait_for_completion_interruptible+0x35/0x1d0
[ 80.360687] commit_tail+0x3d/0x70 [drm_kms_helper]
[ 80.360691] drm_atomic_helper_commit+0x103/0x110 [drm_kms_helper]
[ 80.360700] drm_framebuffer_remove+0x2cc/0x3e0 [drm]
[ 80.360708] drm_mode_rmfb_work_fn+0x4f/0x60 [drm]
[ 80.360710] process_one_work+0x1a1/0x350
[ 80.360713] worker_thread+0x30/0x380
[ 80.360714] ? pwq_unbound_release_workfn+0xd0/0xd0
[ 80.360716] kthread+0x112/0x130
[ 80.360717] ? kthread_create_worker_on_cpu+0x70/0x70
[ 80.360719] ret_from_fork+0x35/0x40
[ 80.360720] ---[ end trace db8425ba857d73aa ]---
[ 80.436758] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 10u=
s *
3000 tries - dce110_stream_encoder_dp_blank line:927
[ 80.436795] WARNING: CPU: 5 PID: 76 at
drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:254
generic_reg_wait+0xe7/0x160 [amdgpu]
[ 80.436795] Modules linked in: fuse vfat fat arc4 rtsx_pci_sdmmc mmc_core
mei_wdt rtsx_pci_ms intel_rapl memstick iTCO_wdt iTCO_vendor_support hp_wmi
intel_wmi_thunderbolt wmi_bmof sparse_keymap x86_pkg_temp_thermal
intel_powerclamp coretemp iwlmvm kvm mac80211 snd_hda_codec_conexant
snd_hda_codec_generic snd_hda_codec_hdmi irqbypass crct10dif_pclmul
crc32_pclmul snd_hda_intel snd_usb_audio snd_hda_codec ghash_clmulni_intel
intel_cstate btusb snd_hda_core btrtl snd_usbmidi_lib iwlwifi intel_uncore
snd_rawmidi snd_hwdep snd_seq btbcm intel_rapl_perf btintel snd_seq_device
snd_pcm uvcvideo bluetooth cfg80211 videobuf2_vmalloc videobuf2_memops
videobuf2_v4l2 videobuf2_common joydev videodev thunderbolt snd_timer snd m=
edia
mei_me ecdh_generic i2c_i801 rtsx_pci rfkill mei soundcore intel_pch_thermal
wmi
[ 80.436811] acpi_pad hp_accel lis3lv02d input_polldev hp_wireless
pcc_cpufreq amdgpu i915 chash gpu_sched i2c_algo_bit drm_kms_helper tg3 ttm=
drm
serio_raw libphy e1000e crc32c_intel video
[ 80.436817] CPU: 5 PID: 76 Comm: kworker/5:1 Tainted: G W=20=20=
=20=20=20=20=20=20
4.18.8-200.fc28.x86_64 #1
[ 80.436818] Hardware name: HP HP ZBook 15 G4/8275, BIOS P70 Ver. 01.22
05/17/2018
[ 80.436825] Workqueue: events drm_mode_rmfb_work_fn [drm]
[ 80.436850] RIP: 0010:generic_reg_wait+0xe7/0x160 [amdgpu]
[ 80.436850] Code: 44 24 58 8b 54 24 48 89 de 44 89 4c 24 08 48 8b 4c 24 =
50
48 c7 c7 80 72 a3 c0 e8 64 5f b5 ff 83 7d 20 01 44 8b 4c 24 08 74 02 <0f=
> 0b 48
83 c4 10 44 89 c8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 41 0f=20
[ 80.436866] RSP: 0018:ffff9c4f81bb3a10 EFLAGS: 00010297
[ 80.436867] RAX: 0000000000000000 RBX: 000000000000000a RCX:
0000000000000000
[ 80.436868] RDX: 0000000000000000 RSI: ffff8ddf2f556938 RDI:
ffff8ddf2f556938
[ 80.436868] RBP: ffff8ddf14c09b80 R08: 0000000000000005 R09:
0000000000010200
[ 80.436869] R10: 0000000000000000 R11: ffffffff969a11ed R12:
0000000000000bb9
[ 80.436869] R13: 0000000000004ea4 R14: 0000000000010000 R15:
0000000000000000
[ 80.436870] FS: 0000000000000000(0000) GS:ffff8ddf2f540000(0000)
knlGS:0000000000000000
[ 80.436871] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 80.436871] CR2: 00007f3ffb9f7070 CR3: 000000044820a001 CR4:
00000000003606e0
[ 80.436872] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 80.436872] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 80.436873] Call Trace:
[ 80.436902] dce110_stream_encoder_dp_blank+0x12c/0x1a0 [amdgpu]
[ 80.436928] core_link_disable_stream+0x54/0x220 [amdgpu]
[ 80.436953] dce110_reset_hw_ctx_wrap+0xc1/0x1e0 [amdgpu]
[ 80.436996] dce110_apply_ctx_to_hw+0x52/0xa30 [amdgpu]
[ 80.437034] ? hwmgr_handle_task+0x6b/0xc0 [amdgpu]
[ 80.437036] ? _cond_resched+0x15/0x30
[ 80.437063] ? pp_dpm_dispatch_tasks+0x41/0x60 [amdgpu]
[ 80.437083] ? amdgpu_pm_compute_clocks.part.9+0xb7/0x530 [amdgpu]
[ 80.437107] dc_commit_state+0x2e7/0x580 [amdgpu]
[ 80.437135] amdgpu_dm_atomic_commit_tail+0x37c/0xd70 [amdgpu]
[ 80.437137] ? _cond_resched+0x15/0x30
[ 80.437137] ? wait_for_completion_timeout+0x3a/0x190
[ 80.437138] ? wait_for_completion_interruptible+0x35/0x1d0
[ 80.437139] ? _cond_resched+0x15/0x30
[ 80.437166] ? dm_plane_helper_cleanup_fb+0x120/0x120 [amdgpu]
[ 80.437170] commit_tail+0x3d/0x70 [drm_kms_helper]
[ 80.437173] drm_atomic_helper_commit+0x103/0x110 [drm_kms_helper]
[ 80.437180] drm_framebuffer_remove+0x2cc/0x3e0 [drm]
[ 80.437187] drm_mode_rmfb_work_fn+0x4f/0x60 [drm]
[ 80.437189] process_one_work+0x1a1/0x350
[ 80.437190] worker_thread+0x1c9/0x380
[ 80.437192] ? pwq_unbound_release_workfn+0xd0/0xd0
[ 80.437193] kthread+0x112/0x130
[ 80.437194] ? kthread_create_worker_on_cpu+0x70/0x70
[ 80.437195] ret_from_fork+0x35/0x40
[ 80.437196] ---[ end trace db8425ba857d73ab ]---
[ 84.562602] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 10u=
s *
3000 tries - dce110_stream_encoder_dp_blank line:927
[ 84.562653] WARNING: CPU: 6 PID: 155 at
drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:254
generic_reg_wait+0xe7/0x160 [amdgpu]
[ 84.562654] Modules linked in: fuse vfat fat arc4 rtsx_pci_sdmmc mmc_core
mei_wdt rtsx_pci_ms intel_rapl memstick iTCO_wdt iTCO_vendor_support hp_wmi
intel_wmi_thunderbolt wmi_bmof sparse_keymap x86_pkg_temp_thermal
intel_powerclamp coretemp iwlmvm kvm mac80211 snd_hda_codec_conexant
snd_hda_codec_generic snd_hda_codec_hdmi irqbypass crct10dif_pclmul
crc32_pclmul snd_hda_intel snd_usb_audio snd_hda_codec ghash_clmulni_intel
intel_cstate btusb snd_hda_core btrtl snd_usbmidi_lib iwlwifi intel_uncore
snd_rawmidi snd_hwdep snd_seq btbcm intel_rapl_perf btintel snd_seq_device
snd_pcm uvcvideo bluetooth cfg80211 videobuf2_vmalloc videobuf2_memops
videobuf2_v4l2 videobuf2_common joydev videodev thunderbolt snd_timer snd m=
edia
mei_me ecdh_generic i2c_i801 rtsx_pci rfkill mei soundcore intel_pch_thermal
wmi
[ 84.562675] acpi_pad hp_accel lis3lv02d input_polldev hp_wireless
pcc_cpufreq amdgpu i915 chash gpu_sched i2c_algo_bit drm_kms_helper tg3 ttm=
drm
serio_raw libphy e1000e crc32c_intel video
[ 84.562683] CPU: 6 PID: 155 Comm: kworker/6:2 Tainted: G W=20=20=
=20=20=20=20=20=20
4.18.8-200.fc28.x86_64 #1
[ 84.562683] Hardware name: HP HP ZBook 15 G4/8275, BIOS P70 Ver. 01.22
05/17/2018
[ 84.562693] Workqueue: events drm_mode_rmfb_work_fn [drm]
[ 84.562718] RIP: 0010:generic_reg_wait+0xe7/0x160 [amdgpu]
[ 84.562719] Code: 44 24 58 8b 54 24 48 89 de 44 89 4c 24 08 48 8b 4c 24 =
50
48 c7 c7 80 72 a3 c0 e8 64 5f b5 ff 83 7d 20 01 44 8b 4c 24 08 74 02 <0f=
> 0b 48
83 c4 10 44 89 c8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 41 0f=20
[ 84.562734] RSP: 0018:ffff9c4f81ecfa10 EFLAGS: 00010297
[ 84.562735] RAX: 0000000000000000 RBX: 000000000000000a RCX:
0000000000000000
[ 84.562736] RDX: 0000000000000000 RSI: ffff8ddf2f596938 RDI:
ffff8ddf2f596938
[ 84.562736] RBP: ffff8ddf14c09b80 R08: 0000000000000005 R09:
0000000000010200
[ 84.562737] R10: 0000000000000000 R11: ffffffff969a11ed R12:
0000000000000bb9
[ 84.562737] R13: 0000000000004ba4 R14: 0000000000010000 R15:
0000000000000000
[ 84.562738] FS: 0000000000000000(0000) GS:ffff8ddf2f580000(0000)
knlGS:0000000000000000
[ 84.562739] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 84.562739] CR2: 0000558ee35a9408 CR3: 000000044820a006 CR4:
00000000003606e0
[ 84.562740] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 84.562740] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 84.562741] Call Trace:
[ 84.562771] dce110_stream_encoder_dp_blank+0x12c/0x1a0 [amdgpu]
[ 84.562797] core_link_disable_stream+0x54/0x220 [amdgpu]
[ 84.562864] dce110_reset_hw_ctx_wrap+0xc1/0x1e0 [amdgpu]
[ 84.562904] dce110_apply_ctx_to_hw+0x52/0xa30 [amdgpu]
[ 84.562942] ? hwmgr_handle_task+0x6b/0xc0 [amdgpu]
[ 84.562945] ? _cond_resched+0x15/0x30
[ 84.562972] ? pp_dpm_dispatch_tasks+0x41/0x60 [amdgpu]
[ 84.562991] ? amdgpu_pm_compute_clocks.part.9+0xb7/0x530 [amdgpu]
[ 84.563016] dc_commit_state+0x2e7/0x580 [amdgpu]
[ 84.563043] amdgpu_dm_atomic_commit_tail+0x37c/0xd70 [amdgpu]
[ 84.563062] ? amdgpu_bo_pin_restricted+0xd6/0x300 [amdgpu]
[ 84.563063] ? _cond_resched+0x15/0x30
[ 84.563064] ? wait_for_completion_timeout+0x3a/0x190
[ 84.563065] ? wait_for_completion_interruptible+0x35/0x1d0
[ 84.563070] commit_tail+0x3d/0x70 [drm_kms_helper]
[ 84.563074] drm_atomic_helper_commit+0x103/0x110 [drm_kms_helper]
[ 84.563081] drm_framebuffer_remove+0x2cc/0x3e0 [drm]
[ 84.563088] drm_mode_rmfb_work_fn+0x4f/0x60 [drm]
[ 84.563090] process_one_work+0x1a1/0x350
[ 84.563092] worker_thread+0x30/0x380
[ 84.563093] ? pwq_unbound_release_workfn+0xd0/0xd0
[ 84.563095] kthread+0x112/0x130
[ 84.563096] ? kthread_create_worker_on_cpu+0x70/0x70
[ 84.563097] ret_from_fork+0x35/0x40
[ 84.563098] ---[ end trace db8425ba857d73ac ]---
[ 84.633249] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 10u=
s *
3000 tries - dce110_stream_encoder_dp_blank line:927
[ 84.633296] WARNING: CPU: 6 PID: 155 at
drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:254
generic_reg_wait+0xe7/0x160 [amdgpu]
[ 84.633296] Modules linked in: fuse vfat fat arc4 rtsx_pci_sdmmc mmc_core
mei_wdt rtsx_pci_ms intel_rapl memstick iTCO_wdt iTCO_vendor_support hp_wmi
intel_wmi_thunderbolt wmi_bmof sparse_keymap x86_pkg_temp_thermal
intel_powerclamp coretemp iwlmvm kvm mac80211 snd_hda_codec_conexant
snd_hda_codec_generic snd_hda_codec_hdmi irqbypass crct10dif_pclmul
crc32_pclmul snd_hda_intel snd_usb_audio snd_hda_codec ghash_clmulni_intel
intel_cstate btusb snd_hda_core btrtl snd_usbmidi_lib iwlwifi intel_uncore
snd_rawmidi snd_hwdep snd_seq btbcm intel_rapl_perf btintel snd_seq_device
snd_pcm uvcvideo bluetooth cfg80211 videobuf2_vmalloc videobuf2_memops
videobuf2_v4l2 videobuf2_common joydev videodev thunderbolt snd_timer snd m=
edia
mei_me ecdh_generic i2c_i801 rtsx_pci rfkill mei soundcore intel_pch_thermal
wmi
[ 84.633317] acpi_pad hp_accel lis3lv02d input_polldev hp_wireless
pcc_cpufreq amdgpu i915 chash gpu_sched i2c_algo_bit drm_kms_helper tg3 ttm=
drm
serio_raw libphy e1000e crc32c_intel video
[ 84.633325] CPU: 6 PID: 155 Comm: kworker/6:2 Tainted: G W=20=20=
=20=20=20=20=20=20
4.18.8-200.fc28.x86_64 #1
[ 84.633326] Hardware name: HP HP ZBook 15 G4/8275, BIOS P70 Ver. 01.22
05/17/2018
[ 84.633335] Workqueue: events drm_mode_rmfb_work_fn [drm]
[ 84.633360] RIP: 0010:generic_reg_wait+0xe7/0x160 [amdgpu]
[ 84.633360] Code: 44 24 58 8b 54 24 48 89 de 44 89 4c 24 08 48 8b 4c 24 =
50
48 c7 c7 80 72 a3 c0 e8 64 5f b5 ff 83 7d 20 01 44 8b 4c 24 08 74 02 <0f=
> 0b 48
83 c4 10 44 89 c8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 41 0f=20
[ 84.633376] RSP: 0018:ffff9c4f81ecfa10 EFLAGS: 00010297
[ 84.633377] RAX: 0000000000000000 RBX: 000000000000000a RCX:
0000000000000000
[ 84.633378] RDX: 0000000000000000 RSI: ffff8ddf2f596938 RDI:
ffff8ddf2f596938
[ 84.633378] RBP: ffff8ddf14c09b80 R08: 0000000000000005 R09:
0000000000010200
[ 84.633379] R10: 0000000000000000 R11: ffffffff969a11ed R12:
0000000000000bb9
[ 84.633379] R13: 0000000000004ea4 R14: 0000000000010000 R15:
0000000000000000
[ 84.633380] FS: 0000000000000000(0000) GS:ffff8ddf2f580000(0000)
knlGS:0000000000000000
[ 84.633381] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 84.633381] CR2: 0000558ee35a9408 CR3: 000000044820a006 CR4:
00000000003606e0
[ 84.633382] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 84.633382] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 84.633383] Call Trace:
[ 84.633413] dce110_stream_encoder_dp_blank+0x12c/0x1a0 [amdgpu]
[ 84.633439] core_link_disable_stream+0x54/0x220 [amdgpu]
[ 84.633464] dce110_reset_hw_ctx_wrap+0xc1/0x1e0 [amdgpu]
[ 84.633490] dce110_apply_ctx_to_hw+0x52/0xa30 [amdgpu]
[ 84.633515] ? hwmgr_handle_task+0x6b/0xc0 [amdgpu]
[ 84.633518] ? _cond_resched+0x15/0x30
[ 84.633544] ? pp_dpm_dispatch_tasks+0x41/0x60 [amdgpu]
[ 84.633564] ? amdgpu_pm_compute_clocks.part.9+0xb7/0x530 [amdgpu]
[ 84.633589] dc_commit_state+0x2e7/0x580 [amdgpu]
[ 84.633616] amdgpu_dm_atomic_commit_tail+0x37c/0xd70 [amdgpu]
[ 84.633635] ? amdgpu_bo_pin_restricted+0xd6/0x300 [amdgpu]
[ 84.633636] ? _cond_resched+0x15/0x30
[ 84.633637] ? wait_for_completion_timeout+0x3a/0x190
[ 84.633638] ? wait_for_completion_interruptible+0x35/0x1d0
[ 84.633643] commit_tail+0x3d/0x70 [drm_kms_helper]
[ 84.633647] drm_atomic_helper_commit+0x103/0x110 [drm_kms_helper]
[ 84.633654] drm_framebuffer_remove+0x2cc/0x3e0 [drm]
[ 84.633661] drm_mode_rmfb_work_fn+0x4f/0x60 [drm]
[ 84.633663] process_one_work+0x1a1/0x350
[ 84.633665] worker_thread+0x30/0x380
[ 84.633666] ? pwq_unbound_release_workfn+0xd0/0xd0
[ 84.633668] kthread+0x112/0x130
[ 84.633669] ? kthread_create_worker_on_cpu+0x70/0x70
[ 84.633670] ret_from_fork+0x35/0x40
[ 84.633671] ---[ end trace db8425ba857d73ad ]---
I've observed this with both 4.18.8 and the latest upstream kernel.