Hi all, today I've spotted a warning during hibernation (S4) process while the machine was attempting to disable all HW and write hibernation image to disk just before "amdgpu 0000:00:01.0: GPU pci config reset" and disabling EC interrupt. Besides that everything works just fine. System hibernates and resumes correctly, so I have no idea if I should worry or not. System is Lenovo G50-45 with a6-6310 APU and r4 Mullins. >[14469.490249] [drm] REG_WAIT timeout 1us * 80000 tries - dce_abm_set_pipe line:62 >[14469.490427] WARNING: CPU: 3 PID: 32028 at drivers/gpu/drm/amd/amdgpu/../ display/dc/dc_helper.c:277 generic_reg_wait.cold.3+0x2a/0x31 [amdgpu] >[14469.490429] Modules linked in: rfcomm nf_tables ebtable_nat ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables overlay squashfs loop bnep ipv6 ath3k >btusb btintel bluetooth ecdh_generic rtsx_usb_ms memstick rtsx_usb_sdmmc uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 rtsx_usb videobuf2_common videodev media >ath9k kvm_amd ath9k_common ath9k_hw kvm irqbypass sdhci_pci cqhci sdhci crc32_pclmul ghash_clmulni_intel serio_raw mmc_core mac80211 amdgpu ath xhci_pci xhci_hcd cfg80211 >mfd_core chash gpu_sched ehci_pci ttm ehci_hcd sp5100_tco >[14469.490488] CPU: 3 PID: 32028 Comm: kworker/u8:13 Not tainted 5.0.0-rc1+ #71 >[14469.490490] Hardware name: LENOVO 80E3/Lancer 5B2, BIOS A2CN45WW(V2.13) 08/04/2016 >[14469.490499] Workqueue: events_unbound async_run_entry_fn >[14469.490590] RIP: 0010:generic_reg_wait.cold.3+0x2a/0x31 [amdgpu] >[14469.490595] Code: 44 8b 44 24 68 48 c7 c7 30 2f 43 c0 48 8b 4c 24 60 8b 54 24 58 8b 74 24 04 e8 16 ed 37 ef 41 83 7c 24 20 01 0f 84 d6 a3 fe ff <0f> 0b e9 cf a3 fe ff e8 4d c1 eb ff 48 c7 c7 00 a0 4b c0 e8 a1 77 >[14469.490598] RSP: 0018:ffff9759425ff6e0 EFLAGS: 00010297 >[14469.490602] RAX: 0000000000000043 RBX: 0000000000013881 RCX: 0000000000000000 >[14469.490605] RDX: 0000000000000000 RSI: 0000000000000096 RDI: 00000000ffffffff >[14469.490608] RBP: 0000000000001620 R08: 0000000000000004 R09: 000000000001bb40 >[14469.490611] R10: 000002e453506252 R11: 0000000000000043 R12: ffff8d2552416100 >[14469.490613] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 >[14469.490617] FS: 0000000000000000(0000) GS:ffff8d2557b80000(0000) knlGS: 0000000000000000 >[14469.490620] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >[14469.490623] CR2: 00007efbb0564038 CR3: 0000000212b5e000 CR4: 00000000000406e0 >[14469.490625] Call Trace: >[14469.490743] dce_abm_set_pipe+0x47/0x2a8 [amdgpu] >[14469.490855] dce_abm_immediate_disable+0x15/0x208 [amdgpu] >[14469.490949] dc_link_set_abm_disable+0x31/0x40 [amdgpu] >[14469.491045] dce110_blank_stream+0x69/0x70 [amdgpu] >[14469.491139] core_link_disable_stream+0x3e/0x238 [amdgpu] >[14469.491236] dce110_reset_hw_ctx_wrap+0xbe/0x1e0 [amdgpu] >[14469.491333] dce110_apply_ctx_to_hw+0x46/0x768 [amdgpu] >[14469.491428] ? amdgpu_pm_compute_clocks.part.11+0x265/0x4d8 [amdgpu] >[14469.491539] ? dm_pp_apply_display_requirements+0x1dd/0x1f8 [amdgpu] >[14469.491633] dc_commit_state+0x35e/0x9f0 [amdgpu] >[14469.491731] ? dce110_timing_generator_get_position+0x71/0x160 [amdgpu] >[14469.491842] amdgpu_dm_atomic_commit_tail+0x4b4/0x1cf0 [amdgpu] >[14469.491941] ? dce110_timing_generator_get_crtc_scanoutpos+0x75/0x130 [amdgpu] >[14469.492031] ? dc_stream_get_scanoutpos+0x70/0x90 [amdgpu] >[14469.492140] ? dm_crtc_get_scanoutpos+0x61/0xb0 [amdgpu] >[14469.492234] ? amdgpu_display_get_crtc_scanoutpos+0x80/0x168 [amdgpu] >[14469.492330] ? dce110_timing_generator_get_vblank_counter+0x26/0xa0 [amdgpu] >[14469.492340] ? _raw_spin_unlock_irqrestore+0xf/0x28 >[14469.492346] ? __wake_up_common_lock+0x84/0xb8 >[14469.492456] ? amdgpu_dm_atomic_commit_tail+0x1cf0/0x1cf0 [amdgpu] >[14469.492462] ? preempt_count_add+0x74/0xa0 >[14469.492467] ? _raw_spin_lock_irq+0xf/0x30 >[14469.492471] ? _raw_spin_unlock_irq+0xe/0x20 >[14469.492478] ? wait_for_completion_timeout+0x101/0x128 >[14469.492486] ? drm_atomic_helper_setup_commit+0x4a7/0x660 >[14469.492493] ? drm_atomic_helper_commit+0x107/0x418 >[14469.492499] drm_atomic_helper_commit+0x107/0x418 >[14469.492507] __drm_atomic_helper_disable_all.constprop.30+0x141/0x150 >[14469.492514] drm_atomic_helper_suspend+0xe5/0x118 >[14469.492625] dm_suspend+0x20/0xb8 [amdgpu] >[14469.492716] amdgpu_device_ip_suspend_phase1+0x94/0xc0 [amdgpu] >[14469.492808] amdgpu_device_suspend+0x2e8/0x490 [amdgpu] >[14469.492817] pci_pm_freeze+0x4c/0xc8 >[14469.492823] ? pci_pm_poweroff+0xd0/0xd0 >[14469.492829] dpm_run_callback+0x2a/0x120 >[14469.492837] __device_suspend+0x200/0x7e8 >[14469.492844] async_suspend+0x15/0x88 >[14469.492849] async_run_entry_fn+0x32/0xd8 >[14469.492856] process_one_work+0x1f4/0x428 >[14469.492863] worker_thread+0x43/0x490 >[14469.492869] ? process_one_work+0x428/0x428 >[14469.492873] kthread+0x15d/0x180 >[14469.492878] ? kthread_create_on_node+0x60/0x60 >[14469.492884] ret_from_fork+0x22/0x40 >[14469.492891] ---[ end trace c082c85b81f107b8 ]--- IMHO this warning is similar to later one, as mentioned in a bug report : https://bugs.freedesktop.org/show_bug.cgi?id=106544 ( I know that this one is resolved/fixed due to the system can suspend/hibernate and resume correctly.) >[10999.597203] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 1us * 80000 tries - dce_abm_immediate_disable line:318 >[10999.597307] WARNING: CPU: 3 PID: 14336 at drivers/gpu/drm/amd/amdgpu/../ display/dc/dc_helper.c:249 generic_reg_wait+0xd5/0x140 [amdgpu] >[10999.597309] Modules linked in: rfcomm ebtable_nat ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables overlay squashfs loop bnep ipv6 ath3k btusb btintel >bluetooth ecdh_generic rtsx_usb_ms memstick rtsx_usb_sdmmc uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev media rtsx_usb kvm_amd ath9k >kvm ath9k_common irqbypass ath9k_hw crc32_pclmul amdgpu ghash_clmulni_intel serio_raw mac80211 ath sdhci_pci cqhci sdhci mfd_core chash gpu_sched mmc_core ttm cfg80211 >xhci_pci ehci_pci xhci_hcd ehci_hcd sp5100_tco >[10999.597371] CPU: 3 PID: 14336 Comm: kworker/u8:7 Tainted: G W 4.19.0-rc1+ #4 >[10999.597373] Hardware name: LENOVO 80E3/Lancer 5B2, BIOS A2CN45WW(V2.13) 08/04/2016 >[10999.597381] Workqueue: events_unbound async_run_entry_fn >[10999.597441] RIP: 0010:generic_reg_wait+0xd5/0x140 [amdgpu] >[10999.597445] Code: 58 89 de 48 8b 4c 24 50 48 c7 c7 e0 b1 5b c0 8b 54 24 48 44 89 4c 24 08 e8 c8 3c 9e c6 41 83 7c 24 18 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 >[10999.597447] RSP: 0018:ffff9f86c24eb8e8 EFLAGS: 00010297 >[10999.597450] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000001 >[10999.597452] RDX: 0000000000000000 RSI: 0000000000000086 RDI: 00000000ffffffff >[10999.597454] RBP: 0000000000000000 R08: 000011fa4e0922d1 R09: 0000000000000001 >[10999.597456] R10: 0000000000000000 R11: 0000000000025e1c R12: ffff9976d0a9ae80 >[10999.597458] R13: 0000000000013881 R14: 0000000000000001 R15: 0000000000000000 >[10999.597461] FS: 0000000000000000(0000) GS:ffff9976d7b80000(0000) knlGS: 0000000000000000 >[10999.597463] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >[10999.597465] CR2: 00007f7bcc7c5018 CR3: 000000020eb25000 CR4: 00000000000406e0 >[10999.597467] Call Trace: >[10999.597549] dce_abm_immediate_disable+0x41/0x170 [amdgpu] >[10999.597615] dc_link_set_abm_disable+0x31/0x40 [amdgpu] >[10999.597679] dce110_blank_stream+0x6f/0x78 [amdgpu] >[10999.597742] core_link_disable_stream+0x4f/0x218 [amdgpu] >[10999.597749] ? preempt_count_add+0x44/0x98 >[10999.597754] ? wake_up_klogd+0x4a/0x68 >[10999.597757] ? vprintk_emit+0x8c/0x1a0 >[10999.597822] dce110_reset_hw_ctx_wrap+0xbb/0x1e8 [amdgpu] >[10999.597889] dce110_apply_ctx_to_hw+0x3f/0x480 [amdgpu] >[10999.597955] ? amdgpu_pm_compute_clocks+0x31c/0x530 [amdgpu] >[10999.598035] ? dm_pp_apply_display_requirements+0x192/0x1a0 [amdgpu] >[10999.598099] dc_commit_state+0x2d7/0x560 [amdgpu] >[10999.598182] amdgpu_dm_atomic_commit_tail+0x29f/0xd20 [amdgpu] >[10999.598190] ? preempt_count_add+0x63/0x98 >[10999.598196] ? _raw_spin_lock_irq+0xf/0x30 >[10999.598199] ? _raw_spin_unlock_irq+0xe/0x20 >[10999.598203] ? wait_for_completion_timeout+0x101/0x128 >[10999.598206] ? _raw_spin_lock_irq+0xf/0x30 >[10999.598209] ? _raw_spin_unlock_irq+0xe/0x20 >[10999.598213] ? wait_for_completion_interruptible+0xde/0x168 >[10999.598291] ? dm_plane_helper_prepare_fb+0x1e2/0x2f8 [amdgpu] >[10999.598299] commit_tail+0x38/0x60 >[10999.598304] drm_atomic_helper_commit+0x102/0x110 >[10999.598309] __drm_atomic_helper_disable_all.constprop.30+0x13d/0x150 >[10999.598314] drm_atomic_helper_suspend+0x4c/0xd0 >[10999.598396] dm_suspend+0x2d/0x50 [amdgpu] >[10999.598458] amdgpu_device_ip_suspend_phase1+0x8e/0xc0 [amdgpu] >[10999.598522] amdgpu_device_suspend+0x234/0x3c8 [amdgpu] >[10999.598531] pci_pm_suspend+0x76/0x128 >[10999.598535] ? pci_pm_freeze+0xc8/0xc8 >[10999.598541] dpm_run_callback+0x2a/0x110 >[10999.598546] __device_suspend+0xe5/0x3d0 >[10999.598552] async_suspend+0x15/0x88 >[10999.598556] async_run_entry_fn+0x32/0xd8 >[10999.598562] process_one_work+0x1f4/0x3e0 >[10999.598567] worker_thread+0x28/0x3c0 >[10999.598571] ? rescuer_thread+0x330/0x330 >[10999.598575] kthread+0x118/0x130 >[10999.598580] ? kthread_create_worker_on_cpu+0x60/0x60 >[10999.598585] ret_from_fork+0x22/0x40 >[10999.598593] ---[ end trace c54e6357600c238a ]--- Maybe this could be helpful and will put some light what is going on. Thanks, Przemek.
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