https://bugs.freedesktop.org/show_bug.cgi?id=105982

Bug ID: 105982 Summary: Plugging HDMI cable hits [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout Product: DRI Version: DRI git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: jian-hong@endlessm.com

Created attachment 138748 --> https://bugs.freedesktop.org/attachment.cgi?id=138748&action=edit the dmesg

I have an AMD Ryzen 5 2500U with Radeon Vega Mobile Gfx laptop.

After system is booted and plugged the HDMI cable, the laptop's display had been blurred a while than came back again, and the extended display also worked. However, I can see the amdgpu module hits the error in dmesg: "[drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 1us * 10 tries - optc1_lock line:553" and the warning message.

[ 70.999928] amdgpu 0000:03:00.0: ring 12(vcn_enc0) uses VM inv eng 6 on hub 1 [ 70.999964] amdgpu 0000:03:00.0: ring 13(vcn_enc1) uses VM inv eng 7 on hub 1 [ 71.005998] [drm] Initialized amdgpu 3.23.0 20150101 for 0000:03:00.0 on minor 0 [ 88.313107] Bluetooth: RFCOMM TTY layer initialized [ 88.313115] Bluetooth: RFCOMM socket layer initialized [ 88.313120] Bluetooth: RFCOMM ver 1.11 [ 99.918971] rfkill: input handler disabled [ 129.028256] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 1us * 10 tries - optc1_lock line:553 [ 129.028302] WARNING: CPU: 0 PID: 943 at drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:195 generic_reg_wait+0xeb/0x160 [amdgpu] [ 129.028303] Modules linked in: rfcomm amdkfd amd_iommu_v2 amdgpu chash gpu_sched ttm drm_kms_helper drm i2c_algo_bit fb_sys_fops syscopyarea sysfillrect sysimgblt ccm cmac bnep zram arc4 snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep iwlmvm snd_pcm uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 edac_mce_amd snd_timer mac80211 videobuf2_common videodev media asus_nb_wmi asus_wmi wmi_bmof kvm_amd ccp kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd btusb btrtl r8169 btbcm pcbc btintel mii aesni_intel sparse_keymap soundcore iwlwifi bluetooth ecdh_generic cfg80211 joydev input_leds shpchp aes_x86_64 crypto_simd glue_helper cryptd i2c_piix4 wmi mac_hid tpm_crb asus_wireless ip_tables x_tables uas usb_storage hid_multitouch hid_generic [ 129.028342] serio_raw ahci libahci video i2c_hid hid [ 129.028348] CPU: 0 PID: 943 Comm: Xorg Not tainted 4.16.0 #9 [ 129.028349] Hardware name: ASUSTeK COMPUTER INC. VivoBook 15 X505ZA/X505ZA, BIOS X505ZA.200.T08 02/03/2018 [ 129.028380] RIP: 0010:generic_reg_wait+0xeb/0x160 [amdgpu] [ 129.028382] RSP: 0018:ffffafa98204b840 EFLAGS: 00010297 [ 129.028383] RAX: 0000000000000229 RBX: 000000000000000b RCX: 0000000000000000 [ 129.028385] RDX: 0000000000000000 RSI: ffff8b5e536164b8 RDI: ffff8b5e536164b8 [ 129.028386] RBP: ffffafa98204b880 R08: 0000000000006e60 R09: 00000000000003ad [ 129.028387] R10: 0000000000000001 R11: ffffffffa43527ed R12: 0000000000000001 [ 129.028388] R13: ffff8b5e50f1b880 R14: 0000000000000100 R15: 0000000000000001 [ 129.028390] FS: 00007ff314432a40(0000) GS:ffff8b5e53600000(0000) knlGS:0000000000000000 [ 129.028391] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 129.028392] CR2: 0000564dbd755970 CR3: 00000002f45d8000 CR4: 00000000003406f0 [ 129.028393] Call Trace: [ 129.028429] optc1_lock+0xa2/0xb0 [amdgpu] [ 129.028463] dcn10_apply_ctx_for_surface+0xed/0x510 [amdgpu] [ 129.028494] dc_commit_state+0x266/0x5d0 [amdgpu] [ 129.028523] ? set_freesync_on_streams.part.5+0xa6/0x2a0 [amdgpu] [ 129.028552] ? mod_freesync_set_user_enable+0x15f/0x1a0 [amdgpu] [ 129.028586] amdgpu_dm_atomic_commit_tail+0x348/0xf80 [amdgpu] [ 129.028611] ? amdgpu_bo_pin_restricted+0x1fe/0x2b0 [amdgpu] [ 129.028614] ? _cond_resched+0x1a/0x50 [ 129.028617] ? wait_for_completion_timeout+0x3a/0x140 [ 129.028619] ? _cond_resched+0x1a/0x50 [ 129.028621] ? wait_for_completion_interruptible+0x37/0x180 [ 129.028622] ? ww_mutex_unlock+0x26/0x30 [ 129.028630] commit_tail+0x42/0x70 [drm_kms_helper] [ 129.028636] drm_atomic_helper_commit+0x10c/0x120 [drm_kms_helper] [ 129.028669] amdgpu_dm_atomic_commit+0x87/0xa0 [amdgpu] [ 129.028681] drm_atomic_commit+0x51/0x60 [drm] [ 129.028686] drm_atomic_helper_set_config+0x6e/0x90 [drm_kms_helper] [ 129.028695] __drm_mode_set_config_internal+0x6b/0x120 [drm] [ 129.028704] drm_mode_setcrtc+0x4f1/0x680 [drm] [ 129.028713] ? drm_mode_getcrtc+0x190/0x190 [drm] [ 129.028721] drm_ioctl_kernel+0x6b/0xb0 [drm] [ 129.028729] drm_ioctl+0x33c/0x3f0 [drm] [ 129.028737] ? drm_mode_getcrtc+0x190/0x190 [drm] [ 129.028760] amdgpu_drm_ioctl+0x4f/0x90 [amdgpu] [ 129.028763] do_vfs_ioctl+0xa6/0x610 [ 129.028766] ? recalc_sigpending+0x1b/0x50 [ 129.028768] ? _copy_from_user+0x36/0x70 [ 129.028770] SyS_ioctl+0x79/0x90 [ 129.028772] ? exit_to_usermode_loop+0xa7/0xd0 [ 129.028774] do_syscall_64+0x73/0x130 [ 129.028777] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 129.028778] RIP: 0033:0x7ff3118f1dd7 [ 129.028779] RSP: 002b:00007fffaba215a8 EFLAGS: 00003246 ORIG_RAX: 0000000000000010 [ 129.028781] RAX: ffffffffffffffda RBX: 000000000000000e RCX: 00007ff3118f1dd7 [ 129.028782] RDX: 00007fffaba215e0 RSI: 00000000c06864a2 RDI: 000000000000000e [ 129.028783] RBP: 00007fffaba215e0 R08: 0000000000000000 R09: 000056528d76ac40 [ 129.028784] R10: 00007fffaba21780 R11: 0000000000003246 R12: 00000000c06864a2 [ 129.028785] R13: 000000000000000e R14: 000056528d25d9e0 R15: 000056528d129380 [ 129.028787] Code: 44 8b 45 10 44 89 e1 48 c7 c2 00 74 e0 c0 48 c7 c7 b3 f0 e0 c0 44 89 55 d4 50 e8 91 cf c0 ff 41 83 7d 20 01 44 8b 55 d4 58 74 02 <0f> 0b 48 8d 65 d8 44 89 d0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 41 [ 129.028810] ---[ end trace d73192e5e8ac0713 ]---

The kernel that I used is Linux 4.16.0.