Just experienced the bug. Now one external monitor is off out of two and I have FIFO underrun in dmesg:
[176800.326018] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun [176800.359505] [drm:pipe_config_mismatch [i915]] *ERROR* mismatch in pixel_rate (expected 148500, found 296999) [176800.359591] [drm:pipe_config_mismatch [i915]] *ERROR* mismatch in shared_dpll (expected 0000000055585ceb, found 0000000067839797) [176800.359667] [drm:pipe_config_mismatch [i915]] *ERROR* mismatch in dpll_hw_state.ctrl1 (expected 0x00000003, found 0x00000001) [176800.359742] [drm:pipe_config_mismatch [i915]] *ERROR* mismatch in base.adjusted_mode.crtc_clock (expected 148500, found 296999) [176800.359813] [drm:pipe_config_mismatch [i915]] *ERROR* mismatch in port_clock (expected 270000, found 540000) [176800.359816] ------------[ cut here ]------------ [176800.359817] pipe state doesn't match! [176800.359993] WARNING: CPU: 0 PID: 4800 at drivers/gpu/drm/i915/display/intel_display.c:13158 verify_crtc_state+0x2ad/0x300 [i915] [176800.359995] Modules linked in: binfmt_misc vhost_net vhost tap btrfs xor zstd_compress raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs rfcomm ccm xt_MASQUERADE xt_conntrack xt_CHECKSUM ipt_REJECT nf_reject_ipv4 xt_tcpudp ip6table_mangle ip6table_nat iptable_mangle iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter bpfilter bridge stp llc cmac algif_hash algif_skcipher af_alg bnep nls_iso8859_1 snd_soc_skl_hda_dsp snd_hda_codec_hdmi snd_soc_hdac_hdmi snd_hda_codec_realtek snd_soc_dmic snd_hda_codec_generic x86_pkg_temp_thermal snd_sof_pci intel_powerclamp snd_sof_intel_hda_common snd_soc_hdac_hda coretemp snd_sof_intel_hda snd_sof_intel_byt mei_hdcp kvm_intel snd_sof_intel_ipc intel_rapl_msr snd_sof kvm snd_sof_xtensa_dsp snd_hda_ext_core snd_soc_acpi_intel_match crct10dif_pclmul snd_soc_acpi ghash_clmulni_intel snd_soc_core aesni_intel crypto_simd cryptd glue_helper snd_compress rapl ac97_bus [176800.360042] intel_cstate snd_pcm_dmaengine snd_hda_intel snd_intel_dspcfg snd_seq_midi serio_raw snd_hda_codec snd_usb_audio snd_seq_midi_event snd_hda_core cdc_ether iwlmvm usbnet thinkpad_acpi snd_usbmidi_lib snd_hwdep r8152 nvram ledtrig_audio mii mac80211 snd_rawmidi wmi_bmof snd_pcm intel_wmi_thunderbolt libarc4 snd_seq uvcvideo btusb iwlwifi snd_seq_device btrtl videobuf2_vmalloc btbcm videobuf2_memops btintel snd_timer videobuf2_v4l2 bluetooth joydev videobuf2_common input_leds videodev rtsx_pci_ms mei_me mc cfg80211 ecdh_generic nxp_nci_i2c memstick ecc mei nxp_nci snd nci processor_thermal_device intel_rapl_common nfc intel_soc_dts_iosf ucsi_acpi typec_ucsi typec soundcore int3403_thermal int340x_thermal_zone acpi_pad mac_hid intel_hid int3400_thermal sparse_keymap acpi_thermal_rel sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 zfs(PO) zunicode(PO) zavl(PO) icp(PO) zcommon(PO) znvpair(PO) spl(O) zlua(PO) hid_logitech_hidpp hid_logitech_dj hid_generic usbhid [176800.360095] hid rtsx_pci_sdmmc i915 crc32_pclmul i2c_algo_bit drm_kms_helper psmouse syscopyarea nvme e1000e sysfillrect sysimgblt thunderbolt fb_sys_fops intel_lpss_pci i2c_i801 intel_lpss nvme_core drm idma64 rtsx_pci virt_dma wmi pinctrl_cannonlake video pinctrl_intel [176800.360118] CPU: 0 PID: 4800 Comm: Xorg Tainted: P O 5.4.0-52-generic #57-Ubuntu [176800.360120] Hardware name: LENOVO 20S1S2H600/20S1S2H600, BIOS N2XET23W (1.13 ) 08/26/2020 [176800.360186] RIP: 0010:verify_crtc_state+0x2ad/0x300 [i915] [176800.360191] Code: b6 45 bf e9 8d fe ff ff 80 3d 65 76 10 00 00 0f b6 f0 48 c7 c7 48 8a 5f c0 75 32 e8 5d 87 d7 ff e9 1e fe ff ff e8 7e bd f7 cd <0f> 0b e9 1b ff ff ff e8 72 bd f7 cd 0f 0b e9 85 fe ff ff e8 66 bd [176800.360193] RSP: 0018:ffffb32055adfa40 EFLAGS: 00010286 [176800.360196] RAX: 0000000000000000 RBX: ffff983f570202b0 RCX: 0000000000000006 [176800.360198] RDX: 0000000000000007 RSI: 0000000000000092 RDI: ffff983f6d4178c0 [176800.360199] RBP: ffffb32055adfa88 R08: 0000000000002b29 R09: 0000000000000004 [176800.360201] R10: 0000000000000000 R11: 0000000000000001 R12: ffff983f5732a000 [176800.360203] R13: ffff983f570202b8 R14: ffff983f57020000 R15: ffff983f2e18d000 [176800.360206] FS: 00007f47ed9c8a80(0000) GS:ffff983f6d400000(0000) knlGS:0000000000000000 [176800.360208] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [176800.360210] CR2: 00007f59a3e9c000 CR3: 000000080f096004 CR4: 00000000003626f0 [176800.360211] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [176800.360213] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [176800.360214] Call Trace: [176800.360289] intel_atomic_commit_tail+0xa43/0x12e0 [i915] [176800.360357] intel_atomic_commit+0x284/0x2b0 [i915] [176800.360394] drm_atomic_commit+0x4a/0x50 [drm] [176800.360411] drm_atomic_helper_set_config+0x89/0xa0 [drm_kms_helper] [176800.360438] drm_mode_setcrtc+0x1cd/0x7a0 [drm] [176800.360467] ? drm_syncobj_array_free+0x44/0x50 [drm] [176800.360490] ? drm_mode_getcrtc+0x190/0x190 [drm] [176800.360511] drm_ioctl_kernel+0xae/0xf0 [drm] [176800.360532] drm_ioctl+0x234/0x3d0 [drm] [176800.360553] ? drm_mode_getcrtc+0x190/0x190 [drm] [176800.360560] do_vfs_ioctl+0x407/0x670 [176800.360565] ? recalc_sigpending+0x1c/0x60 [176800.360571] ? _copy_from_user+0x3e/0x60 [176800.360574] ksys_ioctl+0x67/0x90 [176800.360577] __x64_sys_ioctl+0x1a/0x20 [176800.360582] do_syscall_64+0x57/0x190 [176800.360589] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [176800.360591] RIP: 0033:0x7f47edd2850b [176800.360595] Code: 0f 1e fa 48 8b 05 85 39 0d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 55 39 0d 00 f7 d8 64 89 01 48 [176800.360597] RSP: 002b:00007ffc8184fd38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [176800.360600] RAX: ffffffffffffffda RBX: 00007ffc8184fd70 RCX: 00007f47edd2850b [176800.360602] RDX: 00007ffc8184fd70 RSI: 00000000c06864a2 RDI: 000000000000000c [176800.360603] RBP: 00000000c06864a2 R08: 0000000000000000 R09: 0000561e9fc16650 [176800.360605] R10: 0000000000000000 R11: 0000000000000246 R12: 0000561e9eb21300 [176800.360606] R13: 000000000000000c R14: 0000561e9e934860 R15: 0000000000000001 [176800.360611] ---[ end trace 86d37062033c9455 ]--- -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1901894 Title: One or more monitors turns off but system usable until monitor orientation change Status in linux package in Ubuntu: Confirmed Bug description: I'm having random lockups, sort of. When this happens, usually one monitor out of 3 (including laptop display) will turn off (one of the external monitors) sometimes both external monitors. Usually I can spawn new applications and the system is usable but if I try to detect the displays again or if I undock, all remaining screens go blank (normal) but don't return like usual. I'm unable to change to a new virtual console so all I can do is reboot. Sometimes I'm able to do a soft reboot (with power button), other times I have to hold the power button to do a hard shutdown. I'm not sure if it's related but I get this error in dmesg: [ 1.001281] BERT: Error records from previous boot: [ 1.001281] [Hardware Error]: event severity: fatal [ 1.001282] [Hardware Error]: Error 0, type: fatal [ 1.001283] [Hardware Error]: section type: unknown, 81212a96-09ed-4996-9471-8d729c8e69ed [ 1.001284] [Hardware Error]: section length: 0xc20 [ 1.001285] [Hardware Error]: 00000000: 00000201 00000000 00000000 01002001 ............. .. [ 1.001286] [Hardware Error]: 00000010: 00000000 00000000 00000000 00000000 ................ [ 1.001286] [Hardware Error]: 00000020: 01002001 00000006 527ed301 0000022b . ........~R+... [ 1.001287] [Hardware Error]: 00000030: 00000002 0000004e 090a004c 800003ff ....N...L....... [ 1.001288] [Hardware Error]: 00000040: 02002080 7f05fe03 00000001 00000000 . .............. [ 1.001288] [Hardware Error]: 00000050: 22000000 01200000 10002031 00004000 ...".. .1 ...@.. [ 1.001289] [Hardware Error]: 00000060: 01000002 c7000200 ff0b0204 ff01f08b ................ [ 1.001289] [Hardware Error]: 00000070: 750e687b 9a002000 00110000 00002000 {h.u. ....... .. [ 1.001290] [Hardware Error]: 00000080: 04000000 00000000 00502881 000ecf1a .........(P..... [ 1.001291] [Hardware Error]: 00000090: 00035d00 00000001 5af3f070 1020003c .]......p..Z<. . [ 1.001291] [Hardware Error]: 000000a0: 000000c6 fef3f900 de3717fc ff477ecf ..........7..~G. [ 1.001292] [Hardware Error]: 000000b0: 7cf3f8ff 18321000 034178cf 5af3f01e ...|..2..xA....Z [ 1.001292] [Hardware Error]: 000000c0: 1000003c 000000c6 00000000 00000000 <............... [ 1.001293] [Hardware Error]: 000000d0: 00000000 c4302000 08241cfc 0100000c ..... 0...$..... [ 1.001293] [Hardware Error]: 000000e0: 010c0700 21c80003 00b88030 18001800 .......!0....... [ 1.001294] [Hardware Error]: 000000f0: 00000000 024166c0 00000000 00000000 .....fA......... [ 1.001295] [Hardware Error]: 00000100: 000010c0 00004200 00000000 0114b800 .....B.......... [ 1.001295] [Hardware Error]: 00000110: 00000002 00000009 00000080 4880bf01 ...............H [ 1.001296] [Hardware Error]: 00000120: 883f0080 b27f40e3 77c0c90f 4880bffc ..?..@.....w...H [ 1.001296] [Hardware Error]: 00000130: 883f0080 990290e3 003b1816 00010000 ..?.......;..... [ 1.001297] [Hardware Error]: 00000140: 00010000 81010000 00333833 00010000 ........383..... [ 1.001298] [Hardware Error]: 00000150: 00010000 98010000 ff063506 ff00000f .........5...... [ 1.001298] [Hardware Error]: 00000160: ff00000f 8000000f ff0db303 ff00000f ................ [ 1.001299] [Hardware Error]: 00000170: ff00000f 0000000f 00000000 00000000 ................ [ 1.001299] [Hardware Error]: 00000180: 00000000 00000000 00000000 00000000 ................ [ 1.001300] [Hardware Error]: 00000190: 00000000 00000000 00000000 00000000 ................ [ 1.001300] [Hardware Error]: 000001a0: 00010000 00010000 00010000 82010000 ................ [ 1.001301] [Hardware Error]: 000001b0: 004018f6 00010000 00010000 ff010000 ..@............. [ 1.001301] [Hardware Error]: 000001c0: ff00000f ff00000f ff00000f 8100000f ................ [ 1.001302] [Hardware Error]: 000001d0: ff00ec06 ff00000f ff00000f 0000000f ................ [ 1.001302] [Hardware Error]: 000001e0: 00000000 00000000 00000000 00000000 ................ [ 1.001303] [Hardware Error]: 000001f0: 00000000 00000000 00000000 00000000 ................ [ 1.001303] [Hardware Error]: 00000200: 00000000 00000000 00000000 00000000 ................ [ 1.001304] [Hardware Error]: 00000210: 00000000 00000000 09200000 dec90002 .......... ..... [ 1.001304] [Hardware Error]: 00000220: fc0c020e 015e00a9 3900301e 00000000 ......^..0.9.... [ 1.001305] [Hardware Error]: 00000230: 00000000 00000000 00000000 00000000 ................ [ 1.001305] [Hardware Error]: 00000240: 00000000 00000000 00000000 00000000 ................ [ 1.001306] [Hardware Error]: 00000250: 00000000 00000000 00000000 00000000 ................ [ 1.001306] [Hardware Error]: 00000260: 00000000 00000000 00000000 00000000 ................ [ 1.001307] [Hardware Error]: 00000270: 00000000 00000000 00000000 00000000 ................ [ 1.001307] [Hardware Error]: 00000280: 00000000 00000000 00000000 00000000 ................ [ 1.001308] [Hardware Error]: 00000290: 00000000 00000000 00000000 00000000 ................ [ 1.001308] [Hardware Error]: 000002a0: 00000000 00000000 00000000 00000000 ................ [ 1.001309] [Hardware Error]: 000002b0: 00000000 00000000 00000000 00000000 ................ [ 1.001309] [Hardware Error]: 000002c0: 00000000 00000000 00000000 00000000 ................ [ 1.001310] [Hardware Error]: 000002d0: 00000000 00000000 00000000 00000000 ................ [ 1.001310] [Hardware Error]: 000002e0: 00000000 00000000 00000000 00000000 ................ [ 1.001311] [Hardware Error]: 000002f0: 00000000 00000000 00000000 00000000 ................ [ 1.001311] [Hardware Error]: 00000300: 00000000 00000000 00000000 00000000 ................ [ 1.001312] [Hardware Error]: 00000310: 00000000 00000000 00000000 00000000 ................ [ 1.001312] [Hardware Error]: 00000320: 00000000 00000000 00000000 00000000 ................ [ 1.001313] [Hardware Error]: 00000330: 00000000 00000000 00000000 00000000 ................ [ 1.001313] [Hardware Error]: 00000340: 00000000 00000000 00000000 00000000 ................ [ 1.001314] [Hardware Error]: 00000350: 00000000 00000000 00000000 00000000 ................ [ 1.001314] [Hardware Error]: 00000360: 00000000 00000000 00000000 00000000 ................ [ 1.001315] [Hardware Error]: 00000370: 00000000 00000000 00000000 00000000 ................ [ 1.001315] [Hardware Error]: 00000380: 00000000 00000000 00000000 00000000 ................ [ 1.001315] [Hardware Error]: 00000390: 00000000 00000000 00000000 00000000 ................ [ 1.001316] [Hardware Error]: 000003a0: 00000000 00000000 00000000 00000000 ................ [ 1.001316] [Hardware Error]: 000003b0: 00000000 00000000 00000000 00000000 ................ [ 1.001317] [Hardware Error]: 000003c0: 00000000 00000000 00000000 00000000 ................ [ 1.001317] [Hardware Error]: 000003d0: 00000000 00000000 00000000 00000000 ................ [ 1.001318] [Hardware Error]: 000003e0: 00000000 00000000 00000000 00000000 ................ [ 1.001318] [Hardware Error]: 000003f0: 00000000 00000000 00000000 00000000 ................ [ 1.001319] [Hardware Error]: 00000400: 00000000 00000000 00000000 00000000 ................ [ 1.001319] [Hardware Error]: 00000410: 00000000 00000000 00000000 00000000 ................ [ 1.001320] [Hardware Error]: 00000420: 00000000 00000000 00000000 00000000 ................ [ 1.001320] [Hardware Error]: 00000430: 00000000 00000000 00000000 00000000 ................ [ 1.001321] [Hardware Error]: 00000440: 00000000 00000000 00000000 00000000 ................ [ 1.001321] [Hardware Error]: 00000450: 00000000 00000000 00000000 00000000 ................ [ 1.001322] [Hardware Error]: 00000460: 00000000 00000000 00000000 00000000 ................ [ 1.001322] [Hardware Error]: 00000470: 00000000 00000000 00000000 00000000 ................ [ 1.001323] [Hardware Error]: 00000480: 00000000 00000000 00000000 00000000 ................ [ 1.001323] [Hardware Error]: 00000490: 00000000 00000000 00000000 00000000 ................ [ 1.001324] [Hardware Error]: 000004a0: 00000000 00000000 00000000 00000000 ................ [ 1.001324] [Hardware Error]: 000004b0: 00000000 00000000 00000000 00000000 ................ [ 1.001325] [Hardware Error]: 000004c0: 00000000 00000000 00000000 00000000 ................ [ 1.001325] [Hardware Error]: 000004d0: 00000000 00000000 00000000 00000000 ................ [ 1.001326] [Hardware Error]: 000004e0: 00000000 00000000 00000000 00000000 ................ [ 1.001326] [Hardware Error]: 000004f0: 00000000 00000000 00000000 00000000 ................ [ 1.001326] [Hardware Error]: 00000500: 00000000 00000000 00000000 00000000 ................ [ 1.001327] [Hardware Error]: 00000510: 00000000 00000000 00000000 00000000 ................ [ 1.001327] [Hardware Error]: 00000520: 00000000 00000000 00000000 00000000 ................ [ 1.001328] [Hardware Error]: 00000530: 00000000 00000000 00000000 00000000 ................ [ 1.001328] [Hardware Error]: 00000540: 00000000 00000000 00000000 00000000 ................ [ 1.001329] [Hardware Error]: 00000550: 00000000 00000000 00000000 00000000 ................ [ 1.001329] [Hardware Error]: 00000560: 00000000 00000000 00000000 00000000 ................ [ 1.001330] [Hardware Error]: 00000570: 00000000 00000000 00000000 00000000 ................ [ 1.001330] [Hardware Error]: 00000580: 00000000 00000000 00000000 00000000 ................ [ 1.001331] [Hardware Error]: 00000590: 00000000 00000000 00000000 00000000 ................ [ 1.001331] [Hardware Error]: 000005a0: 00000000 00000000 00000000 00000000 ................ [ 1.001332] [Hardware Error]: 000005b0: 00000000 00000000 00000000 00000000 ................ [ 1.001332] [Hardware Error]: 000005c0: 00000000 00000000 00000000 00000000 ................ [ 1.001333] [Hardware Error]: 000005d0: 00000000 00000000 00000000 00000000 ................ [ 1.001333] [Hardware Error]: 000005e0: 00000000 00000000 00000000 00000000 ................ [ 1.001334] [Hardware Error]: 000005f0: 00000000 00000000 00000000 00000000 ................ [ 1.001334] [Hardware Error]: 00000600: 00000000 00000000 00000000 00000000 ................ [ 1.001335] [Hardware Error]: 00000610: 00000000 00000000 00000000 00000000 ................ [ 1.001335] [Hardware Error]: 00000620: 00000000 00000000 00000000 00000000 ................ [ 1.001336] [Hardware Error]: 00000630: 00000000 00000000 00000000 00000000 ................ [ 1.001336] [Hardware Error]: 00000640: 00000000 00000000 00000000 00000000 ................ [ 1.001337] [Hardware Error]: 00000650: 00000000 00000000 00000000 00000000 ................ [ 1.001337] [Hardware Error]: 00000660: 00000000 00000000 00000000 00000000 ................ [ 1.001338] [Hardware Error]: 00000670: 00000000 00000000 00000000 00000000 ................ [ 1.001338] [Hardware Error]: 00000680: 00000000 00000000 00000000 00000000 ................ [ 1.001338] [Hardware Error]: 00000690: 00000000 00000000 00000000 00000000 ................ [ 1.001339] [Hardware Error]: 000006a0: 00000000 00000000 00000000 00000000 ................ [ 1.001339] [Hardware Error]: 000006b0: 00000000 00000000 00000000 00000000 ................ [ 1.001340] [Hardware Error]: 000006c0: 00000000 00000000 00000000 00000000 ................ [ 1.001340] [Hardware Error]: 000006d0: 00000000 00000000 00000000 00000000 ................ [ 1.001341] [Hardware Error]: 000006e0: 00000000 00000000 00000000 00000000 ................ [ 1.001341] [Hardware Error]: 000006f0: 00000000 00000000 00000000 00000000 ................ [ 1.001342] [Hardware Error]: 00000700: 00000000 00000000 00000000 00000000 ................ [ 1.001342] [Hardware Error]: 00000710: 00000000 00000000 00000000 00000000 ................ [ 1.001343] [Hardware Error]: 00000720: 00000000 00000000 00000000 00000000 ................ [ 1.001343] [Hardware Error]: 00000730: 00000000 00000000 00000000 00000000 ................ [ 1.001344] [Hardware Error]: 00000740: 00000000 00000000 00000000 00000000 ................ [ 1.001344] [Hardware Error]: 00000750: 00000000 00000000 00000000 00000000 ................ [ 1.001345] [Hardware Error]: 00000760: 00000000 00000000 00000000 00000000 ................ [ 1.001345] [Hardware Error]: 00000770: 00000000 00000000 00000000 00000000 ................ [ 1.001346] [Hardware Error]: 00000780: 00000000 00000000 00000000 00000000 ................ [ 1.001346] [Hardware Error]: 00000790: 00000000 00000000 00000000 00000000 ................ [ 1.001347] [Hardware Error]: 000007a0: 00000000 00000000 00000000 00000000 ................ [ 1.001347] [Hardware Error]: 000007b0: 00000000 00000000 00000000 00000000 ................ [ 1.001348] [Hardware Error]: 000007c0: 00000000 00000000 00000000 00000000 ................ [ 1.001348] [Hardware Error]: 000007d0: 00000000 00000000 00000000 00000000 ................ [ 1.001349] [Hardware Error]: 000007e0: 00000000 00000000 00000000 00000000 ................ [ 1.001349] [Hardware Error]: 000007f0: 00000000 00000000 00000000 00000000 ................ [ 1.001349] [Hardware Error]: 00000800: 00000000 00000000 00000000 00000000 ................ [ 1.001350] [Hardware Error]: 00000810: 00000000 00000000 00000000 00000000 ................ [ 1.001351] [Hardware Error]: 00000820: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001351] [Hardware Error]: 00000830: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001352] [Hardware Error]: 00000840: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001352] [Hardware Error]: 00000850: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001353] [Hardware Error]: 00000860: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001353] [Hardware Error]: 00000870: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001354] [Hardware Error]: 00000880: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001354] [Hardware Error]: 00000890: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001355] [Hardware Error]: 000008a0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001355] [Hardware Error]: 000008b0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001356] [Hardware Error]: 000008c0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001356] [Hardware Error]: 000008d0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001357] [Hardware Error]: 000008e0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001357] [Hardware Error]: 000008f0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001358] [Hardware Error]: 00000900: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001358] [Hardware Error]: 00000910: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001359] [Hardware Error]: 00000920: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001359] [Hardware Error]: 00000930: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001360] [Hardware Error]: 00000940: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001360] [Hardware Error]: 00000950: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001361] [Hardware Error]: 00000960: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001361] [Hardware Error]: 00000970: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001362] [Hardware Error]: 00000980: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001362] [Hardware Error]: 00000990: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001363] [Hardware Error]: 000009a0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001363] [Hardware Error]: 000009b0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001364] [Hardware Error]: 000009c0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001364] [Hardware Error]: 000009d0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001365] [Hardware Error]: 000009e0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001365] [Hardware Error]: 000009f0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001366] [Hardware Error]: 00000a00: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001366] [Hardware Error]: 00000a10: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001367] [Hardware Error]: 00000a20: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001367] [Hardware Error]: 00000a30: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001368] [Hardware Error]: 00000a40: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001368] [Hardware Error]: 00000a50: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001369] [Hardware Error]: 00000a60: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001369] [Hardware Error]: 00000a70: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001370] [Hardware Error]: 00000a80: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001370] [Hardware Error]: 00000a90: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001371] [Hardware Error]: 00000aa0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001371] [Hardware Error]: 00000ab0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001372] [Hardware Error]: 00000ac0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001372] [Hardware Error]: 00000ad0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001373] [Hardware Error]: 00000ae0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001373] [Hardware Error]: 00000af0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001374] [Hardware Error]: 00000b00: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001374] [Hardware Error]: 00000b10: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001375] [Hardware Error]: 00000b20: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001375] [Hardware Error]: 00000b30: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001376] [Hardware Error]: 00000b40: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001376] [Hardware Error]: 00000b50: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001377] [Hardware Error]: 00000b60: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001377] [Hardware Error]: 00000b70: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001378] [Hardware Error]: 00000b80: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001378] [Hardware Error]: 00000b90: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001379] [Hardware Error]: 00000ba0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001379] [Hardware Error]: 00000bb0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001380] [Hardware Error]: 00000bc0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001381] [Hardware Error]: 00000bd0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001381] [Hardware Error]: 00000be0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001382] [Hardware Error]: 00000bf0: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001382] [Hardware Error]: 00000c00: ffffffff ffffffff ffffffff ffffffff ................ [ 1.001383] [Hardware Error]: 00000c10: ffffffff ffffffff ffffffff ffffffff ................ I'm running a Lenovo Thinkpad T14 I did find a similar unresolved bug: #1815711 ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-52-generic 5.4.0-52.57 ProcVersionSignature: Ubuntu 5.4.0-52.57-generic 5.4.65 Uname: Linux 5.4.0-52-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu27.10 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: julius 4711 F.... pulseaudio /dev/snd/controlC1: julius 4711 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Wed Oct 28 13:39:02 2020 InstallationDate: Installed on 2020-10-02 (26 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) MachineType: LENOVO 20S1S2H600 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu_zpweiv@/vmlinuz-5.4.0-52-generic root=ZFS=rpool/ROOT/ubuntu_zpweiv ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-5.4.0-52-generic N/A linux-backports-modules-5.4.0-52-generic N/A linux-firmware 1.187.3 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/26/2020 dmi.bios.vendor: LENOVO dmi.bios.version: N2XET23W (1.13 ) dmi.board.asset.tag: Not Available dmi.board.name: 20S1S2H600 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN2XET23W(1.13):bd08/26/2020:svnLENOVO:pn20S1S2H600:pvrThinkPadT14Gen1:rvnLENOVO:rn20S1S2H600:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T14 Gen 1 dmi.product.name: 20S1S2H600 dmi.product.sku: LENOVO_MT_20S1_BU_Think_FM_ThinkPad T14 Gen 1 dmi.product.version: ThinkPad T14 Gen 1 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1901894/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
