Confirmed, my system boots fine when that second monitor isn't plugged
in. I removed the bluetooth driver as well, but that didn't fix it.
This is the adapter I'm using (I believe):
https://us.amazon.com/NiaoChao-Adapter-Charging-Compatible-MacBook/dp/B08CRXD22M
I have a bunch of USBC / HDMI adapters around, so maybe other ones won't
halt the boot.
The kernel I'm running:
5.13.0-41-generic #46~20.04.1-Ubuntu SMP Wed Apr 20 13:16:21 UTC 2022 x86_64
x86_64 x86_64 GNU/Linux
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https://bugs.launchpad.net/bugs/1947618
Title:
[i915] CPU locks up on Ubuntu 21.10 boot when 2 displays are connected
Status in linux package in Ubuntu:
Confirmed
Bug description:
I've updated from 21.04 to 21.10 and that bug has appeared in kernel
5.13.0-19. When 2 displays are connected simulateneously (DP and HDMI)
before graphics server is started the kernel hangs up and reports that
cpu is locked up. Boot with 5.11 kernel doesn't produce that problem.
PC is based on i7-11700 CPU.
Here is part of kernel log with call trace:
кас 18 19:36:24 MWU-2197 kernel: fb0: switching to inteldrmfb from EFI VGA
кас 18 19:36:24 MWU-2197 kernel: Console: switching to colour dummy device
80x25
кас 18 19:36:24 MWU-2197 kernel: i915 :00:02.0: vgaarb: deactivate vga
console
кас 18 19:36:24 MWU-2197 kernel: snd_hda_intel :00:1f.3: enabling device
( -> 0002)
кас 18 19:36:24 MWU-2197 kernel: i915 :00:02.0: vgaarb: changed VGA
decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem
кас 18 19:36:24 MWU-2197 kernel: mei_hdcp
:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound :00:02.0 (ops
i915_hdcp_component_ops [i915])
кас 18 19:36:24 MWU-2197 kernel: i915 :00:02.0: [drm] Finished loading
DMC firmware i915/rkl_dmc_ver2_02.bin (v2.2)
кас 18 19:36:25 MWU-2197 kernel: Bluetooth: hci0: BCM: chip id 63
кас 18 19:36:25 MWU-2197 kernel: Bluetooth: hci0: BCM: features 0x07
кас 18 19:36:25 MWU-2197 kernel: Bluetooth: hci0: Broadcom Bluetooth Device
кас 18 19:36:25 MWU-2197 kernel: Bluetooth: hci0: BCM20702A1 (001.002.014)
build 1467
кас 18 19:36:25 MWU-2197 kernel: Bluetooth: hci0: BCM20702A1
'brcm/BCM20702A1-0b05-17cb.hcd' Patch
кас 18 19:36:25 MWU-2197 kernel: Bluetooth: hci0: Broadcom Bluetooth Device
кас 18 19:36:25 MWU-2197 kernel: Bluetooth: hci0: BCM20702A1 (001.002.014)
build 1467
кас 18 19:36:51 MWU-2197 kernel: watchdog: BUG: soft lockup - CPU#0 stuck for
26s! [systemd-udevd:461]
кас 18 19:36:51 MWU-2197 kernel: Modules linked in: snd_sof_pci_intel_tgl
snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation
soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof
snd_soc_hdac_hda snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi
soundwire_bus ledtrig_audio snd_soc_core snd_compress ac97_bus
snd_pcm_dmaengine snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi
snd_hda_codec nls_iso8859_1 snd_hda_core fjes(-) mei_hdcp intel_rapl_msr
i915(+) snd_hwdep snd_pcm intel_rapl_common snd_seq_midi snd_seq_midi_event
btusb x86_pkg_temp_thermal snd_rawmidi intel_powerclamp btrtl drm_kms_helper
btbcm snd_seq coretemp btintel crct10dif_pclmul snd_seq_device
ghash_clmulni_intel cec snd_timer bluetooth rc_core aesni_intel snd crypto_simd
i2c_algo_bit joydev cryptd fb_sys_fops mei_me ecdh_generic syscopyarea
input_leds ecc sysfillrect intel_cstate eeepc_wmi wmi_bmof efi_pstore ee1004
soundcore sysimgblt mei sch_fq_codel mac_hid acpi_pad acpi_tad msr parport_pc
ppdev
кас 18 19:36:51 MWU-2197 kernel: lp parport drm ip_tables x_tables autofs4
hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid mfd_aaeon asus_wmi
sparse_keymap intel_lpss_pci crc32_pclmul nvme xhci_pci i2c_i801 ahci
intel_lpss e1000e nvme_core i2c_smbus libahci idma64 xhci_pci_renesas wmi video
pinctrl_tigerlake
кас 18 19:36:51 MWU-2197 kernel: CPU: 0 PID: 461 Comm: systemd-udevd Not
tainted 5.13.0-19-generic #19-Ubuntu
кас 18 19:36:51 MWU-2197 kernel: Hardware name: ASUS System Product
Name/PRIME B560M-A, BIOS 1017 07/12/2021
кас 18 19:36:51 MWU-2197 kernel: RIP:
0010:skl_commit_modeset_enables+0x1b1/0x540 [i915]
кас 18 19:36:51 MWU-2197 kernel: Code: 39 d8 7e 5d 49 8b 75 20 83 c3 01 8d 43
ff 48 98 48 8d 0c c5 00 00 00 00 48 29 c1 48 8d 04 ce 4c 8b 20 4c 8b 50 10 4c
8b 40 18 <4d> 85 e4 74 1a 41 8b 8c 24 f0 03 00 00 41 0f b6 c7 4c 89 55 b8 48
кас 18 19:36:51 MWU-2197 kernel: RSP: 0018:b89600d6b7b8 EFLAGS: 0202
кас 18 19:36:51 MWU-2197 kernel: RAX: 97474f0867b8 RBX: 0002
RCX: 0007
кас 18 19:36:51 MWU-2197 kernel: RDX: 97474434 RSI: 97474f086780
RDI: 974748c5ef3c
кас 18 19:36:51 MWU-2197 kernel: RBP: b89600d6b828 R08: 974749b72000
R09: 0800
кас 18 19:36:51 MWU-2197 kernel: R10: 974741e22000 R11: 97474f086828
R12: 974752d1e000
