The legacy flag only works when you also set a model, for me the model
dell-headset-multi works. You have to shutdown the system completely
after setting these options. When you have done that you should be able
to reboot without locking up. The logs will still contain errors though.

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https://bugs.launchpad.net/bugs/2027848

Title:
  Soft-lockup caused by snd_hda_intel

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I report this bug the the 6.5rc1 kernel.
  Kernel before 6.5 hang even before there is any logging going on.
  The problem is gone when i blacklist snd_hda_core.

  jul 15 09:02:52 nick-HP-Laptop-15s-fq4xxx kernel: watchdog: BUG: soft lockup 
- CPU#1 stuck for 78s! [kworker/1:1:90]
  jul 15 09:02:52 nick-HP-Laptop-15s-fq4xxx kernel: Modules linked in: 
snd_seq_dummy snd_hrtimer rfcomm cmac algif_hash algif_skcipher af_alg bnep 
snd_sof_pci_intel_tgl snd_sof_intel_hda_common soundwire_>
  jul 15 09:03:07 nick-HP-Laptop-15s-fq4xxx kernel:  hp_wmi snd_timer videodev 
input_leds spi_nor rapl cec sparse_keymap cfg80211 intel_cstate wmi_bmof 
serio_raw platform_profile videobuf2_common snd mei_>
  jul 15 09:03:07 nick-HP-Laptop-15s-fq4xxx kernel: CPU: 1 PID: 90 Comm: 
kworker/1:1 Tainted: G     U  W    L     6.5.0-060500rc1-generic #202307092131
  jul 15 09:03:07 nick-HP-Laptop-15s-fq4xxx kernel: Hardware name: HP HP Laptop 
15s-fq4xxx/89BC, BIOS F.31 03/25/2023
  jul 15 09:03:07 nick-HP-Laptop-15s-fq4xxx kernel: Workqueue: events 
azx_probe_work [snd_hda_intel]
  jul 15 09:03:07 nick-HP-Laptop-15s-fq4xxx kernel: RIP: 
0010:_raw_spin_unlock_irq+0x15/0x50
  jul 15 09:03:07 nick-HP-Laptop-15s-fq4xxx kernel: Code: cc cc 0f 1f 00 90 90 
90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 55 48 89 e5 c6 07 00 
0f 1f 00 fb 0f 1f 44 00 00 <65> ff 0d 5c 61 52 >
  jul 15 09:03:07 nick-HP-Laptop-15s-fq4xxx kernel: RSP: 0018:ffffb450c05dbb30 
EFLAGS: 00000246
  jul 15 09:03:07 nick-HP-Laptop-15s-fq4xxx kernel: RAX: 0000000000000007 RBX: 
0000000000000007 RCX: 0000000000000000

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