After a warm boot, the laptop will experience CPU soft lockups: watchdog: BUG: soft lockup - CPU#2 stuck for 26s! [kworker/2:1:92] ... kernel: CPU: 2 PID: 92 Comm: kworker/2:1 Tainted: G W 6.5.0+ #6 kernel: Hardware name: HP HP Laptop 15s-fq4xxx/89BC, BIOS F.32 07/04/2023 kernel: Workqueue: events sof_probe_work [snd_sof] kernel: RIP: 0010:_raw_spin_unlock_irq+0x15/0x50 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 4c 86 56 5c 74 10 5d 31 c0 31 d2 31 c9 31 f6 31 ff c3 cc kernel: RSP: 0018:ffffa645005ebac0 EFLAGS: 00000246 kernel: RAX: 0000000000000007 RBX: 0000000000000007 RCX: 0000000000000000 kernel: RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff98ea47049cd8 kernel: RBP: ffffa645005ebac0 R08: 0000000000000000 R09: 0000000000000000 kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff98ea47049830 kernel: R13: 00000000401f0005 R14: ffff98ea47049cd8 R15: ffff98ea47049840 kernel: FS: 0000000000000000(0000) GS:ffff98ebb7a80000(0000) knlGS:0000000000000000 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kernel: CR2: 00007fecb22282a8 CR3: 000000010afa2001 CR4: 0000000000770ee0 kernel: PKRU: 55555554 kernel: Call Trace: kernel: <IRQ> kernel: ? show_regs+0x72/0x90 kernel: ? watchdog_timer_fn+0x1f7/0x260 kernel: ? __pfx_watchdog_timer_fn+0x10/0x10 kernel: ? __hrtimer_run_queues+0x10e/0x2a0 kernel: ? clockevents_program_event+0xb2/0x140 kernel: ? hrtimer_interrupt+0x101/0x250 kernel: ? __sysvec_apic_timer_interrupt+0x61/0x140 kernel: ? sysvec_apic_timer_interrupt+0x91/0xb0 kernel: </IRQ> kernel: <TASK> kernel: ? asm_sysvec_apic_timer_interrupt+0x1b/0x20 kernel: ? _raw_spin_unlock_irq+0x15/0x50 kernel: snd_hdac_bus_send_cmd+0xcb/0x110 [snd_hda_core] kernel: snd_hdac_bus_exec_verb_unlocked+0x78/0x1b0 [snd_hda_core] kernel: snd_hdac_bus_exec_verb+0x3e/0x70 [snd_hda_core] kernel: snd_hdac_exec_verb+0x43/0x60 [snd_hda_core] kernel: hda_reg_read+0x1de/0x270 [snd_hda_core] kernel: __snd_hdac_regmap_read_raw+0x7e/0xf0 [snd_hda_core] kernel: snd_hdac_regmap_read_raw+0x10/0x20 [snd_hda_core] kernel: snd_hdac_device_init+0x21f/0x460 [snd_hda_core] kernel: snd_hda_codec_device_init+0xad/0x290 [snd_hda_codec] kernel: ? devres_add+0x6f/0xf0 kernel: hda_codec_probe_bus+0x181/0x310 [snd_sof_intel_hda] kernel: hda_dsp_probe+0x476/0x870 [snd_sof_intel_hda_common] kernel: sof_probe_work+0x31/0x470 [snd_sof] kernel: process_one_work+0x229/0x450 kernel: worker_thread+0x50/0x3f0 kernel: ? __pfx_worker_thread+0x10/0x10 kernel: kthread+0xf4/0x130 kernel: ? __pfx_kthread+0x10/0x10 kernel: ret_from_fork+0x43/0x70 kernel: ? __pfx_kthread+0x10/0x10 kernel: ret_from_fork_asm+0x1b/0x30 kernel: </TASK> Turning on audio debug shows: cold boot (all entries below have the same timestamp) kernel: snd_sof_intel_hda:hda_codec_probe: sof-audio-pci-intel-tgl 0000:00:1f.3: HDA codec #0 probed OK: response: 10ec0236 kernel: snd_sof_intel_hda:request_codec_module: hdaudio ehdaudio0D0: loading codec module: hdaudio:v10EC0236r00100002a01 kernel: snd_sof_intel_hda:hda_codec_probe: sof-audio-pci-intel-tgl 0000:00:1f.3: HDA codec #2 probed OK: response: 80862812 kernel: snd_sof_intel_hda:request_codec_module: hdaudio ehdaudio0D2: loading codec module: hdaudio:v80862812r00100000a01 warm boot kernel: snd_sof_intel_hda:hda_codec_probe: sof-audio-pci-intel-tgl 0000:00:1f.3: HDA codec #0 probed OK: response: fe05 <then nothing for 26 sec until> kernel: watchdog: BUG: soft lockup - CPU#2 stuck for 26s! [kworker/2:1:92] Laptop is a HP 15s-fq4011TU 11th Gen (Tiger Lake) Intel with (from lspci) Multimedia audio controller: Intel Corporation Tiger Lake-LP Smart Sound Technology Audio Controller (rev 30). Ubuntu bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2027848 provides further background.
Also confirmed for HP 250 G9 (6S774EA) on ALT Linux kernels are 6.5.8, 6.1.57, 5.10.198 (which are basically usptream stable/lts branches). Machine: Type: Laptop System: HP product: HP 250 15.6 inch G9 Notebook PC v: Type1ProductConfigId Audio: Device-1: Intel Alder Lake PCH-P High Definition Audio driver: N/A Downstream bug report for the record https://bugzilla.altlinux.org/48171
Same problem here: I is caused by a code change in patch_realtek.c I have a working kernel based on 6.8.7 here: https://github.com/nicktelindert/linux I reverted this commit manually: https://github.com/torvalds/linux/commit/5aec989 This fixed the issues for ALC236. I am not sure if it breaks other systems though.