Hi, this is your Linux kernel regression tracker speaking.
I noticed a regression report in bugzilla.kernel.org. As many (most?) kernel developer don't keep an eye on it, I decided to forward it by mail. Quoting from https://bugzilla.kernel.org/show_bug.cgi?id=216861 :
Sergey 2022-12-29 10:07:51 UTC
Created attachment 303497 [details] pulseaudio.log
Sudden sound disappearance was reported for some laptops, e.g.
Acer Swift 3 SF314-59-78UR 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz
# lspci 0000:00:1f.3 Multimedia audio controller: Intel Corporation Tiger Lake-LP Smart Sound Technology Audio Controller (rev 20) Subsystem: Acer Incorporated [ALI] Device 148c Flags: bus master, fast devsel, latency 32, IRQ 197, IOMMU group 12 Memory at 601f270000 (64-bit, non-prefetchable) [size=16K] Memory at 601f000000 (64-bit, non-prefetchable) [size=1M] Capabilities: [50] Power Management version 3 Capabilities: [80] Vendor Specific Information: Len=14 <?> Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Kernel driver in use: sof-audio-pci
I am attaching the pulseaudio and dmesg logs
This bug started reproducing after updating the kernel from 5.10.156 to 5.10.157
Bisection revealed the commit being reverted:
c34db0d6b88b1da95e7ab3353e674f4f574cccee is the first bad commit commit c34db0d6b88b1da95e7ab3353e674f4f574cccee Author: Richard Fitzgerald rf@opensource.cirrus.com Date: Fri Nov 4 13:22:13 2022 +0000
ASoC: soc-pcm: Don't zero TDM masks in __soc_pcm_open() [ Upstream commit 39bd801d6908900e9ab0cdc2655150f95ddd4f1a ] The DAI tx_mask and rx_mask are set by snd_soc_dai_set_tdm_slot() and used by later code that depends on the TDM settings. So __soc_pcm_open() should not be obliterating those mask values.[...] Original bug report: https://bugzilla.altlinux.org/44690
See the ticket for more details.
BTW, let me use this mail to also add the report to the list of tracked regressions to ensure it's doesn't fall through the cracks:
#regzbot introduced: c34db0d6b88b1d https://bugzilla.kernel.org/show_bug.cgi?id=216861 #regzbot title: sound: asoc: sudden sound disappearance #regzbot ignore-activity
Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
P.S.: As the Linux kernel's regression tracker I deal with a lot of reports and sometimes miss something important when writing mails like this. If that's the case here, don't hesitate to tell me in a public reply, it's in everyone's interest to set the public record straight.