Hi, this is your Linux kernel regression tracker.

I noticed a regression report in bugzilla.kernel.org that afaics nobody acted upon since it was reported about a week ago, that's why I decided to forward it to the lists and the maintainers. To quote from https://bugzilla.kernel.org/show_bug.cgi?id=215711:

Created attachment 300588 [details] SND_HDA_* excrept from kernel config

On PCI device discovery the Intel HDA codec doesn't bind to appropriate codec (if that is the correct term). The device codec (Conexant) is loaded, but sound doesn't work. Reloading the main module (snd_hda_intel) fixes the issue:

$ echo 1 > /sys/bus/pci/devices/0000:00:1b.0/remove

$ lsmod | sort Module Size Used by configs 45056 0 e1000e 225280 0 grace 16384 1 lockd irqbypass 16384 1 kvm iwlwifi 274432 0 kvm 569344 1 kvm_intel kvm_intel 229376 0 lockd 98304 1 nfs mei 90112 1 mei_me mei_me 28672 0 nfs 184320 3 nfsv4 nfsv4 380928 2 sunrpc 274432 9 nfsv4,lockd,nfs uvcvideo 110592 0 videobuf2_common 45056 4 videobuf2_vmalloc,videobuf2_v4l2,uvcvideo,videobuf2_memops videobuf2_memops 16384 1 videobuf2_vmalloc videobuf2_v4l2 24576 1 uvcvideo videobuf2_vmalloc 16384 1 uvcvideo

$ echo 1 > /sys/bus/pci/rescan # dmesg output [ 9218.563134] pci 0000:00:1b.0: [8086:3b56] type 00 class 0x040300 [ 9218.563178] pci 0000:00:1b.0: reg 0x10: [mem 0xc0004000-0xc0007fff 64bit] [ 9218.563344] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold [ 9218.563818] pci 0000:00:1b.0: BAR 0: assigned [mem 0xc0004000-0xc0007fff 64bit] [ 9218.563846] pci 0000:00:1e.0: PCI bridge to [bus 0e] [ 9218.598927] snd_hda_intel 0000:00:1b.0: bound 0000:00:02.0 (ops 0xffffffff824a44e0) [ 9218.609798] snd_hda_intel 0000:00:1b.0: Cannot probe codecs, giving up

$ lsmod | sort Module Size Used by configs 45056 0 e1000e 225280 0 grace 16384 1 lockd irqbypass 16384 1 kvm iwlwifi 274432 0 kvm 569344 1 kvm_intel kvm_intel 229376 0 lockd 98304 1 nfs mei 90112 1 mei_me mei_me 28672 0 nfs 184320 3 nfsv4 nfsv4 380928 2 snd 77824 7 snd_hda_codec_generic,snd_hda_codec_conexant,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_timer,snd_pcm snd_hda_codec 118784 3 snd_hda_codec_generic,snd_hda_codec_conexant,snd_hda_intel snd_hda_codec_conexant 20480 0 snd_hda_codec_generic 77824 1 snd_hda_codec_conexant snd_hda_core 65536 4 snd_hda_codec_generic,snd_hda_codec_conexant,snd_hda_intel,snd_hda_codec snd_hda_intel 36864 0 snd_hwdep 16384 1 snd_hda_codec snd_intel_dspcfg 16384 1 snd_hda_intel snd_pcm 110592 3 snd_hda_intel,snd_hda_codec,snd_hda_core snd_timer 32768 1 snd_pcm soundcore 16384 1 snd sunrpc 274432 9 nfsv4,lockd,nfs uvcvideo 110592 0 videobuf2_common 45056 4 videobuf2_vmalloc,videobuf2_v4l2,uvcvideo,videobuf2_memops videobuf2_memops 16384 1 videobuf2_vmalloc videobuf2_v4l2 24576 1 uvcvideo videobuf2_vmalloc 16384 1 uvcvideo

$ modprobe -rv snd_hda_intel; modprobe -v snd_hda_intel # dmesg output [ 9230.886362] snd_hda_intel 0000:00:1b.0: bound 0000:00:02.0 (ops 0xffffffff824a44e0) [ 9230.895721] snd_hda_codec_conexant hdaudioC0D0: CX20585: BIOS auto-probing. [ 9230.896677] snd_hda_codec_conexant hdaudioC0D0: autoconfig for CX20585: line_outs=1 (0x1f/0x0/0x0/0x0/0x0) type:speaker [ 9230.896691] snd_hda_codec_conexant hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) [ 9230.896700] snd_hda_codec_conexant hdaudioC0D0: hp_outs=2 (0x1c/0x19/0x0/0x0/0x0) [ 9230.896707] snd_hda_codec_conexant hdaudioC0D0: mono: mono_out=0x0 [ 9230.896713] snd_hda_codec_conexant hdaudioC0D0: inputs: [ 9230.896718] snd_hda_codec_conexant hdaudioC0D0: Internal Mic=0x23 [ 9230.896724] snd_hda_codec_conexant hdaudioC0D0: Mic=0x1b [ 9230.896729] snd_hda_codec_conexant hdaudioC0D0: Dock Mic=0x1a [ 9230.908437] snd_hda_codec_generic hdaudioC0D3: autoconfig for Generic: line_outs=0 (0x0/0x0/0x0/0x0/0x0) type:line [ 9230.908454] snd_hda_codec_generic hdaudioC0D3: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) [ 9230.908461] snd_hda_codec_generic hdaudioC0D3: hp_outs=0 (0x0/0x0/0x0/0x0/0x0) [ 9230.908468] snd_hda_codec_generic hdaudioC0D3: mono: mono_out=0x0 [ 9230.908473] snd_hda_codec_generic hdaudioC0D3: dig-out=0x5/0x0 [ 9230.908477] snd_hda_codec_generic hdaudioC0D3: inputs: [ 9230.916063] input: HDA Intel MID Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input52 [ 9230.916216] input: HDA Intel MID Dock Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input53 [ 9230.916353] input: HDA Intel MID Dock Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input54 [ 9230.919563] input: HDA Intel MID Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input55 [ 9230.919727] input: HDA Intel MID HDMI as /devices/pci0000:00/0000:00:1b.0/sound/card0/input56

$ lsmod | sort Module Size Used by configs 45056 0 e1000e 225280 0 grace 16384 1 lockd irqbypass 16384 1 kvm iwlwifi 274432 0 kvm 569344 1 kvm_intel kvm_intel 229376 0 lockd 98304 1 nfs mei 90112 1 mei_me mei_me 28672 0 nfs 184320 3 nfsv4 nfsv4 380928 2 snd 77824 7 snd_hda_codec_generic,snd_hda_codec_conexant,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_timer,snd_pcm snd_hda_codec 118784 3 snd_hda_codec_generic,snd_hda_codec_conexant,snd_hda_intel snd_hda_codec_conexant 20480 1 snd_hda_codec_generic 77824 2 snd_hda_codec_conexant snd_hda_core 65536 4 snd_hda_codec_generic,snd_hda_codec_conexant,snd_hda_intel,snd_hda_codec snd_hda_intel 36864 0 snd_hwdep 16384 1 snd_hda_codec snd_intel_dspcfg 16384 1 snd_hda_intel snd_pcm 110592 3 snd_hda_intel,snd_hda_codec,snd_hda_core snd_timer 32768 1 snd_pcm soundcore 16384 1 snd sunrpc 274432 9 nfsv4,lockd,nfs uvcvideo 110592 0 videobuf2_common 45056 4 videobuf2_vmalloc,videobuf2_v4l2,uvcvideo,videobuf2_memops videobuf2_memops 16384 1 videobuf2_vmalloc videobuf2_v4l2 24576 1 uvcvideo videobuf2_vmalloc 16384 1 uvcvideo

5.15.29, have observed it already at least on 5.10.27, HW is ThinkPad x201 (x220 as well). I'm marking it as regression, since it used to work in the distant past (5.4-ish at least iirc)

Could somebody take a look into this? Or was this discussed somewhere else already? Or even fixed?

Anyway, to get this tracked:

#regzbot introduced: v5.4..v5.10 #regzbot from: Petr Cerny bugzilla@black-net.org #regzbot title: snd: snd_hda_intel not binding to codec #regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215711

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)

P.S.: As the Linux kernel's regression tracker I'm getting a lot of reports on my table. I can only look briefly into most of them and lack knowledge about most of the areas they concern. I thus unfortunately will sometimes get things wrong or miss something important. I hope that's not the case here; if you think it is, don't hesitate to tell me in a public reply, it's in everyone's interest to set the public record straight.