Created attachment 252311 [details] 5 seconds of audio I've got a laptop with [ 15.257879] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC3227: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker [ 15.257881] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) [ 15.257882] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x21/0x0/0x0/0x0/0x0) [ 15.257883] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0 [ 15.257884] snd_hda_codec_realtek hdaudioC0D0: inputs: [ 15.257885] snd_hda_codec_realtek hdaudioC0D0: Mic=0x19 [ 15.257886] snd_hda_codec_realtek hdaudioC0D0: Internal Mic=0x12 [ 15.296600] input: HDA Intel PCH Mic as /devices/pci0000:00/0000:00:1f.3/sound/card0/input14 [ 15.296734] input: HDA Intel PCH Headphone as /devices/pci0000:00/0000:00:1f.3/sound/card0/input15 [ 15.296819] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17 [ 15.296902] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input18 [ 15.296983] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input19 However since some kernel 4.8.x version I cannot record any sound - it records empty sound. $ arecord -vv -fdat foo.wav Recording WAVE 'foo.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo Plug PCM: Linear conversion PCM (S32_LE) Its setup is: stream : CAPTURE access : RW_INTERLEAVED format : S16_LE subformat : STD channels : 2 rate : 48000 exact rate : 48000 (48000/1) msbits : 16 buffer_size : 16384 period_size : 1024 period_time : 21333 tstamp_mode : NONE tstamp_type : MONOTONIC period_step : 1 avail_min : 1024 period_event : 0 start_threshold : 1 stop_threshold : 16384 silence_threshold: 0 silence_size : 0 boundary : 4611686018427387904 Slave: Soft volume PCM Control: Digital Capture Volume min_dB: -30 max_dB: 30 resolution: 121 Its setup is: stream : CAPTURE access : MMAP_INTERLEAVED format : S32_LE subformat : STD channels : 2 rate : 48000 exact rate : 48000 (48000/1) msbits : 32 buffer_size : 16384 period_size : 1024 period_time : 21333 tstamp_mode : NONE tstamp_type : MONOTONIC period_step : 1 avail_min : 1024 period_event : 0 start_threshold : 1 stop_threshold : 16384 silence_threshold: 0 silence_size : 0 boundary : 4611686018427387904 Slave: Direct Snoop PCM Its setup is: stream : CAPTURE access : MMAP_INTERLEAVED format : S32_LE subformat : STD channels : 2 rate : 48000 exact rate : 48000 (48000/1) msbits : 32 buffer_size : 16384 period_size : 1024 period_time : 21333 tstamp_mode : NONE tstamp_type : MONOTONIC period_step : 1 avail_min : 1024 period_event : 0 start_threshold : 1 stop_threshold : 16384 silence_threshold: 0 silence_size : 0 boundary : 4611686018427387904 Hardware PCM card 0 'HDA Intel PCH' device 0 subdevice 0 Its setup is: stream : CAPTURE access : MMAP_INTERLEAVED format : S32_LE subformat : STD channels : 2 rate : 48000 exact rate : 48000 (48000/1) msbits : 32 buffer_size : 16384 period_size : 1024 period_time : 21333 tstamp_mode : ENABLE tstamp_type : MONOTONIC period_step : 1 avail_min : 1024 period_event : 0 start_threshold : 1 stop_threshold : 4611686018427387904 silence_threshold: 0 silence_size : 0 boundary : 4611686018427387904 appl_ptr : 0 hw_ptr : 0 All controls are set to their maximum/enabled values.
Created attachment 252321 [details] alsa-info
00:1f.3 Audio device [0403]: Intel Corporation Sunrise Point-LP HD Audio [8086:9d70] (rev 21) Subsystem: Hewlett-Packard Company Device [103c:80d1] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 32, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 295 Region 0: Memory at a1628000 (64-bit, non-prefetchable) [size=16K] Region 4: Memory at a1610000 (64-bit, non-prefetchable) [size=64K] Capabilities: [50] Power Management version 3 Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0-,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME- Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Address: 00000000fee003b8 Data: 0000 Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel, snd_soc_skl
Any updates on this bug? Any information you might need from me? It's been two weeks since I filed it.
Any updates on this bug? Any information you might need from me? It's been four weeks since I filed it.
Another week with no microphone input.
Unfortunately, it's a thing only the hardware owner can figure out. Just do trial-and-error of some more model options or apply the quirk line manually that may match with yours. Pinging on the bugzilla won't help.
(In reply to Takashi Iwai from comment #6) > Unfortunately, it's a thing only the hardware owner can figure out. Just do > trial-and-error of some more model options or apply the quirk line manually > that may match with yours. Pinging on the bugzilla won't help. Where's the list of these quirks? How can the be applied?
Take a look at sound/pci/hda/patch_realtek.c. There are lots of quirks, matching with PCI SSID.
patch_realtek.c weighs over 200KB and I don't think of myself as a programmer to understand how to work with this file to get the microphone back. Is there an utility to configure the HDA codec parameters in real time without recompilation? I remember you had something like that in the past.
The plot thickens. I tried using PulseAudio for a change and it actually detected two inputs while `arecord -l` sees just one. And one of those two inputs actually work just fine. However when I run plain ALSA there are no controls to switch between different inputs. It seems like PulseAudio sees (and manages to control) something other mixer applications (alsamixer/xfce4-mixer) don't see. I'm utterly confused. Please tell me what I'm overlooking.
I've fully switched to PA, so let's close this bug report as it's no longer relevant.