Could you ask the Acer what is the hardware design for the internal mic on this machine? Does the internal mic connect to the realtek codec or directly connect to the DSP in the PCH?
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1793410 Title: [Acer Swift SF315-52, Realtek ALC256, Mic, Internal] Internal microphone not working Status in alsa-driver package in Ubuntu: Confirmed Bug description: Recently bought a new Acer Swift 3 laptop and installed Ubuntu 18.04 on it. Everything works except the internal microphone. I have also tested with an external microphone and this didn't work either. I have worked my way through all the suggested solutions I could find, including trying to reconfigure the pins using hdajacketask. In pavucontrol I have options for Internal Microphone and Microphone (unplugged) but the internal mic only captures static noise. The latest HD-Audio Codec-Specific Models has configurations for alc255-acer and alc256 for some other models, but setting options snd- hda-intel model=MODEL in /etc/modprobe.d/alsa-base.conf does not solve the issue with any of these. Some info - lspci | grep -I audio: 00:1f.3 Multimedia audio controller: Intel Corporation Sunrise Point- LP HD Audio (rev 21) cat /proc/asound/cards: 0 [PCH ]: HDA-Intel - HDA Intel PCH HDA Intel PCH at 0xdf1a8000 irq 127 dmesg | grep snd: [ 3.944593] snd_hda_core: loading out-of-tree module taints kernel. [ 3.956337] snd_soc_skl: Unknown symbol snd_hdac_display_power (err 0) [ 3.956422] snd_soc_skl: Unknown symbol snd_hdac_i915_exit (err 0) [ 4.000880] snd_hda_intel 0000:00:1f.3: Probing card using HDA DKMS, version 0.201808050301~ubuntu18.04.1 [ 4.000895] snd_hda_intel 0000:00:1f.3: enabling device (0000 -> 0002) [ 4.013061] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC256: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker [ 4.013063] snd_hda_codec_realtek hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) [ 4.013065] snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x21/0x0/0x0/0x0/0x0) [ 4.013066] snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0 [ 4.013066] snd_hda_codec_realtek hdaudioC0D0: inputs: [ 4.013068] snd_hda_codec_realtek hdaudioC0D0: Mic=0x18 [ 4.013069] snd_hda_codec_realtek hdaudioC0D0: Internal Mic=0x12 info on node 12 from cat /proc/asound/card*/codec\#*: Node 0x12 [Pin Complex] wcaps 0x40040b: Stereo Amp-In Control: name="Internal Mic Boost Volume", index=0, device=0 ControlAmp: chs=3, dir=In, idx=0, ofs=0 Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: [0x02 0x02] Pincap 0x00000020: IN Pin Default 0x40000000: [N/A] Line Out at Ext N/A Conn = Unknown, Color = Unknown DefAssociation = 0x0, Sequence = 0x0 Pin-ctls: 0x20: IN Power states: D0 D1 D2 D3 EPSS Power: setting=D0, actual=D0 Let me know if you need any other information. James --- Tags: bionic Uname: Linux 4.15.0-34-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) _MarkForUpload: True dmi.bios.date: 06/22/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V1.04 dmi.board.asset.tag: Default string dmi.board.name: Erdinger_KL dmi.board.vendor: KBL dmi.board.version: V1.04 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.04 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.04:bd06/22/2018:svnAcer:pnSwiftSF315-52:pvrV1.04:rvnKBL:rnErdinger_KL:rvrV1.04:cvnAcer:ct10:cvrV1.04: dmi.product.family: Swift 3 dmi.product.name: Swift SF315-52 dmi.product.version: V1.04 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1793410/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
