Hello, I have Acer Aspire A515-56-57XR with alc255 and have similar issue, managed to solve it for now with at a cost of losing functionality of internal microphone.
My issue was the headphones/micophone always appeared plugged in and even after actually plugging it in had to manually switch it, also the earphone microphone didn't work at all. After months someone sent me a fix on acer community forums. I will send that fix here and hope it works for you. This fix will cause internal digital microphone to stop showing completely. Add these to end of /etc/modprobe.d/alsa-base.conf # Headset mic fix options snd-hda-intel dmic_detect=0 options snd-hda-intel model=alc255-acer After, reboot when you plug in the earphone/headphone a pop up will show choose anything, now your external microphone should start working. Also, when you unplug earphone/headphone it should automatically switch to internal and hide external ones as well. The pop up will show up every time you plug in to fix this use gnome extension called Remove Audio Device Selection Dialog. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1918142 Title: Headphone microphone doesn't work - ALC255 Status in linux package in Ubuntu: Confirmed Bug description: Hello, The headphone microphone is not working : I cannot register any sound from it. Driver is alc255 and the laptop is an Acer SF314-42. I am not sure what else I should post :S Best --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu50.5 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 20.10 InstallationDate: Installed on 2021-03-08 (0 days ago) InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022) MachineType: Acer Swift SF314-42 Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-44-generic root=UUID=cffa8cec-df4e-4dca-94ba-c08d71257664 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.8.0-44.50-generic 5.8.18 RelatedPackageVersions: linux-restricted-modules-5.8.0-44-generic N/A linux-backports-modules-5.8.0-44-generic N/A linux-firmware 1.190.3 Tags: groovy Uname: Linux 5.8.0-44-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 08/26/2020 dmi.bios.release: 1.7 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V1.07 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: Kona_RN dmi.board.vendor: RO dmi.board.version: V1.07 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.07 dmi.ec.firmware.release: 1.5 dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.07:bd08/26/2020:br1.7:efr1.5:svnAcer:pnSwiftSF314-42:pvrV1.07:rvnRO:rnKona_RN:rvrV1.07:cvnAcer:ct10:cvrV1.07: dmi.product.family: Swift 3 dmi.product.name: Swift SF314-42 dmi.product.sku: 0000000000000000 dmi.product.version: V1.07 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1918142/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
