apport information ** Description changed:
On Ubuntu 20.04, running kernel 5.4.0-40-generic, the internal speakers, headphone jack, and mic do not work at all. No audio devices appear in the Sound settings or in pavucontrol. By appending options snd_hda_intel dmic_detect=0 to /etc/modprobe.d/alsa-base.conf, I can get audio working, but the microphone (unsuprisingly) does not work. Appending options snd-intel-dspcfg dsp_driver=1 to alsa_base.conf as the same effect as dmic_detect=0. Attempts to fix with option snd_hda_intel device=generic or deveice=auto have had no effect. This bug does NOT manifest on 5.4.0-26-generic, the kernel version featured on the 20.04 live media. After installation, and updating to 5.4.0-40-generic, the bug manifests on the next boot. Note that the audio hardware seems to work properly w/o workaround on a small (< 5%) percentage of boots, but I have been unable to reproduce this. With the workaround enabled, inxi -A gives Audio: Device-1: Intel Smart Sound Audio driver: snd_hda_intel Sound Server: ALSA v: k5.4.0-40-generic ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-40-generic 5.4.0-40.44 ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44 Uname: Linux 5.4.0-40-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jill 1374 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Sun Jul 5 13:32:58 2020 InstallationDate: Installed on 2020-07-03 (2 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: LENOVO 81YK ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-40-generic root=UUID=dc3e058d-42fc-4de4-b94a-749c1295dc68 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-40-generic N/A linux-backports-modules-5.4.0-40-generic N/A linux-firmware 1.187.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/18/2020 dmi.bios.vendor: LENOVO dmi.bios.version: DPCN40WW dmi.board.asset.tag: NO Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: IdeaPad 5 15IIL05 dmi.modalias: dmi:bvnLENOVO:bvrDPCN40WW:bd03/18/2020:svnLENOVO:pn81YK:pvrIdeaPad515IIL05:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrIdeaPad515IIL05: dmi.product.family: IdeaPad 5 15IIL05 dmi.product.name: 81YK dmi.product.sku: LENOVO_MT_81YK_BU_idea_FM_IdeaPad 5 15IIL05 dmi.product.version: IdeaPad 5 15IIL05 dmi.sys.vendor: LENOVO + --- + ProblemType: Bug + ApportVersion: 2.20.11-0ubuntu27.3 + Architecture: amd64 + AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: + CasperMD5CheckResult: skip + CurrentDesktop: ubuntu:GNOME + DistroRelease: Ubuntu 20.04 + InstallationDate: Installed on 2020-07-03 (5 days ago) + InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) + MachineType: LENOVO 81YK + Package: linux (not installed) + ProcEnviron: + TERM=xterm-256color + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + LANG=en_US.UTF-8 + SHELL=/bin/bash + ProcFB: 0 i915drmfb + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-40-generic root=UUID=dc3e058d-42fc-4de4-b94a-749c1295dc68 ro quiet splash vt.handoff=7 + ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44 + RelatedPackageVersions: + linux-restricted-modules-5.4.0-40-generic N/A + linux-backports-modules-5.4.0-40-generic N/A + linux-firmware 1.187.1 + Tags: wayland-session focal + Uname: Linux 5.4.0-40-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: 03/18/2020 + dmi.bios.vendor: LENOVO + dmi.bios.version: DPCN40WW + dmi.board.asset.tag: NO Asset Tag + dmi.board.name: LNVNB161216 + dmi.board.vendor: LENOVO + dmi.board.version: SDK0J40709 WIN + dmi.chassis.asset.tag: NO Asset Tag + dmi.chassis.type: 10 + dmi.chassis.vendor: LENOVO + dmi.chassis.version: IdeaPad 5 15IIL05 + dmi.modalias: dmi:bvnLENOVO:bvrDPCN40WW:bd03/18/2020:svnLENOVO:pn81YK:pvrIdeaPad515IIL05:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrIdeaPad515IIL05: + dmi.product.family: IdeaPad 5 15IIL05 + dmi.product.name: 81YK + dmi.product.sku: LENOVO_MT_81YK_BU_idea_FM_IdeaPad 5 15IIL05 + dmi.product.version: IdeaPad 5 15IIL05 + dmi.sys.vendor: LENOVO ** Attachment added: "AlsaInfo.txt" https://bugs.launchpad.net/bugs/1886341/+attachment/5390879/+files/AlsaInfo.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886341 Title: Kernel Regression between 5.4.0-26 and 5.4.0-40 causes laptop internal audio devices to fail to load w/o unacceptable workaround To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1886341/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
