I don't have problems running Ubuntu 20.04 LTS with (original, non-HWE kernel) 5.4 series kernel these days. Granted, I've probably indeed modified the default.pa as indicated above, and have had a state file which I've restored - but the kernel is default, and the audio works fine without any manual state restores on every boot and I can switch between internal and HDMI audio fine.
I've mostly used the HDMI audio though in recent years so I cannot say if there would be problems with internal audio in prolonged use. The reason for not upgrading beyond 5.4 kernel used to be that 5.8 kernel regressed with these low tier Intel graphics, but I recall that was fixed in later ones so the current Ubuntu 20.04 HWE kernel (5.11) that comes on eg 20.04.3 installation media might be worth trying again if wanting excitement to life. It'd be nice to experiment with out-of-the-box functionality too, which would be likely easiest done with live USB sticks. Overall, I think there might not be any kernel bug left here, only userspace ones. Although it might have easily regressed in more recent kernels given the low amount of users. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1609750 Title: Audio not working on Acer Chromebook R11 Status in linux: Confirmed Status in linux package in Ubuntu: In Progress Status in pulseaudio package in Ubuntu: Invalid Bug description: Audio is not working at all on Acer Chromebook R11 (codename CYAN). It's a Intel Braswell platform. snd_hda_intel messages seem normal, but Pulseaudio does not detect sound hardware. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: pulseaudio 1:9.0-1.1ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-33.52-generic 4.4.15 Uname: Linux 4.4.0-33-generic x86_64 ApportVersion: 2.20.3-0ubuntu2 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/hwC0D2', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: Unity Date: Thu Aug 4 14:12:03 2016 InstallationDate: Installed on 2016-07-22 (13 days ago) InstallationMedia: PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: pulseaudio Symptom: audio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/20/2016 dmi.bios.vendor: coreboot dmi.chassis.type: 3 dmi.chassis.vendor: GOOGLE dmi.modalias: dmi:bvncoreboot:bvr:bd05/20/2016:svnGOOGLE:pnCyan:pvr1.0:cvnGOOGLE:ct3:cvr: dmi.product.name: Cyan dmi.product.version: 1.0 dmi.sys.vendor: GOOGLE --- ApportVersion: 2.20.3-0ubuntu2 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/hwC0D2', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: Unity DistroRelease: Ubuntu 16.10 HibernationDevice: RESUME=UUID=53fe7902-c347-4ff8-945d-a3e3de773a08 InstallationDate: Installed on 2016-07-22 (13 days ago) InstallationMedia: Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 8087:0a2a Intel Corp. Bus 001 Device 002: ID 0bda:57cf Realtek Semiconductor Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: GOOGLE Cyan Package: linux-image-4.4.0-33-generic 4.4.0-33.52 PackageArchitecture: amd64 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-33-generic root=UUID=742e4082-264a-4459-93df-9ec07b41d5e8 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.4.0-33.52-generic 4.4.15 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.4.0-33-generic N/A linux-backports-modules-4.4.0-33-generic N/A linux-firmware 1.159 Tags: yakkety Uname: Linux 4.4.0-33-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/20/2016 dmi.bios.vendor: coreboot dmi.chassis.type: 3 dmi.chassis.vendor: GOOGLE dmi.modalias: dmi:bvncoreboot:bvr:bd05/20/2016:svnGOOGLE:pnCyan:pvr1.0:cvnGOOGLE:ct3:cvr: dmi.product.name: Cyan dmi.product.version: 1.0 dmi.sys.vendor: GOOGLE To manage notifications about this bug go to: https://bugs.launchpad.net/kernel/+bug/1609750/+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