Update: in my case I took the case with Dell support, they changed some parts, which included obviously the internal microphone, but also the trackpad (they are positioned close to each other physically. That fixed the issue, the sound is good now. In my case the status 'Invalid' is correct, it was a hardware issue.
-- 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/1894833 Title: [Dell XPS 15 7590, Realtek ALC3266, Mic, Internal] Lots of background noise on internal microphone Status in alsa-driver package in Ubuntu: Invalid Bug description: Problem: Lots of background noise on the internal microphone. If I record it in Audacity it seems that most of the noise is in the Left- Front channel. The Right-Front channel is still noisy/bad quality, but not as bad. Hardware: Dell XPS 15 7590 laptop (basically 2019 model) OS: Ubuntu 20.04 fresh/plain installation: $ lsb_release -rd Description: Ubuntu 20.04.1 LTS Release: 20.04 Other tests: - If I use a external/USB headsets+microphone sound is fine - If I boot from Ubuntu 20.04 live USB it still has the problem - Tested with other versions/distributions, but it still has the problem: ubuntu-19.10-desktop-amd64, linuxmint-20-cinnamon-64bit, Fedora-Workstation-Live-x86_64-32-1.6, xubuntu-20.04.1-desktop-amd64, pop-os_20.04_amd64_nvidia_13, ubuntu-18.04.5-desktop-amd64 - I tried many steps involving changing config files e.g. https://wiki.ubuntu.com/Audio/PositionReporting + reboot, none fixed the problem, reverted the config files back after every change ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 5.4.0-47.51-generic 5.4.55 Uname: Linux 5.4.0-47-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mircea 1400 F.... pulseaudio /dev/snd/pcmC0D0c: mircea 1400 F...m pulseaudio /dev/snd/pcmC0D0p: mircea 1400 F...m pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Tue Sep 8 12:33:31 2020 InstallationDate: Installed on 2020-09-06 (2 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaRecordingTest: ALSA recording test through plughw:PCH successful Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Mic, Internal Symptom_PulseAudioRecordingTest: PulseAudio recording test through plughw:PCH successful Symptom_Type: High background noise, or volume is too low Title: [XPS 15 7590, Realtek ALC3266, Mic, Internal] Background noise or low volume UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/03/2020 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.8.1 dmi.board.name: 0VYV0G dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.8.1:bd07/03/2020:svnDellInc.:pnXPS157590:pvr:rvnDellInc.:rn0VYV0G:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 15 7590 dmi.product.sku: 0905 dmi.sys.vendor: Dell Inc. mtime.conffile..etc.modprobe.d.alsa-base.conf: 2020-09-08T11:02:41.506649 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1894833/+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