I have a worse bug : after setting alsamixer to 6ch and restarting pulseaudio, I have no rear sound and no dialog in 5.1 application (I select a 5.1 profile in pulseaudio + the sound section in Ubuntu setting pannel is unable to test the speakers (they remain silent while the system sound can actually be played in other manner). This occurs at least in Ubuntu 20.04 and 21.04
-- 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/1505584 Title: [Realtek ALC887-VD] Playback only through 2 channels by default Status in alsa-driver package in Ubuntu: Confirmed Status in pulseaudio package in Ubuntu: New Bug description: Ubuntu does not detect my 5.1 surround sound[0] by default. In order to get it detected, I have to do the following: 1) Open alsamixer 2) Change the "Channel Mode" setting from "2ch" to "6ch" (there is also a "4ch" setting) 3) `pulseaudio -k` I have to do this on every boot, as the "6ch" setting is not remembered. [0] My soundcard and sound system are 5.1, but I actually only have front left, center, right and the subwoofer. This shouldn't affect how Ubuntu acts at all (because it can't know what speakers I have plugged in to my subwoofer), but will mean that I can't report on whether or not rear channels are working as expected. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6 Uname: Linux 3.19.0-30-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: daniel 24007 F.... pulseaudio CurrentDesktop: Unity Date: Tue Oct 13 10:23:16 2015 EcryptfsInUse: Yes InstallationDate: Installed on 2014-07-30 (439 days ago) InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.3) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Green Line Out, Rear Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: Only some of outputs are working Title: [MS-7788, Realtek ALC887-VD, Green Line Out, Rear] Playback problem UpgradeStatus: Upgraded to vivid on 2015-08-24 (49 days ago) dmi.bios.date: 01/18/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V2.3 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: H61M-P31 (G3) (MS-7788) dmi.board.vendor: MSI dmi.board.version: 1.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MSI dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV2.3:bd01/18/2012:svnMSI:pnMS-7788:pvr1.0:rvnMSI:rnH61M-P31(G3)(MS-7788):rvr1.0:cvnMSI:ct3:cvr1.0: dmi.product.name: MS-7788 dmi.product.version: 1.0 dmi.sys.vendor: MSI modified.conffile..etc.modprobe.d.alsa.base.conf: [modified] mtime.conffile..etc.modprobe.d.alsa.base.conf: 2015-08-05T11:15:16.899686 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1505584/+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
