apport information ** Attachment added: "ProcCpuinfoMinimal.txt" https://bugs.launchpad.net/bugs/1961998/+attachment/5583400/+files/ProcCpuinfoMinimal.txt
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-utils in Ubuntu. https://bugs.launchpad.net/bugs/1961998 Title: alsamixer: volume controls are assigned to wrong channels Status in alsa-utils package in Ubuntu: Expired Bug description: I have tested the alsamixer with 2 different 8ch usb sound cards (UAC2 compatible) and the assignment of the volume controls to the respective channel is partly wrong on both cards. The volume control for rear changes the volume of the center and subwoofer/LFE and the volume control for "Center" and "Woofer" changes the volume of the rear speakers. According to the usb audio class 2 specification, chapter "4.1 Audio Channel Cluster Descriptor", the volume controls index must be (for a 8ch sound card): 1 = FL 2 = FR 3 = C 4 = LFE 5 = RL 6 = RR 7 = SL 8 = SR The current implementation as following assignment: 1 = FL 2 = FR 3 = RL 4 = RR 5 = C 6 = LFE 7 = SL 8 = SR Unfortunately, I can not judge whether this is a problem in the program or driver (audio usb). If you have any questions, feel free to contact me. --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu71.1 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: X-Cinnamon DistroRelease: Ubuntu 21.10 InstallationDate: Installed on 2019-11-02 (905 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) Package: alsa-utils 1.2.4-1ubuntu4 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 5.13.0-37.42-generic 5.13.19 RebootRequiredPkgs: Error: path contained symlinks. Tags: impish Uname: Linux 5.13.0-37-generic x86_64 UpgradeStatus: Upgraded to impish on 2021-10-22 (184 days ago) UserGroups: adm cdrom dialout dip libvirt lpadmin lxd plugdev sambashare sudo _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-utils/+bug/1961998/+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
