Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal: apport-collect 1961998
When reporting bugs in the future please use apport by using 'ubuntu- bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs. ** Changed in: alsa-utils (Ubuntu) Status: New => Incomplete -- 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: Incomplete 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. 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
