The pulsemixer workaround works for me, thanks. I can reproduce the problem by changing the the Output Configuration to Analog Stereo input (yes that probably shouldn't be here to select). The problem then persists after a reboot.
OS: Ubuntu 21.10 - Kernel 5.13.0-41 Device: Schiit - Fulla 3 USB Headphone Amp w/ Mic input Only syslog message is: "gsd-media-keys[1761]: Unable to get default sink" -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1267866 Title: usb audio: cannot get ctl value: req = 0x81, wValue = 0x0, wIndex = 0x1400, type = 3 Status in alsa-driver package in Ubuntu: Expired Bug description: I typed in terminal: alsamixer Then I wanted to change the sound card (I have connected an external sound card via USB). I pressed F6, selected the external sound card and pressed enter. alsamixer crashed and outputed: cannot load mixer controls: Broken pipe My ALSA information is located at http://www.alsa- project.org/db/?f=1871c086b58a2965d18cfb38483794788187edfb To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1267866/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
