Ok, people from the apparmor mailing list explained that ENOPROTOOPT error is returned when the kernel doesn't have "fine grained unix mediation", and that it still hasn't been merged upstream, so it's a patch that has to be manually merged.
I prepared a patch. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apparmor in Ubuntu. https://bugs.launchpad.net/bugs/2051454 Title: pipewire wireplumber can not detect the sound output device when using an unofficial linux kernel Status in apparmor package in Ubuntu: Confirmed Status in pipewire package in Ubuntu: Confirmed Status in wireplumber package in Ubuntu: Confirmed Bug description: Ubuntu 24.04 noble I tested on Kernel-6.7.2, 6.7.1, 6.6.8, don't work. relating service status: gsd-media-keys[6441]: gvc_mixer_card_get_index: assertion 'GVC_IS_MIXER_CARD (card)' failed pipewire-pulse[5768]: mod.protocol-pulse: client 0x5e701af4f9a0 [Mutter]: ERROR command:-1 (invalid) tag:418 error:25 (Input/output error) pipewire-pulse[5768]: mod.protocol-pulse: client 0x5e701af4f9a0 [Mutter]: ERROR command:-1 (invalid) tag:426 error:25 (Input/output error) pipewire-pulse[5298]: default: snap_get_audio_permissions: failed to get the AppArmor info. wireplumber[61568]: <WpSiStandardLink:0x6289464187e0> si-standard-link: in/out items are not valid anymore wireplumber[61568]: <WpSiStandardLink:0x6289464541c0> 2 of 2 PipeWire links failed to activate It's worked on kernel linux-image-6.5.0-14-generic. I built the same version 1.0.1 from the https://gitlab.freedesktop.org/pipewire source code, The sound card can be detected normally and shown in the gnome setting. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/2051454/+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
