Sorry, false alarm. Still not fixed with 6.8.0-31-generic (must have been some fluke). I'll continue my observations.
I did one experiment: sudo alsactl store on kernel 6.5. And here is what I get running the restore:
$ sudo alsactl -d restore alsa-lib main.c:1554:(snd_use_case_mgr_open) error: failed to import hw:0 use case configuration -2 alsactl: init_ucm:48: ucm open '-hw:0': -2 alsactl: set_controls:1499: device='hw:0', doit=0 alsactl: set_controls:1511: card-info-id: 'avsprobemb' alsactl: set_controls:1546: list count: 0 alsactl: set_controls:1574: maxnumid=-1 maxnumid2=-1 alsactl: set_controls:1587: result code: 0 alsactl: set_controls:1499: device='hw:0', doit=1 alsactl: set_controls:1511: card-info-id: 'avsprobemb' alsactl: set_controls:1587: result code: 0
Sorry, false alarm. Still not fixed with 6.8.0-31-generic (must have been some fluke). I'll continue my observations.
I did one experiment: sudo alsactl store on kernel 6.5. And here is what I get running the restore:
$ sudo alsactl -d restore 1554:(snd_ use_case_ mgr_open) error: failed to import hw:0 use case configuration -2
alsa-lib main.c:
alsactl: init_ucm:48: ucm open '-hw:0': -2
alsactl: set_controls:1499: device='hw:0', doit=0
alsactl: set_controls:1511: card-info-id: 'avsprobemb'
alsactl: set_controls:1546: list count: 0
alsactl: set_controls:1574: maxnumid=-1 maxnumid2=-1
alsactl: set_controls:1587: result code: 0
alsactl: set_controls:1499: device='hw:0', doit=1
alsactl: set_controls:1511: card-info-id: 'avsprobemb'
alsactl: set_controls:1587: result code: 0