I solved this problem with choosing Master Mixer channel in ALSA driver properties
-- [AO_ALSA] Unable to find simple control 'PCM' https://bugs.launchpad.net/bugs/276957 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
