There seems to be a desync between the alsa mixer and the pulse mixer; see:
Simple mixer control 'Master',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum Playback channels: Mono Limits: Playback 0 - 64 Mono: Playback 41 [64%] [-17.25dB] [off] <--- Simple mixer control 'Speaker',0 Capabilities: pvolume pswitch penum Playback channels: Front Left - Front Right Limits: Playback 0 - 64 Mono: Front Left: Playback 0 [0%] [-48.00dB] [off] <--- Front Right: Playback 0 [0%] [-48.00dB] [off] <--- Simple mixer control 'Speaker',1 Capabilities: pvolume pswitch penum Playback channels: Front Left - Front Right Limits: Playback 0 - 64 Mono: Front Left: Playback 64 [100%] [0.00dB] [off] <--- Front Right: Playback 64 [100%] [0.00dB] [off] <--- [...] Simple mixer control 'Center',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum Playback channels: Mono Limits: Playback 0 - 64 Mono: Playback 64 [100%] [0.00dB] [off] <--- Simple mixer control 'LFE',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum Playback channels: Mono Limits: Playback 0 - 64 Mono: Playback 64 [100%] [0.00dB] [off] <--- Namely, several critical alsa mixer controls appear zeroed and/or muted. Please try raising their levels and/or unmuting them via `alsamixer' in a Terminal. -- [SigmaTel STAC9221 A1] pactl stat failed to find default card https://bugs.launchpad.net/bugs/681642 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
