On 12/30/15, John W <jwdevel at gmail.com> wrote: > On 12/22/15, Tanu Kaskinen <tanuk at iki.fi> wrote: >> >> amixer -c0 set Master toggle >> >> "-c0" may refer to the wrong sound card, though (and it may refer to a >> different sound card after rebooting). "-cNAME" is better, where NAME >> is the sound card name shown in brackets in /proc/asound/cards. >> > > I have tried the "-c" option, and it has ... "sort of" success (: > > ... > > I am not at the machine right now, but can provide the full output > from that process later. > Here's that behavior I was describing: $ amixer get Master # run as the "normal" user, who spawned pulseaudio Simple mixer control 'Master',0 Capabilities: pvolume pswitch pswitch-joined Playback channels: Front Left - Front Right Limits: Playback 0 - 65536 Mono: Front Left: Playback 65536 [100%] [on] Front Right: Playback 65536 [100%] [on] $ # I can hear sound right now $ sudo amixer -c 0 set Master mute Simple mixer control 'Master',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback 0 - 127 Mono: Playback 127 [100%] [0.00dB] [off] $ # I hear no sound - this is good! $ sudo amixer -c 0 set Master unmute Simple mixer control 'Master',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback 0 - 127 Mono: Playback 127 [100%] [0.00dB] [on] $ # Alas, it is still muted ): $ amixer get Master Simple mixer control 'Master',0 Capabilities: pvolume pswitch pswitch-joined Playback channels: Front Left - Front Right Limits: Playback 0 - 65536 Mono: Front Left: Playback 65536 [100%] [off] Front Right: Playback 65536 [100%] [off] $ # Notice the [off] for the L/R outputs, above $ amixer set Master unmute Simple mixer control 'Master',0 Capabilities: pvolume pswitch pswitch-joined Playback channels: Front Left - Front Right Limits: Playback 0 - 65536 Mono: Front Left: Playback 65536 [100%] [on] Front Right: Playback 65536 [100%] [on] $ # Now, I can hear sound again. But I had to run a non-root command to do that. -John