Here is the amixer content as mentioned from an eailer post for my Acer Aspire 8930 Laptop:
shane@Aspire-8930:~$ amixer contents | grep name= numid=32,iface=MIXER,name='Master Playback Switch' numid=31,iface=MIXER,name='Master Playback Volume' numid=37,iface=MIXER,name='PCM Playback Volume' numid=2,iface=MIXER,name='Front Playback Switch' numid=1,iface=MIXER,name='Front Playback Volume' numid=4,iface=MIXER,name='Surround Playback Switch' numid=3,iface=MIXER,name='Surround Playback Volume' numid=7,iface=MIXER,name='Center Playback Switch' numid=5,iface=MIXER,name='Center Playback Volume' numid=8,iface=MIXER,name='LFE Playback Switch' numid=6,iface=MIXER,name='LFE Playback Volume' numid=10,iface=MIXER,name='Line Playback Switch' numid=9,iface=MIXER,name='Line Playback Volume' numid=12,iface=MIXER,name='Mic Boost Volume' numid=13,iface=MIXER,name='Mic Playback Switch' numid=11,iface=MIXER,name='Mic Playback Volume' numid=15,iface=MIXER,name='Capture Switch' numid=16,iface=MIXER,name='Capture Switch',index=1 numid=17,iface=MIXER,name='Capture Switch',index=2 numid=18,iface=MIXER,name='Capture Volume' numid=19,iface=MIXER,name='Capture Volume',index=1 numid=20,iface=MIXER,name='Capture Volume',index=2 numid=28,iface=MIXER,name='IEC958 Default PCM Playback Switch' numid=24,iface=MIXER,name='IEC958 Playback Con Mask' numid=33,iface=MIXER,name='IEC958 Playback Con Mask',index=1 numid=25,iface=MIXER,name='IEC958 Playback Pro Mask' numid=34,iface=MIXER,name='IEC958 Playback Pro Mask',index=1 numid=26,iface=MIXER,name='IEC958 Playback Default' numid=35,iface=MIXER,name='IEC958 Playback Default',index=1 numid=27,iface=MIXER,name='IEC958 Playback Switch' numid=36,iface=MIXER,name='IEC958 Playback Switch',index=1 numid=30,iface=MIXER,name='Beep Playback Switch' numid=29,iface=MIXER,name='Beep Playback Volume' numid=14,iface=MIXER,name='Channel Mode' numid=38,iface=MIXER,name='Digital Capture Volume' numid=21,iface=MIXER,name='Input Source' numid=22,iface=MIXER,name='Input Source',index=1 numid=23,iface=MIXER,name='Input Source',index=2 As you can see in the list there is no Auto-Mute iface. Nor is it present in/var/lib/alsa/asound.state -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/941219 Title: Speaker Sound does not mute when Headphones are connected. Ubuntu 12.04 LTS Official Release. Missing Auto-Mute Mode in alsamixer. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/941219/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
