if you compare the amixer output of real ad1980 and emulated ad1980 the emulated ad1980 did not implement Master Playback Volume
Card hw:2 'ICH6'/'Intel ICH6 with AD1980 at irq 23' Mixer name : 'Analog Devices AD1980' Components : 'AC97a:41445370' Controls : 40 Simple ctrls : 29 Simple mixer control 'Master',0 Capabilities: pvolume pswitch penum Playback channels: Front Left - Front Right Limits: Playback 0 - 31 Mono: Front Left: Playback 27 [87%] [-6.00dB] [on] Front Right: Playback 27 [87%] [-6.00dB] [on] Simple mixer control 'Master Mono',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum Playback channels: Mono Limits: Playback 0 - 31 Mono: Playback 23 [74%] [-12.00dB] [on] Card hw:0 'I82801AAICH'/'Intel 82801AA-ICH with AD1980 at irq 21' Mixer name : 'Analog Devices AD1980' Components : 'AC97a:41445370' Controls : 46 Simple ctrls : 32 Simple mixer control 'Master Mono',0 Capabilities: pvolume pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 63 Mono: Front Left: Playback 0 [0%] [-94.50dB] [off] Front Right: Playback 0 [0%] [-94.50dB] [off] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1487168 Title: [Emulated AD1980 AC97 inside Virualbox 5.0, playback] volume slider problem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1487168/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
