Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: alsa-utils (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1078233
Title:
Command line volume control amixer has problems with muting
Status in “alsa-utils” package in Ubuntu:
Confirmed
Bug description:
If I turn the volume too low, I cannot take it back. It stays muted
and my "volume up" command does nothing.
$ amixer set Master playback 2dB-
Simple mixer control 'Master',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
Playback channels: Mono
Limits: Playback 0 - 64
Mono: Playback 4 [6%] [-45.00dB] [on]
$ amixer set Master playback 2dB-
Simple mixer control 'Master',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
Playback channels: Mono
Limits: Playback 0 - 64
Mono: Playback 1 [2%] [-47.25dB] [on]
$ amixer set Master playback 2dB-
Simple mixer control 'Master',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
Playback channels: Mono
Limits: Playback 0 - 64
Mono: Playback 0 [0%] [-99999.99dB] [on]
And now it is broken. Following does nothing:
$ amixer set Master playback 2dB+
Simple mixer control 'Master',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
Playback channels: Mono
Limits: Playback 0 - 64
Mono: Playback 0 [0%] [-99999.99dB] [on]
What is expected to happen: The volume raises.
What it does instead: Nothing I could notice.
The value -99999.99dB looks suspicious.
Version of alsa-utils: 1.0.25-1ubuntu5
Ubuntu version: Ubuntu 12.04.1 LTS
Release: 12.04
Note: It comes from this my question on Ubuntu Ask -
http://askubuntu.com/q/216588/34304
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