[pulseaudio-tickets] [PulseAudio] #772: can't switch between internal and external mic and use "Mux" and "Mic Boost" mixer elements

[PulseAudio]

#772: can't switch between internal and external mic and use "Mux" and "Mic
Boost" mixer elements
--------------------------------+-------------------------------------------
 Reporter:  patrakov at gmail.com  |       Owner:  lennart
     Type:  defect              |      Status:  new    
Milestone:                      |   Component:  daemon 
 Keywords:                      |  
--------------------------------+-------------------------------------------
 My laptop (Fujitsu Siemens S6410) has an Intel HD audio controller.
 Alsamixer can control whether the external or internal microphone should
 be used, but this is not expressed at all in the pavucontrol UI. On my
 desktop (based on Intel GD965SS board) that has exactly the same versions
 of software and also has Intel HD audio controller, pavucontrol is able to
 switch between various inputs.

 Here are the software versions:

 linux-2.6.32-gentoo-r1
 pulseaudio 0.9.21
 pavucontrol-0.9.10

 Here is the output from "amixer -c0" on the laptop (where this bug
 exists):

 {{{
 Simple mixer control 'Master',0
   Capabilities: pvolume pswitch
   Playback channels: Front Left - Front Right
   Limits: Playback 0 - 31
   Mono:
   Front Left: Playback 11 [35%] [-30.00dB] [on]
   Front Right: Playback 11 [35%] [-30.00dB] [on]
 Simple mixer control 'PCM',0
   Capabilities: pvolume
   Playback channels: Front Left - Front Right
   Limits: Playback 0 - 255
   Mono:
   Front Left: Playback 252 [99%] [0.60dB]
   Front Right: Playback 252 [99%] [0.60dB]
 Simple mixer control 'CD',0
   Capabilities: pvolume pswitch
   Playback channels: Front Left - Front Right
   Limits: Playback 0 - 31
   Mono:
   Front Left: Playback 0 [0%] [-34.50dB] [off]
   Front Right: Playback 0 [0%] [-34.50dB] [off]
 Simple mixer control 'Mic',0
   Capabilities: pvolume pswitch
   Playback channels: Front Left - Front Right
   Limits: Playback 0 - 31
   Mono:
   Front Left: Playback 0 [0%] [-34.50dB] [off]
   Front Right: Playback 0 [0%] [-34.50dB] [off]
 Simple mixer control 'Mic Boost',0
   Capabilities: volume
   Playback channels: Front Left - Front Right
   Capture channels: Front Left - Front Right
   Limits: 0 - 3
   Front Left: 3 [100%]
   Front Right: 3 [100%]
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined
   Playback channels: Mono
   Mono: Playback [off]
 Simple mixer control 'IEC958 Default PCM',0
   Capabilities: pswitch pswitch-joined
   Playback channels: Mono
   Mono: Playback [off]
 Simple mixer control 'Beep',0
   Capabilities: pvolume pswitch
   Playback channels: Front Left - Front Right
   Limits: Playback 0 - 31
   Mono:
   Front Left: Playback 0 [0%] [-34.50dB] [off]
   Front Right: Playback 0 [0%] [-34.50dB] [off]
 Simple mixer control 'Capture',0
   Capabilities: cvolume cswitch
   Capture channels: Front Left - Front Right
   Limits: Capture 0 - 31
   Front Left: Capture 13 [42%] [7.50dB] [on]
   Front Right: Capture 13 [42%] [7.50dB] [on]
 Simple mixer control 'Capture',1
   Capabilities: cvolume cswitch
   Capture channels: Front Left - Front Right
   Limits: Capture 0 - 31
   Front Left: Capture 0 [0%] [-12.00dB] [on]
   Front Right: Capture 0 [0%] [-12.00dB] [on]
 Simple mixer control 'Capture',2
   Capabilities: cvolume cswitch
   Capture channels: Front Left - Front Right
   Limits: Capture 0 - 31
   Front Left: Capture 0 [0%] [-12.00dB] [on]
   Front Right: Capture 0 [0%] [-12.00dB] [on]
 Simple mixer control 'Input Source',0
   Capabilities: cenum
   Items: 'Mic' 'Int Mic' 'CD'
   Item0: 'Mic'
 Simple mixer control 'Input Source',1
   Capabilities: cenum
   Items: 'Mic' 'Int Mic' 'CD'
   Item0: 'Mic'
 Simple mixer control 'Input Source',2
   Capabilities: cenum
   Items: 'Mic' 'Int Mic' 'CD'
   Item0: 'Mic'
 Simple mixer control 'Int Mic',0
   Capabilities: pvolume pswitch
   Playback channels: Front Left - Front Right
   Limits: Playback 0 - 31
   Mono:
   Front Left: Playback 0 [0%] [-34.50dB] [off]
   Front Right: Playback 0 [0%] [-34.50dB] [off]
 Simple mixer control 'Int Mic Boost',0
   Capabilities: volume
   Playback channels: Front Left - Front Right
   Capture channels: Front Left - Front Right
   Limits: 0 - 3
   Front Left: 2 [67%]
   Front Right: 2 [67%]
 }}}

 Here is the output of "amixer -c0" on the desktop (where this bug doesn't
 exist):
 {{{
 Simple mixer control 'Master',0
   Capabilities: pvolume pvolume-joined pswitch pswitch-joined
   Playback channels: Mono
   Limits: Playback 0 - 64
   Mono: Playback 21 [33%] [-32.25dB] [on]
 Simple mixer control 'PCM',0
   Capabilities: pvolume
   Playback channels: Front Left - Front Right
   Limits: Playback 0 - 255
   Mono:
   Front Left: Playback 254 [100%] [0.20dB]
   Front Right: Playback 254 [100%] [0.20dB]
 Simple mixer control 'Front',0
   Capabilities: pvolume pswitch
   Playback channels: Front Left - Front Right
   Limits: Playback 0 - 64
   Mono:
   Front Left: Playback 64 [100%] [0.00dB] [on]
   Front Right: Playback 64 [100%] [0.00dB] [on]
 Simple mixer control 'Front Mic Jack Mode',0
   Capabilities: enum
   Items: 'Mic In' 'Line In'
   Item0: 'Mic In'
 Simple mixer control 'Surround',0
   Capabilities: pvolume pswitch
   Playback channels: Front Left - Front Right
   Limits: Playback 0 - 64
   Mono:
   Front Left: Playback 64 [100%] [0.00dB] [on]
   Front Right: Playback 64 [100%] [0.00dB] [on]
 Simple mixer control 'Center',0
   Capabilities: pvolume pvolume-joined pswitch pswitch-joined
   Playback channels: Mono
   Limits: Playback 0 - 64
   Mono: Playback 64 [100%] [0.00dB] [on]
 Simple mixer control 'LFE',0
   Capabilities: pvolume pvolume-joined pswitch pswitch-joined
   Playback channels: Mono
   Limits: Playback 0 - 64
   Mono: Playback 64 [100%] [0.00dB] [on]
 Simple mixer control 'Side',0
   Capabilities: pvolume pswitch
   Playback channels: Front Left - Front Right
   Limits: Playback 0 - 64
   Mono:
   Front Left: Playback 64 [100%] [0.00dB] [on]
   Front Right: Playback 64 [100%] [0.00dB] [on]
 Simple mixer control 'Line Jack Mode',0
   Capabilities: enum
   Items: 'Mic In' 'Line In'
   Item0: 'Line In'
 Simple mixer control 'Mic Jack Mode',0
   Capabilities: enum
   Items: 'Mic In' 'Line In'
   Item0: 'Mic In'
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined
   Playback channels: Mono
   Mono: Playback [off]
 Simple mixer control 'IEC958 Default PCM',0
   Capabilities: pswitch pswitch-joined
   Playback channels: Mono
   Mono: Playback [off]
 Simple mixer control 'IEC958 Playback Source',0
   Capabilities: enum
   Items: 'Digital Playback' 'ADAT' 'Analog Mux 1' 'Analog Mux 2' 'Analog
 Mux 3'
   Item0: 'Digital Playback'
 Simple mixer control 'Capture',0
   Capabilities: cvolume cswitch
   Capture channels: Front Left - Front Right
   Limits: Capture 0 - 14
   Front Left: Capture 0 [0%] [0.00dB] [on]
   Front Right: Capture 0 [0%] [0.00dB] [on]
 Simple mixer control 'Capture',1
   Capabilities: cvolume cswitch
   Capture channels: Front Left - Front Right
   Limits: Capture 0 - 14
   Front Left: Capture 0 [0%] [0.00dB] [off]
   Front Right: Capture 0 [0%] [0.00dB] [off]
 Simple mixer control 'Capture',2
   Capabilities: cvolume cswitch
   Capture channels: Front Left - Front Right
   Limits: Capture 0 - 14
   Front Left: Capture 0 [0%] [0.00dB] [off]
   Front Right: Capture 0 [0%] [0.00dB] [off]
 Simple mixer control 'Input Source',0
   Capabilities: cenum
   Items: 'Mic' 'Front Mic' 'Line' 'CD'
   Item0: 'Mic'
 Simple mixer control 'Input Source',1
   Capabilities: cenum
   Items: 'Mic' 'Front Mic' 'Line' 'CD'
   Item0: 'Mic'
 Simple mixer control 'Input Source',2
   Capabilities: cenum
   Items: 'Mic' 'Front Mic' 'Line' 'CD'
   Item0: 'Mic'
 Simple mixer control 'Mux',0
   Capabilities: cvolume
   Capture channels: Front Left - Front Right
   Limits: Capture 0 - 4
   Front Left: Capture 4 [100%] [40.00dB]
   Front Right: Capture 4 [100%] [40.00dB]
 Simple mixer control 'Mux',1
   Capabilities: cvolume
   Capture channels: Front Left - Front Right
   Limits: Capture 0 - 4
   Front Left: Capture 0 [0%] [0.00dB]
   Front Right: Capture 0 [0%] [0.00dB]
 Simple mixer control 'Mux',2
   Capabilities: cvolume
   Capture channels: Front Left - Front Right
   Limits: Capture 0 - 4
   Front Left: Capture 0 [0%] [0.00dB]
   Front Right: Capture 0 [0%] [0.00dB]
 Simple mixer control 'PC Beep',0
   Capabilities: pvolume pvolume-joined pswitch pswitch-joined
   Playback channels: Mono
   Limits: Playback 0 - 3
   Mono: Playback 0 [0%] [-18.00dB] [off]
 Simple mixer control 'Swap Center/LFE',0
   Capabilities: pswitch pswitch-joined
   Playback channels: Mono
   Mono: Playback [off]
 }}}


 BTW, these "Mic Boost" and "Int Mic Boost" controls on the laptop and
 "Mux" on the desktop are also in the chain for the microphone signal, but
 are ignored by PulseAudio (presumably because they lack dB information).
 While setting them with alsamixer and saving the result is a one-off
 operation, they default to 0 and thus one can't get a usable recording
 level after a complete reinstall by pulseaudio tools alone. IMHO that's
 also a bug.

-- 
Ticket URL: <http://pulseaudio.org/ticket/772>
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