Hello,I am having problems with the internal mic on my new Dell Latitude E6500. I have the Intel-HDA soundcard (alsamixer says Card: HDA Intel, Chip: Intel G45 DEVCTG). The problem is that I cannot turn off the internal microphone, even if an external one is connected (of course I can mute both simultaneously, but that's what I don't want to).
I am running debianized kernel 2.6.29, with Advanced Linux Sound Architecture Driver Version 1.0.18a.
I played with various settings in alsamixer, but there are too many options/ combinations. The internal speaker seems to be coupled to Capture 0 (if this is off, no sound recording), but simply enabling Capture 1 does not enable the external mic. Playing with Input Source does not seem to have any effect, but of course there are many combinations. Attached is the output of amixer....
Could anyone advise me what to switch on/off to mute internal mic while having the external one enabled? Or is the issue solved in 2.6.30 ? Any hint is welcome.
Thanks a lot in advance, regards
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] Simple mixer control 'Headphone',0 Capabilities: pvolume pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 127 Mono: Front Left: Playback 119 [94%] [-6.00dB] [on] Front Right: Playback 119 [94%] [-6.00dB] [on] Simple mixer control 'PCM',0 Capabilities: pvolume Playback channels: Front Left - Front Right Limits: Playback 0 - 255 Mono: Front Left: Playback 255 [100%] [0.00dB] Front Right: Playback 255 [100%] [0.00dB] Simple mixer control 'Front',0 Capabilities: pvolume pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 127 Mono: Front Left: Playback 111 [87%] [-12.00dB] [on] Front Right: Playback 111 [87%] [-12.00dB] [on] Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'Capture',0 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 15 Front Left: Capture 13 [87%] [19.50dB] [off] Front Right: Capture 13 [87%] [19.50dB] [off] Simple mixer control 'Capture',1 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 15 Front Left: Capture 13 [87%] [19.50dB] [on] Front Right: Capture 13 [87%] [19.50dB] [on] Simple mixer control 'Analog Loopback',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'Analog Loopback',1 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'DAC0',0 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 31 Front Left: Capture 28 [90%] [7.50dB] [off] Front Right: Capture 28 [90%] [7.50dB] [off] Simple mixer control 'DAC1',0 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 31 Front Left: Capture 28 [90%] [7.50dB] [off] Front Right: Capture 28 [90%] [7.50dB] [off] Simple mixer control 'Digital',0 Capabilities: cvolume Capture channels: Front Left - Front Right Limits: Capture 0 - 120 Front Left: Capture 102 [85%] [21.00dB] Front Right: Capture 102 [85%] [21.00dB] Simple mixer control 'Digital Input Source',0 Capabilities: enum Items: 'Analog Inputs' 'Mixer' 'Digital Mic 1' Item0: 'Digital Mic 1' Simple mixer control 'Import0 Mux',0 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 31 Front Left: Capture 27 [87%] [6.00dB] [off] Front Right: Capture 27 [87%] [6.00dB] [off] Simple mixer control 'Import1 Mux',0 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 31 Front Left: Capture 27 [87%] [6.00dB] [off] Front Right: Capture 27 [87%] [6.00dB] [off] Simple mixer control 'Input Source',0 Capabilities: cenum Items: 'Mic' 'Front Mic' Item0: 'Mic' Simple mixer control 'Input Source',1 Capabilities: cenum Items: 'Mic' 'Front Mic' Item0: 'Mic' Simple mixer control 'Mux',0 Capabilities: cvolume Capture channels: Front Left - Front Right Limits: Capture 0 - 3 Front Left: Capture 3 [100%] [30.00dB] Front Right: Capture 3 [100%] [30.00dB] Simple mixer control 'Mux',1 Capabilities: cvolume Capture channels: Front Left - Front Right Limits: Capture 0 - 3 Front Left: Capture 3 [100%] [30.00dB] Front Right: Capture 3 [100%] [30.00dB] 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]
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