@David Henningsson:
1. I had installed those, and indeed today they were updated by Update
Manager (which prompted me to check back here).
2. I found the same things as Gargoulf, so rebooted into Recovery Mode
and dropped into a root command prompt, where the commands worked. (The
machine paused for a second after the reconfig command, so I assume it
was doing it -- are these the Linux equivalent of hardware pokes?)
Rebooting shows that nothing has changed:
System / Preferences / Sound / Input / Connector still shows the same four
options:
Microphone 1 / Microphone
Microphone 1 / Line-In
Microphone 2 / Microphone
Microphone 2 / Line-In
and selecting any of them does not respond to the inbuilt mic.
>From the terminal, 'alsamixer' gives a whole lot of information (none of
which helps):
Under F4 Capture it has Front Mic, Mic, Capture and Capture 1. Putting
the gain to full on all of them doesn't help. Options for Input Source
and Input Source 1 are Front Mic and Mic. Switching between them on
either doesn't help.
Under F2 System information I get these (apologies for the format -- I'm
cutting and pasting from the terminal-mode graphics):
│ │▒▒│ ┌────────────────── /proc/asound/version
───────────────────┐ │
│ │▒▒│ │Advanced Linux Sound Architecture Driver Version 1.0.23.
│ │
│ │▒▒│ │Compiled on Aug 13 2010 for kernel 2.6.32-24-generic
(SMP).│ │
│ │▒▒│
└───────────────────────────────────────────────────────────┘
│
│ │▒▒│ ┌──────────────── /proc/asound/cards ────────────────┐
│
│ │▒▒│ │ 0 [Intel ]: HDA-Intel - HDA Intel │
│
│ │▒▒│ │ HDA Intel at 0xf6ffc000 irq 40│
│
│ │▒▒│ └────────────────────────────────────────────────────┘
│
│ │▒▒│ │▒▒│ ┌─────── /proc/asound/devices ───────┐
│
│ │▒▒│ │▒▒│ │ 2: : timer │
│
│ │▒▒│ │▒▒│ │ 3: : sequencer │
│
│ │▒▒│ │▒▒│ │ 4: [ 0- 1]: digital audio playback│
│
│ │▒▒│ │▒▒│ │ 5: [ 0- 0]: digital audio playback│
│
│ │▒▒│ │▒▒│ │ 6: [ 0- 0]: digital audio capture │
│
│ │▒▒│ │▒▒│ │ 7: [ 0- 0]: hardware dependent │
│
│ │▒▒│ │▒▒│ │ 8: [ 0] : control │
│
│ │▒▒│ │▒▒│ └────────────────────────────────────┘
│
││ │▒▒│ │▒▒│ ┌ /proc/asound/oss/devices ┐
│
│ │▒▒│ │▒▒│ │ 0: [0- 0]: mixer │
│
│ │▒▒│ │▒▒│ │ 1: : sequencer │
│
│ │▒▒│ │▒▒│ │ 3: [0- 0]: digital audio│
│
│ │▒▒│ │▒▒│ │ 4: [0- 0]: digital audio│
│
│ │▒▒│ │▒▒│ │ 8: : sequencer │
│
│ │▒▒│ │▒▒│ │ 12: [0- 1]: digital audio│
│
│ │▒▒│ │▒▒│ └──────────────────────────┘
│
│ │▒▒│ ┌───────────── /proc/asound/timers ─────────────┐
│
│ │▒▒│ │G0: system timer : 10000.000us (10000000 ticks)│
│
│ │▒▒│ │P0-0-0: PCM playback 0-0-0 : SLAVE │
│
│ │▒▒│ │P0-0-1: PCM capture 0-0-1 : SLAVE │
│
│ │▒▒│ │P0-0-3: PCM capture 0-0-3 : SLAVE │
│
│ │▒▒│ │P0-1-0: PCM playback 0-1-0 : SLAVE │
│
│ │▒▒│ └───────────────────────────────────────────────┘
│
│ │▒▒│ ┌─────────────────────── /proc/asound/pcm
────────────────────────┐ │
│ │▒▒│ │00-00: STAC92xx Analog : STAC92xx Analog : playback 1 :
capture 2│ │
│ │▒▒│ │00-01: STAC92xx Digital : STAC92xx Digital : playback 1
│ │
│ │▒▒│
└─────────────────────────────────────────────────────────────────┘
│
Any help greatly appreciated.
John
--
Microphone doesn't work on Dell Precision M6500
https://bugs.launchpad.net/bugs/519066
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