[Alsa-user] ALSA - working yesterday, broken today

[Renick B. <re...@gm...>]

Yesterday, I had no problems using Ardour to record a new session. I
tried playing a movie in Mplayer today, and I couldn't get any sound.
I realized I hadn't configured it for my soundcard. When I tried to
configure it, I got:

alsa-init: pcm prepare error: Input/output error

Now I can't get JACK to start or any other audio out of my computer.
The only thing I did before the Mplayer adjustment, I think, was
"smart upgrade" in Synaptic that upgraded a number of apps from the
Ubuntu Hoary repositories.

When I try to start JACK, the errors are:

ALSA: cannot set hardware parameters for capture
ALSA: cannot configure capture channel
cannot load driver module alsa
zombified - calling shutdown handler

In beep, the error is:

"Couldn't open audio..."

How do I troubleshoot this?=20

My /proc/asound/cards looks like this:

0 [I82801DBICH4   ]: ICH4 - Intel 82801DB-ICH4
                     Intel 82801DB-ICH4 with AD1981B at 0xc0000c00, irq 11
1 [NX             ]: USB-Audio - SB Audigy 2 NX
                     Creative Technology Ltd SB Audigy 2 NX at
usb-0000:00:1d.1-2, full speed

My /proc/asound/version looks like this:

Advanced Linux Sound Architecture Driver Version 1.0.9b.

My /proc/asound/devices looks like this:

 20: [0- 4]: digital audio playback
 27: [0- 3]: digital audio capture
 26: [0- 2]: digital audio capture
 25: [0- 1]: digital audio capture
 16: [0- 0]: digital audio playback
 24: [0- 0]: digital audio capture
  0: [0- 0]: ctl
  1:       : sequencer
 33:       : timer
 36: [1- 0]: hardware dependent
 48: [1- 0]: digital audio playback
 56: [1- 0]: digital audio capture
 32: [1- 0]: ctl

My /proc/asound/pcm looks like this:

00-00: Intel ICH : Intel 82801DB-ICH4 : playback 1 : capture 1
00-01: Intel ICH - MIC ADC : Intel 82801DB-ICH4 - MIC ADC : capture 1
00-02: Intel ICH - MIC2 ADC : Intel 82801DB-ICH4 - MIC2 ADC : capture 1
00-03: Intel ICH - ADC2 : Intel 82801DB-ICH4 - ADC2 : capture 1
00-04: Intel ICH - IEC958 : Intel 82801DB-ICH4 - IEC958 : playback 1
01-00: USB Audio : USB Audio : playback 1 : capture 1

If I lsmod | grep snd, I get:

snd_emu10k1_synth       6656  0
snd_emu10k1           100228  1 snd_emu10k1_synth
snd_emux_synth         33664  1 snd_emu10k1_synth
snd_seq_virmidi         7296  1 snd_emux_synth
snd_seq_midi_emul       6912  1 snd_emux_synth
snd_util_mem            4608  2 snd_emu10k1,snd_emux_synth
snd_seq_midi            8480  0
snd_seq_dummy           3844  0
snd_seq_oss            32256  0
snd_seq_midi_event      6912  3 snd_seq_virmidi,snd_seq_midi,snd_seq_oss
snd_seq                47504  12
snd_emux_synth,snd_seq_virmidi,snd_seq_midi_emu
l,snd_seq_midi,snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_intel8x0           30400  4
snd_ac97_codec         72572  2 snd_emu10k1,snd_intel8x0
snd_usb_audio          70080  1
snd_pcm_oss            47776  0
snd_mixer_oss          16896  3 snd_pcm_oss
snd_pcm                81416  5
snd_emu10k1,snd_intel8x0,snd_ac97_codec,snd_usb_ audio,snd_pcm_oss
snd_timer              23428  3 snd_emu10k1,snd_seq,snd_pcm
snd_page_alloc          9604  3 snd_emu10k1,snd_intel8x0,snd_pcm
snd_usb_lib            13824  1 snd_usb_audio
usbcore               107384  7
usbhid,usb_storage,ehci_hcd,uhci_hcd,snd_usb_aud io,snd_usb_lib
snd_rawmidi            24096  4
snd_emu10k1,snd_seq_virmidi,snd_seq_midi,snd_usb _lib
snd_seq_device          8588  8
snd_emu10k1_synth,snd_emu10k1,snd_emux_synth,snd
_seq_midi,snd_seq_dummy,snd_seq_oss,snd_seq,snd_rawmidi
snd_hwdep               9376  3 snd_emu10k1,snd_emux_synth,snd_usb_audio
snd                    52228  24
snd_emu10k1,snd_emux_synth,snd_seq_virmidi,snd_
seq_dummy,snd_seq_oss,snd_seq,snd_intel8x0,snd_ac97_codec,snd_usb_audio,snd=
_pcm_
oss,snd_mixer_oss,snd_pcm,snd_timer,snd_usb_lib,snd_rawmidi,snd_seq_device,=
snd_h
wdep
soundcore               9824  3 snd

What other info do I need to figure this out? Running Ubuntu Hoary
5.0.4 with kernel 2.6.10-5-386.

--=20
Renick Bell
http://www.the3rd2nd.com