Re: [LAU] lost sound (it had been working)

On Monday 19 January 2009 16:51, Reid Vail wrote:
> Hello Group -
>
> I'm really confused about what's gone wrong with my sound. Total
> Silence even though it was working less than two weeks ago after an
> upgrade to 8.10. User error?, or a bad patch maybe...can you help?
>
> I'm running ubuntu 8.10 on a 64-bit machine
>
> _______________________________________________________________________
>
> I have done some research and have been following the steps I found at
> this posting:
>
> http://ubuntuforums.org/showthread.php?t=205449&highlight=comprehensive+sou
>nd
>
> First step is this:
> results appear normal.
>
> reid@email-addr-hidden-rv:~$ aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 0: V8237 [VIA 8237], device 0: VIA 8237 [VIA 8237]
> Subdevices: 4/4
> Subdevice #0: subdevice #0
> Subdevice #1: subdevice #1
> Subdevice #2: subdevice #2
> Subdevice #3: subdevice #3
> card 0: V8237 [VIA 8237], device 1: VIA 8237 [VIA 8237]
> Subdevices: 1/1
> Subdevice #0: subdevice #0
> reid@email-addr-hidden-rv:~$
>
> ___________________________________________________________________________
>__
>
> Second step:
> reid@email-addr-hidden-rv:~$ lspci -v
>
>
> 00:11.5 Multimedia audio controller: VIA Technologies, Inc.
> VT8233/A/8235/8237 AC97 Audio Controller (rev 60)
> Subsystem: ASUSTeK Computer Inc. Device 80b0
> Flags: medium devsel, IRQ 22
> I/O ports at c800 [size=256]
> Capabilities: <access denied>
> Kernel driver in use: VIA 82xx Audio
> Kernel modules: snd-via82xx
>
> Looks Ok, I think
>
> ______________________________________________________________________
>
> Third step:
>
>
> reid@email-addr-hidden-rv:~$ sudo modprobe snd-via-82xx
> [sudo] password for reid:
> FATAL: Module snd_via_82xx not found.
> reid@email-addr-hidden-rv:~$
>
> That's not good, or expected.
>
> Fourth step (sorry about the screwy formatting):
>
>
>
> reid@email-addr-hidden-rv:~$ lsmod|grep snd
> snd_via82xx 36904 3
> snd_via82xx_modem 21900 0
> gameport 21776 1 snd_via82xx
> snd_seq_dummy 11524 0
> snd_ac97_codec 133080 2 snd_via82xx,snd_via82xx_modem
> ac97_bus 10368 1 snd_ac97_codec
> snd_pcm_oss 52608 0
> snd_mixer_oss 25088 1 snd_pcm_oss
> snd_pcm 99208 4
> snd_via82xx,snd_via82xx_modem,snd_ac97_codec,snd_pcm_oss
> snd_seq_oss 42368 0
> snd_mpu401_uart 16768 1 snd_via82xx
> snd_seq_midi 15872 0
> snd_rawmidi 34176 2 snd_mpu401_uart,snd_seq_midi
> snd_seq_midi_event 16768 2 snd_seq_oss,snd_seq_midi
> snd_seq 67168 6
> snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
> snd_timer 34320 2 snd_pcm,snd_seq
> snd_seq_device 16404 5
> snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
> snd 79432 18
> snd_via82xx,snd_via82xx_modem,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_
>pcm,snd_seq_oss,snd_mpu401_uart,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
> snd_page_alloc 17680 3 snd_via82xx,snd_via82xx_modem,snd_pcm
> soundcore 16800 1 snd
>
> So...I'm not sure what to look for here....
>
> Any thoughts would be appreciated.
>
> Reid

Hi Reid.

The first thing I'd check out is alsamixer, as all the modules appear to be
loaded. There is a typo on your 3rd step. Module should be snd-via82xx, not
snd-via-82xx. That aside, open alsamixer as user, as below, and check for
sliders that may be down at zero, or may be muted since the updates. Typical
controls are, Master, PCM, Front, CD. "M" key toggles the mute/unmute.

alsamixer -D hw:0

All the best.

Nigel.
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Received on Mon Jan 19 20:15:02 2009