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#1 2012-09-25 00:37:59

murali
Member
Registered: 2011-02-24
Posts: 13

[SOLVED] Lost sound

I had sound working until 2 days back and now i can't hear a thing - youtube, mp3/vlc, nothing works. I had the laptop connected to monitor which had inbuilt speaker which doesn't work as well and neither does a headset. I took the machine to a technician and he says he can't find any issue with hardware. He didn't open the laptop, just connected a usb device through which he checked motherboard for any issues, and said everything seems to be working fine and he suspects it's a Linux issue. I've other Linux distros installed in the same machine as well - Mint, Debian etc and i can't get the sound working on any of them. I feel it's a hardware issue.

It's a Lenovo R61 and some of the basic sound commands output is shown below -

aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: Conexant Digital [Conexant Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
[root@linux murali]# cat /proc/asound/card0/codec#0 | grep Codec
Codec: Conexant CX20549 (Venice)

lsmod | grep '^snd' | column -t
snd_hda_codec_conexant  39642  1
snd_hda_intel           21808  2
snd_hda_codec           83164  2   snd_hda_codec_conexant,snd_hda_intel
snd_pcm                 61301  2   snd_hda_codec,snd_hda_intel
snd_page_alloc          5901   2   snd_pcm,snd_hda_intel
snd_hwdep               4746   1   snd_hda_codec
snd_timer               14902  1   snd_pcm
snd                     44906  11  snd_hwdep,snd_timer,snd_hda_codec_conexant,snd_pcm,snd_hda_codec,snd_hda_intel,thinkpad_acpi

cat /proc/asound/card0/codec#0 | grep Codec
Codec: Conexant CX20549 (Venice)

Can anyone please suggest if there's any way i can figure out what the issue could be or should i be checking with some other technician.

Thanks.

Last edited by murali (2012-10-05 02:30:44)

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#2 2012-09-25 01:31:35

hadrons123
Member
From: chennai
Registered: 2011-10-07
Posts: 1,249

Re: [SOLVED] Lost sound

I've other Linux distros installed in the same machine as well - Mint, Debian etc and i can't get the sound working on any of them

Either there is a physical hardware mute button or a hardware failure.

Last edited by hadrons123 (2012-09-25 01:36:21)


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#3 2012-09-25 02:03:32

murali
Member
Registered: 2011-02-24
Posts: 13

Re: [SOLVED] Lost sound

Thanks for replying. Sound is not muted, i checked that first thing when it didn't work. I suspect hardware failure too, maybe i should take it to another technician and see if anything can be done about it.

Thanks.

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#4 2012-09-30 02:40:22

walterjwhite
Member
Registered: 2011-05-01
Posts: 207

Re: [SOLVED] Lost sound

Hi murali,

Just out of curiousity, try unloading all of your sound modules and reload them.  Then make sure the cards are all unmuted.

Let me know what happens.

Walter

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#5 2012-10-05 02:29:52

murali
Member
Registered: 2011-02-24
Posts: 13

Re: [SOLVED] Lost sound

Hi Walter,

Thanks for the input. Sound is working fine now. I took the machine to another technician and all he did was change sound card property to Analog and increased the volume button to max, sound just started working again. He says software upgrade might have disabled sound. Strangely doing this in one Linux made the sound work in all other distros as well. And he charged $20 just to increase the volume button  :-(. Guess i can't blame him as well, i should've fiddled with different settings myself.

But a lesson well learnt :-). Will mark the thread solved.

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