[alsa-devel] Analog sound (ALC262) lost on linux (any distro and kernel) on a dual boot system

[Sudip Mukherjee]

On Thu, Oct 23, 2014 at 03:01:24PM +0300, Ploumistos Alexandros wrote:
> Hello,
> 
> A while back I had installed Ubuntu on a friend's laptop -a Sony Vaio VGN-FW21M-
> alongside windows Vista. Everything worked fine for a few years, until at some
> point last year linux went mute, while in windows both the analog and the
> digital outputs continued working. She couldn't remember doing something "out
> of the ordinary", but she was sure it was not after an update. Several months
> later, she upgraded to windows 7 but that didn't change anything. When I got my
> hands on the laptop, I checked for muted controls and other usual suspects,
> deprecated quirks (there were none) and all inputs and outputs of the system.
> HDMI audio works fine and so does the internal mic. Speakers, headphones and
> the external mic input do not work, even though pulse audio volume meter acts
> as if there were actually sounds being played. I followed all of Ubuntu's
> troubleshooting procedures, I removed and reinstalled alsa and pulse, I purged
> all configuration files, I created a new user and I even installed the latest
> alsa-packages from the "ALSA daily build snapshots" repository and nothing
> worked. I also tried booting into windows, setting all volume levels to the max
> and disabled power saving on all sound and multimedia devices. Next, I tried
> retasking the jacks one by one to no avail.
> 
> I remembered that I had performed the installation with an Ubuntu 11.10 live CD,
> so I booted the computer off of that, but this time I got no sound. I tried with
> all the live CDs of a multitude of distros I had lying around, with kernels
> ranging from 2.6.35 to 3.16.6 and none of them worked, so I figured the issue
> must have something to do with windows. Is it possible that windows somehow
> started locking the audio chip on shutdown? If that is the case, can it be
> deduced from the logs and more importantly, can it be fixed?
for my dayjob , i use a computer which is dualboot with windows and ubuntu , which is almost always having linux-next.
and audio works for both my os.
> 
> I am attaching the output of alsa-info and lspci as well as kernel logs.
i think you forgot to attach the files.

thanks
sudip

> 
> Thank you for your time.
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