I have a Lenovo Y500 with Windows 8. I successfully got Ubuntu 12.04 installed alongside Windows 8 and the nvidia drivers just worked from the start. The sound wasn't working at all however, and although alsamixer was alive and well when I started out, I seemed to have completely destroyed it now.
I keep getting:
cannot open mixer: No such file or directory
$ uname -a
Linux laptop 3.5.0-28-generic #48~precise1-Ubuntu SMP Wed Apr 24 21:42:24 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
I've tried both of the following packages from https://code.launchpad.net/~ubuntu-audio-dev/+archive/alsa-daily/+packages:
oem-audio-hda-daily-dkms - 0.201305101424~precise1
oem-audio-hda-daily-lts-quantal-dkms - 0.201305101424~precise1
but to no avail.
This is the output of my alsa-info:
I've tried many other solutions as well but nothing seems to get alsamixer back, nevermind trying to get the audio to work again.
PS. when alsamixer was still working I did check the levels and it was not a case of the channels being muted.
- /usr/bin is in $PATH.
- no asound rc or conf files anywhere.
- alsamixer is in /usr/bin, can't run it as alsamixer, /usr/bin/alsamixer not with sudo, even after purging and re-installing alsa-utils.
$ ls /dev/mixer -l
ls: cannot access /dev/mixer: No such file or directory
$ ls /usr/bin -l | grep alsamixer
-rwxr-xr-x 1 root root 65344 Mar 28 23:54 alsamixer
-rwxr-xr-x 1 root root 61272 Dec 18 2011 gnome-alsamixer
$ ls /dev/snd -l
ls: cannot access /dev/snd: No such file or directory