Everything was OK a few hours ago. I was watсhing some TED video when the sound suddenly just gone to nowhere. I'm not a very experienced Linux user, so I tried to restart the system - it didn't help anyway.
Then I typed
alsamixer
to check out whether PCM and Speaker were turned on. They were. I also tried to update alsamixer to the latest version - it didn't work to. I even tried this "fundamental" way from one russian forum:
sudo apt-get update;sudo apt-get dist-upgrade;
sudo apt-get install linux-sound-base alsa-base alsa-utils gdm ubuntu-desktop linux-image-`uname -r` libasound2;
sudo apt-get -y --reinstall install linux-sound-base alsa-base alsa-utils gdm ubuntu-desktop linux-image-`uname -r` libasound2;
killall pulseaudio; rm -r ~/.pulse*;
sudo usermod -aG `cat /etc/group | grep -e '^pulse:' -e '^audio:' -e '^pulse-access:' -e '^pulse-rt:' -e '^video:' | awk -F: '{print $1}' | tr '\n' ',' | sed 's:,$::g'` `whoami`
Didn't help.
What else can I do?
lspci | grep Audio
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
If I can give you more info - please let me know how to get this info and I'll be able to give it to you.
pulseaudio
in a terminal?