No sound on VLC and default movie player

Question

I don't get any sound on both VLC and the default movie player on Ubuntu 14.04 while playing both video & audio. But I do get sound when playing audio files via RhythmBox, while browsing on the net and when the logging screen appear.

I've tried:

1. Installing Ubuntu restricted extras
2. Reinstall Alsa and Pulse Audio
3. Update to latest kernel
4. Disable Auto-Mute through alsamixer setting

But all were in vain!

In Alsamixer setting, pressing F6 gives me the following informations:

-Card: HDA Intel PCH                                  
-Chip: IDT 92HD87B1/3  

How to solve this problem?

Solution

Re-installing a package is a good start, but if often doesn't do enough to bring back all the defaults. Try starting the package more fresh with these steps:

$ sudo apt-get remove --purge alsa-base pulseaudio indicator-sound
$ sudo apt-get install alsa-base pulseaudio indicator-sound
$ sudo alsa force-reload
$ killall pulseaudio; rm -r ~/.config/pulse/* ; rm -r ~/.pulse*; rm ~/.config/pulse

You may have to reboot.

Comments

[interfect]

Every time I upgrade Ubuntu, sound from my headless machine breaks, and this fixes it.