Comment 23 for bug 222428

I really don't think this is duplicate of #202089 because this happens also in lubuntu which doesn't use pulseaudio.

My tests show that this happens on the latest lubuntu 13.10 amd64.

I have a HPCompaq 6720s laptop with the following sound card:

ubuntu@ubuntu:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
ubuntu@ubuntu:~$

After resume this is what I do in order to get the sound back:

1. kill all processes keeping devices in /dev/snd/ open. You can find them by typing:

lsof /dev/snd/*

After that you use the kill command on them

2. force an alsa reload. You do this with the following command:

sudo alsa force-reload

3. IF NEEDED: You start again the programs you previously killed