Well, after searching I found which disabling the power down HDA controllers solved most of my problem, althought each session starts with audio muted( i have to increase volume to enable it).
In alsa-base.conf # Power down HDA controllers after 10 idle seconds options snd-hda-intel power_save=10 power_save_controller=N -- ubuntu 9.10 no sound https://bugs.launchpad.net/bugs/472151 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
