Comment 10 for bug 288039

I got the same thing, all sound channels were muted after freeze at "Shutting down ALSA...".

During one evening, I always got the hang at "Shutting down ALSA..." when rebooting or shutting down the PC.

Perhaps not coincidentally, I was having network problems the same evening, due to maintenance from my ISP. (Basically, my local network was fine, I just didn't have an Internet connection).

The next evening, Internet was fine, and the hang was gone.

aplay -l:

**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: Conexant Digital [Conexant Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0