I have this same problem when using pulse audio with vlc.  The sound
starts out okay, but then gets garbled and stays that way until I reboot
the machine.  My sound also has a 2 second delay that is present when
using vlc and skype.  The delay might be a separate issue.  If I use
"vlc -vvv" to start vlc and select ALSA with the default settings, the
delay is gone and after about 10 seconds the audio dies completely and
vlc outputs

"[0x7f19f00048e0] main audio output debug: audio output is starving (21337), 
playing silence
[0x7f19f00048e0] main audio output warning: output date isn't PTS date, 
requesting resampling (48071)
[0x7f19f00048e0] main audio output warning: buffer is 48071 late, triggering 
upsampling"

then I get a repeating string of errors like this:

"[0x7f19f00048e0] main audio output warning: output date isn't PTS date, 
requesting resampling (75778)
[0x7f19f00048e0] main audio output warning: audio drift is too big (178071), 
dropping buffer"

If I use AlSA and select the (hw 1:3) I bypass pulse audio and the
everything works fine.

The sound use to be of poor quality in skype until last night when it
magically cleared up, but the 2 second delay is still present.

I am using a fresh install of 11.04.  I didn't have any of these
problems on 10.10 with the same hardware.

aplay -l gives:

card 0: SB [HDA ATI SB], device 0: ALC662 rev1 Analog [ALC662 rev1 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 1: ALC662 rev1 Digital [ALC662 rev1 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

I am currently using the HDMI for sound, the problem is also present
using Analog sound.

....I was just playing with the sound and the poor sound quality in
skype in back.  Apparently after running vlc with pulse, the sound has
stayed at a poor quality for both vlc and skype while totem works fine.

I'm going to continue to test it and see if there is anything else I can
find.

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https://bugs.launchpad.net/bugs/751265

Title:
  pulseaudio distorts VLC audio

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