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My audio has always worked perfectly on this hardware and 12.04. Yesterday I received an update, including a kernel update. Today the sound is periodically stuffed. In youtube, mkv files via VLC and embedded audio in web pages (memrise.com) the sound can become stuttery, sped up or stopped mid play-back.

Where can I go to find if this is a known problem, or report it if it is not? Also, can I find a log that will tell me what packages were updated on my machine yesterday?

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2 Answers

I had the same problem, the solution for me was disabling automute.

alsamixer => disable automute

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THANK YOU SO MUCH FOR THIS! This fixed my problem with stuttery audio after doing some updates on Ubuntu 12.10. MASSIVE THANK YOU. Wish I could up vote this twice! –  Mark Tomlin Mar 4 '13 at 7:22
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up vote 1 down vote accepted

How to check if it is a known problem or report it if it is not?

Execute ubuntu-bug and follow the prompts.

Stuttery sound?

See bug #1019693. Also see Turning off PulseAudio timer scheduling, which might help.

Sped-up youtube?

This was seemingly a problem with Google Chrome. A chrome update was pushed the next day (30 June 2012 AEST) which fixed this problem.

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