Ask Different is a question and answer site for power users of Apple hardware and software. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I use Logitech USB speakers with my computer. They are set as the default output device as well as the default alert output device.

Just after boot, all works well. All audio plays perfectly. After using the computer for some time, system alert sounds fail to play. All other sounds play perfectly.

This issue is only solved after reconnecting my speakers. I have set my computer to never sleep, so sleep can be ruled out as a cause.

What is causing this and how do I repair it?

share|improve this question

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.