Sleep problems due to Sound Assertion

Hey Guys,

All of a sudden (This could have been going on a while without me noticing) my Macbook Pro no longer sleeps, when i close the lid the screen shuts down but the fans keep running and the LED keeps on. However when i re-open the screen switches back on then around 5 seconds later dims itself, the only way to restore it is to use F1/F2 to dim/brighten the screen.

I have been into console the the major problem seems to be to do tis with :


01/01/2012 17:35:37.000 kernel: Sound assertion "failedToClearInterrupt" failed in AppleHDAController at line 3639 goto handler

Anyone have any ideas?

Thanks.

 

Thanks for that, the first link doesn't actually work , however the second one, when i type syslog |grep -i "Wake reason =" into terminal nothing comes up at all

Any other ideas?