Microsoft Help Forums: Re: sound card and win 7 sleep mode - Microsoft Help Forums

Char Jackson wrote:
> On Tue, 30 Mar 2010 15:18:07 +0100, Seasidepeter
> <seasidepeter@nothere.co.uk> wrote:
>
>> I've finally managed to track down the reason my Win7 won't
>> automatically go into sleep mode: it's the sound card. ANY sound card.
>>
>> I've tested exhaustively, switching between onboard (via) and two
>> different other cards, one soundblaster internal, one usb external. When
>> the soundcard- any of them - is disabled, windows goes properly to
>> sleep. When it's enabled, only the monitor goes off.
>>
>> What the hell is that all about?
>> Any ideas what might cure it?
>
> I don't have a useful answer, but I have to ask..."sound card"?? I see
> a lot of systems of varying age come through the shop, but I can't
> remember the last time I saw a system with a discrete sound card. What
> a flashback to the 90's. :-)
>
> Anyway, I hope you get it sorted out. I have a feeling the sound card
> is using interrupt registers that aren't 7-friendly. (I just made that
> up.)
>
Yes, it's probably something obscure like interrupts...beyond me, anyway.
As to why a soundcard - I'm a classical music fan, and get much better
quality playback through my Xonar than through the onboard sound. Sadly,
the pc won't sleep with the Xonar in either....