Good feedback on your efforts, pity that they have not been fruitful
My wife’s computer is a Dell 1525 and uses the same Sigmatel audio and has no problems at all.
Different hardware arrangement. The XPS 1710 has a built-in sub-woofer. If I saw the correct information, the 1710 has "microphone-in connector, stereo headphones/speakers connector", the 1525 has a digital output connector.
I tried looking up the BIOS
settings, but can't find them. I would go into the BIOS
and see what hardware can be disabled. I would see if the Sigmatel audio controller could be disabled, then try the USB audio again.
This seems to be quite a widespread problem. I would expect that a system manufacturer that had these problems would offer a recall if they had a solution. Maybe it is a design fault and there is no solution (there certainly doesn't seem to be any single quick-fix from what we have covered).
Think about emailing them http://support.dell.com/support/topi...=us&l=en&s=gen
I suppose the answer will be that it needs to be sent in for repairs and you are the only person on the planet that has this problem
Maybe it's supposed to sound like that
I shouldn't joke, but try to keep your spirits up.
Here's hoping you find something. Keep watching the Dell forums.