I have an XPS 420 with integrated
It does not have facility to record
from a microphone so I upgraded with a Soundblaster X-Fi Xtreme Audio
which works ok on the rear ports.
But if I attach a headphone to the
front ports I get sound but no microphone response.
I note on the
back ports my speakers are using the X-Fi drivers but when I plug a
headphone into the front it switches to using the 2 MS High
Definition Audio Device drives. I presume this is the integrated
sound. If I disable the HDAD drives I get nothing and if removed they
reinstall themsleves on restart. Any other drivers were uninstalled.
How can I get all ports running off the
That's not how the ports work. The front ports are physically connected to the Azalia header on the motherboard and cannot be connected to the X-Fi. The X-Fis with an actual X-Fi audio chip (as opposed to the XtremeAudio which only has an Audigy 2 ZS chip) have a separate header on the board which allows you to connect a breakout box which fits into a 5.25" drive bay at the front of your computer. Unfortunately, you have no easy resolution to this issue.