Hi I just wanted to bump this because it worked for me.
Basically I made this post in another forum:
I have a Dell XPS LS01X. It has 3 audio slots:
1) Audio-out/headphone connector
2) Headphone/digital S/PSIF combo connector
3) Audio-in/microphone connector
My 5.1 system requires 3 slots - it has a black, pink and green wire. My Dell manual says for the audio-in slot: "NOTE: You can get up 5.1 channel speakers by using the three audio connectors (1, 2 and 3) or by using the S/PDIF connector (2)".
With Realtek Audio Manager (system controls for audio) I can change what the jacks are used for.
1) Can be used for;
-Headphone
-Front Speaker Out
2)
-Headphone
-Front Speaker Out
-Rear Speaker Out
-Center/Subwoofer Speaker Out
-S/PDIF-Out
3) (Audio slot)
-Line In
-Mic In
-Rear Speaker Out
I have a Logitech X-530. It recommends I put green in 1), pink in 2) and black in 3). The problem is that 3) doesn't work even if I change the setting to "Rear Speaker Out".
Other information:
---ANY SPEAKERS work with 1) and 2) as long as the jack is for HEADPHONE or FRONT SPEAKER OUT (i.e. even the center speaker out option doesn't let my speakers work)
---REAR SPEAKER OUT doesn't work with anything
My Realtek Audio Manager (as well as general sound settings) allow me to set sound to Stereo, Quadraphonic or 5.1 so I think 5.1 should work...
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In the registry, I found PIN01 PIN03 PIN04 - I think reinstalled the Realtek HD audio and the numbers changed to like PIN19 PIN1a PIN1b. Anyway, I had all 3 jacks plugged and changed the values to 04 00 00 00. Then I restarted and wullah! It worked!
-Do not remove the replug the things into the jacks or it will reset the values and you need to change again
-Restarting is ESSENTIAL: someone else said something about disabling the speakers and enabling = restart in another forum but it didn't work for me...
Thanks!