Headphone Jacks

[salahaddin]

Friends,
My Dell Studio XPS 16 laptop has two headphone jacks.
In Vista:
-> Jack 1 behaves normally, the laptop speakers are blocked and audio is routed to the headphone.
-> Jack 2 doesnt mute the speakers and both the headphone and the speakers work simultaneously.
I guess this is what is expected, you can actually plugin two hedphones simultaneously and both would work.

Now in Linux (Gentoo 2.6.27):
-> Jack 1 blocks the laptop speakers, and no sound in the headphone too. It mutes everything.
->Jack 2 behaves like it does in windows -> both speakers and headphones work.

Output of aplay -l :
\**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: ATI HDMI [ATI HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0

And yes nothing is muted in alsamixer.
alsamixer -c 1 (card 1) is a bit strange though.. has only one bar IEC958, and theres no bar actually to change the volume.
alsamixer -c 0 has lots of bars, but the headphone bar doesnt effect the volume of headphones plugged (even in jack 2).

I have tried a lot but cant fix it, I cant use my headphone at all and its very annoying. Please help me.

Thanks

[kumarlav]

Dude I got the same problem .. if U get ny further with this plzz let me know ...
thanx in advance

[salahaddin]

People,
Is there no one to help me out ?
Its driving me insane, I stay in a place where no noise is tolerated, i csnt watch anything.´

[Hal343]

If no noise is tolerated, would it be a problem to unplug the speakers and plug the headphones in the speaker jack?

[salahaddin]

You didn't get what i am saying .. one port which should block the inbuilt speakers blocks everything .. no sound speaker or heaphone and the other jack behaves normally , blocks nothing so the inbuilt speakers are always on.