Speakers still work with front panel

[Karie]

Hello,
I've connected the front audio panel output for my headphones. I know that when doing so the rear speakers should be disabled automatically but in my case they still work. I hear the sound in both the front headphones and the back speakers in the same time. How can I fix the problem so when I plug the headphones in the sound of the speakers is disabled and only is activated after I unplug them?
And also there is an annoying noise from the earphones when I plug them in even when not playing sound. (They're perfectly fine on stereo-systems so It's not a problem of the earphones but rather of the front audio connectors).

* I have an Asus motherboard and I've configured AC'97 pin definition according to my manual.

Thanks in advance for any suggestion.

 

[SOcRatEs]

Hello! Welcome to TechSpot!

Well a temp fix is to plug headphones in the back.
There may be a jumper on the Mobo, look in the manual for this.
What model asus?

 

[Karie]

My Asus model

is A8N-VM.
I guess I'll just have to mute the speakers in the sound mixer while using the headphones. And regarding the noise, it disappeared after restart.

 

[Mictlantecuhtli]

Maybe you need to set speakers to "headphones" in Control Panel - Sounds and Audio Devices - Speaker settings - Advanced.