No sound through headphones in Fedora 14

Sometimes there is no audio from the headphones. In that case, open a terminal, run alsamixer, i.e.

$ alsamixer

The alsamixer window is displayed.
Press F6 button and select "HDA ATI SB" from the list of sound cards and press enter.

Check that none of the mixers are mute (MM is shown below them if they are mute). If none are mute and are at high level but still you can hear no sound, go to the Front Mic, press up-arrow key and then the down-arrow key.

This works for me all the time.

Still have a problem, drop a comment.

Simultaneous sound through both speaker and headphones

I installed Fedora a few days back.
I had the same problem of "speaker not muting when headphone plugged in"
I used the following line:
options snd-hda-intel model=laptop position_fix=1
I had used this to fix the issue with OpenSuSE last month.

But somehow it didn't work. I kept looking and looking.
Then http://ubuntu-ky.ubuntuforums.org/showthread.php?p=9405102 pointed out that I was looking in the wrong place.
I went to System -> Prefernces -> Sound -> Output
And selected "Analog Headphones" instead of "Analog Output"
And it worked.
Thanks to everyone who posted there. :)

Laptop: Asus K40AB
Sound Card: VIA VT1708S (00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA))