Comment 34 for bug 114053

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Michael B. Trausch (mtrausch) wrote : Re: snd_hda_intel (alc883 chipset) does not perform jack sense

This issue is not fixed—I just tested this on Hardy with the hardware that I originally reported the issue on, out of the box and fully updated, and jack sense still does not work.

Reverting to "Confirmed" status. This is something that does work in "that other system", though it seems that it is done by seeing some sort of message from the hardware, which then shuts off the output to the rear speakers.

Note that there are three relevant mixer switches for volume when using 5.1 speakers; the one labelled "Front" by ALSA is what also seems to control the headphone volume, though the headphone volume for the jack on the front of the machine and the ports on the back are two separate things and can (at least in Windows Vista) be controlled separately.