No sound when attached to docking station
I have been using Linux and Ubuntu only since the last two months on my (2006) Sony Vaio VGN A617S laptop which is going pretty well on Ubuntu 10.10. When installing Ubuntu audio did get installed alright, and the speakers on the laptop itself are working well even now with the right drivers (snd-hda-intel) for the Realtek ALC260 soundcard.
My problem is when laptop is docked to the A/V docking station (I have seen it referred as a port replicator as well - the model number is VGP-PRAV2), with its two external speakers. And these were not on when Ubuntu was being installed. What is interesting is the headphones jack on the laptop does work when the docking station does not.
I have been trying hard and have already tried quite a few things I saw to be related issues, like:
a) adjustments to some IEC958 in alsamixer
b) using a custom mod for the ALC260 card
All this is to no avail.
If someone could help me with this, that would be really appreciated.