Hello, I have a Lenovo ThinkPad T440p laptop connected to an Ultra Docking Station. Sound works fine over Laptop Speakers and the 3,5mm Headphone Jack. However that is not the case when I connect the T440p to the Docking station Type 40A10065EU and use the Headphone Jack at the Dock. I've tried loading the alsa module with the "model=thinkpad" or "model=lenovo-dock" without success. My Distro is Gentoo and the Kernel is 3.13-rc4.
Do your dock station has one headphone and one mic Jack or just one combo headset Jack ?
http://support.lenovo.com/en_US/detail.page?DocID=PD029485
Connect headphones or a headset that has a 3.5-mm (0.14-inch), 4-pole plug to the audio connector to listen to the sound from the computer.
Remove the following lines
options snd cards_limit=1 #options snd-hda-intel model=thinkpad options snd-hda-intel model=thinkpad enable=1 index=0 options snd-hda-intel model=hdmi enable=1 index=-2
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pc...
lenovo-dock expect dock headphone Jack and dock Mic Jack ?
Post the output of alsa-info.sh when thinkpad is docked and not docked with headphone pluggedd and unplugged