View Full Version : [all variants] Trying to enable DVI-Port on Docking Station with Intel Chipset

November 3rd, 2008, 11:45 AM
I tried to enable the DVI-Port on my Lenovo Advanced Mini Dock (http://www.thinkwiki.org/wiki/ThinkPad_Advanced_Mini_Dock), so that I could use it with my Thinkpad T400 docked into the station.

After a clean install of Ubuntu 8.10, xrandr doesn't show the DVI-Port (also referred to as TMDS-1) in its listing.

jan@thinkbig:/etc/hal/fdi/policy$ xrandr
Screen 0: minimum 320 x 200, current 1440 x 900, maximum 1600 x 1600
VGA disconnected (normal left inverted right x axis y axis)
LVDS connected 1440x900+0+0 (normal left inverted right x axis y axis) 304mm x 190mm
1440x900 60.2*+ 59.9 50.0
1360x768 59.8
1152x864 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9

Since modifications of the xorg.conf are no longer the way to go, I tried to create a FDI policy, so that the "intel" driver is explicitly told to consider the DVI-Port. However the policy is not working, as the DVI-Port does not appear in the xrandr listing.

<deviceinfo version="0.2">
<match key="input.x11_driver" string="intel">
<merge key="monitor-TMDS-1" type="string">dvi</merge>

How do I enable the DVI-Port with Intrepid Ibex installed on my machine?

November 4th, 2008, 01:10 PM
Same problem here with a T500. Suggestions, anyone?

November 15th, 2008, 05:52 AM
I have a W500, and I'm pretty sure that the Intel integrated graphics can only drive VGA, not DVI. Might be a different situation because the W500 has a switchable graphics with a discrete ATI chip as well, and the design allows the ATI graphics to drive both VGA and DVI. But the integrated Intel graphics can only drive VGA.

December 3rd, 2008, 09:55 PM
From what I've read on some forums, I confirm what gatman3 stated.

March 25th, 2011, 02:58 PM
I have the same problem with T400. On the site http://www.thinkwiki.org/wiki/ThinkPad_Advanced_Mini_Dock it is explicitly written: "On laptops with Switchable Graphics only discrete GPU is attached to DVI output."