U3014, Mobility 4670, Displayport = FAIL

[Sovereign]

The only way to get 2560x1600 out of an XPS 1640 is to use DisplayPort since the HDMI port is limited to 1080p.

Fine.

Problem is, it doesn't work. I always get "Link failure detected" when the display connects to the computer. I'm using the DisplayPort cable that came with the monitor (Dell-branded).

Here's where it gets interesting: If I reboot the laptop with the monitor attached, the Windows boot sequence shows up on the U3014! As soon as Windows finishes booting though, back to black.

Any ideas?

 

[rdqlus]

The Windows boot sequence is likely running at a lower resolution that's why it shows up. As for your problem it looks as though others have had similar issues. I found this thread:

http://en.community.dell.com/support-forums/laptop/f/3519/t/19325378.aspx

On Feb 25, 2012 someone posted a solution that might work for you but it is a hacky work-around. Basically involves using an HDMI cable and a custom resolution. Good luck.

 

[Sovereign]

Doesn't work. PowerStrip and Windows report the maximum resolution is still 1920x1200. Thanks though.