Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

aross0531

macrumors newbie
Original poster
Oct 30, 2014
8
0
Hi, I am going to try to write this out in as absolute much detail as possible in hopes to provide exactly what the issue is, and in turn hopefully find an answer faster.

For starters, here's my Mac's deets:
- MacBook Pro, 15-inch, Late 2011
- Running OS X 10.10.1 Yosemite

The issue I'm having is with the second external display connected through a CalDigit Thunderbolt Docking Station, using a DisplayLink usb connecter for the second display.

I can see what is happening to it but cannot figure out what's causing it. Basically under System Preferences > Display, the options for the second display only offers 1920 x 1080 resolution, while the first display (the one that is working correctly) offers 1920 x 1200. In the image I took of my phone below you can see the monitor with the 1080 height resolution and how it's duplicated (or tiled) the screen on the monitor....... I measured the difference where the screen starts the duplicate and its the 120 pixel difference between 1200 and 1080....

Next tidbit - the driver for the DisplayLink connector is from their website here: http://www.displaylink.com/support/mac_downloads.php

The latest available was released on Oct 10 for Yosemite (beta). I've downloaded and installed it, reinstalled, installed previous versions, etc, nothing changes it. Does anyone have anything for me that might help??
 

Attachments

  • Duped-screen-image.jpg
    Duped-screen-image.jpg
    209.9 KB · Views: 33
  • dual-screen.jpg
    dual-screen.jpg
    58.3 KB · Views: 35
  • display-link-connector.jpg
    display-link-connector.jpg
    53.4 KB · Views: 52
  • 1920x1200 prefs.png
    1920x1200 prefs.png
    113.6 KB · Views: 20
  • 1920x1080 prefs.png
    1920x1080 prefs.png
    96 KB · Views: 29
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.