HD 4600 Mobile Can't use External Display Native Resolution 1920X1200

[idata]

Hello,

I have a laptop with

an i7-4710MQ;

Intel HD 4600 on board-graphics,

and GeForce GTX860M GPU.

Running Windows 8.1

The native resolution for the LAPTOP PANEL is 1920X1080.

Here's my problem: I just purchased a Dell U2412M external monitor which has a Native Resolution of 1920X1200. However, I can't get it to display in that resolution and my screen is slightly fuzzy to boot, enough to hurt the eyes and likely due to my resolution problem. I have options for 1600x1200; 1680x1050; 1920x1080; and 2048x1152 but no 1920x1200.

I have updated the Intel HD4600 with the latest drivers. I am connected via VGA (which is my only external option between this laptop and that monitor. i.e. no DVI or Displayport connectors on the Laptop; no HDMI connector on the monitor). I have had some issue with the laptop recognizing the Dell U2412M as "Generic PNP" or "Def Plug and Play Monitor - Default_Monitor" so updating the drivers there has been an issue, but I have been able to force the U2412M analog drivers to load.

At this point I'm guessing there's some issue with the HD 4600 not giving me the correct display options. Can anyone please help?? I have been working on this and researching for a few hours and I'm at a loss.

Thank you.

-Seth G

[idata]

Update: When I tried to do a custom resolution in the display settings for the external monitor (not the built in display) it returned a "custom resolution exceeds the maximum bandwidth capacity" error.

[idata]

I swapped VGA cables and now my computer recognizes the Dell U2412M instead of just Generic PNP. With the computer correctly recognizing the monitor I was able to install the Dell U2412M drivers and it also recognized the correct display settings. 1920X1200. Screen is bright and crisp now, no fuzzy words etc...

I have no idea why one VGA cable allows my laptop (and the HD 4600 Mobile) to recognize the Monitor while the other doesn't, but the Problem is now Resolved!!! Hooray!

[Kevin_M_Intel]

Thank you for sharing this information here! I am sure it will be very helpful for other users.