Resolution issues on WD15 Dock with three monitors

Question

I have a Precision 5510 Laptop with Windows 10 and a WD15 dock (type-C). All drivers/BIOS/dock firmware were updated as of 4/12/17. Intel Graphics 530 driver version: 21.20.16.4590 I have 3 Dell monitors connected as follows: Monitor 1  (Dell 2314H) connected via DVI to dock mini-display adapter (1920 x 1080)Monitor 2 (Dell 2314H)connected via DVI to the HDMI adapter (1920 x 1080)Monitor 3 via VGA cable to the dock (640 x 480) For monitor 3, I have tried 2 different models - Dell S2330MX-  - capable of 1920 x 1080 at 60Hz Dell S2340M - capable of 1920 x 1080 at 60Hz Monitor 1 is the primary and the desktop is extended to use all 3 while the 5510 is closed, I cannot get the resolution on monitor 3 to go any higher than the 640 x 480. Documentation Provided by Dell-Robert p over at http://en.community.dell.com/support-forums/laptop/f/3519/t/20004811 suggests that I should be able to get 3x 1280x 1024 Any help would be appreciated!!

rboerner · Accepted Answer

Looking at the resolution support table here -> www.dell.com/.../dell-dock-wd15--usb-type-c---information--capability-and-specifications it may be that you are running into a hardware limitation.

Although a long shot, I'm assuming you are using a 'passive' mini-DisplayPort to DVI converter to connect monitor #1. If you connect monitor #1 with a mini-DisplayPort to DisplayPort cable (the specs indicate it has a DP port -> www.dell.com/.../pd) to rule out the passive conversion as a limiting factor, does that help?

Redbird11 · Answer

rboerner - I appears that I am running into a max resolution issue over the type C. Its unfortunate. I like the higher res that the 5510 has to offer, but losing a 3rd monitor hurts. Thanks for your help

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