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I have:

  • a 30" Apple cinema display, native resolution 2560*1600
  • a Dell Latitude e6320
  • an ePort+ docking station
  • a displayport to dual-link DVI-D adaptor

The display has a dual-link DVI-D lead fused to the case.

The laptop has:

  • intel HD 3000 graphics (known to support this resolution)
  • a built in VGA port (useless)
  • a built in mini-HDMI port (introduced with HDMI 1.3, and therefore capable of driving WQXGA?)
  • Windows 7 32-bit
  • The latest BIOS (A15)
  • The latest graphics drivers from Dell

The docking station has:

  • Two dual-link DVI-D ports
  • Two displayport ports

I've tried both DVI ports and the both displayport ports with the adaptor and the best Windows will offer is 1280*800.

Hitting "list all modes" under graphics properties shows up to 1920*1080, but selecting it turns the display black until windows reverts to 1280*800.

The Intel graphics and media control panel has a custom resolution pane that lets you type in whatever you want. Inputting 2560*1600 gets you a "the custom resolution exceeds the maximum bandwidth capacity" unless you dial it down to 30Hz... which just gives a black display again.

Current theories are that despite offering Dual Link DVI ports the docking station doesn't actually wire them up as such... is that a thing that happens? The same would also go for the displayport-DVI dongle I have, mind, which seems improbable.

One avenue is looking for a mini-HDMI to DVI-D adaptor, though a brief search suggests these are rare and expensive.

On paper this should just work ;_;

BorisHajduk
  • 1,241
Sam
  • 61

2 Answers2

1

A few minutes worth of searching turned up this post. Apparently you need to use DisplayPort in order to achieve the resolution you desire.

https://ask.fedoraproject.org/question/10054/solved-whats-the-max-resoulion-supported-on-intel-hd-3000/

Chris S
  • 81
0

I ordered an expensive active displayport-DVI adaptor off eBay and it works perfectly from the docking station's displayport.

I guess the apparent dual-link DVI ports on the Dell docking station and the Dell displayport dongle were both bogus. Despite having all the pins, they were wired up as single-link DVI ports.

Dell is terrible, is the take-away here.

Sam
  • 61