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My problem

I just bought a computer screen which has a maximum resolution of 2560 x 1440. I have a PC and it only show me the choices for the resolution 1680 width and below. I already installed the drivers.

My question(s)

Can the resolution choice depend on what graphics card I have installed? Maybe I need to

  • change my graphics card?
  • Is resolution 2560 x 1440 just for Mac and not for PC? I hope not.
  • Am I in the right Q&A for this question?

What do I have to do?

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Yes, the resolution depends on the video adapter. Have you looked up the specs of your video card to see if it supports that resolution? Or perhaps (at least) provide us with the make and model, so we can give you an informed answer... :) Also, what connection type are you using (VGA, DVI, HDMI)? –  techie007 Jun 16 '12 at 17:14
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4 Answers

Sounds like the right place.

This sounds like you may have an inadequate video card that doesn't have enough RAM which is highly unlikely unless you're using a very old video card. Therefore, I'd be looking to upgrade/update the video card's drivers (I don't know what you have so you'll have to ask that in another thread).

If you're sure you have the best and most current drivers then you may want to adjust your driver settings to allow you to see all the resolutions that your card may support - not just the resolutions that your driver thinks your monitor is capable of. (I might be able to help there too if I knew what OS and card you had.)

Of course, the simplest thing might be to just get a better monitor cable. If you use VGA (which I don't recommend) and your VGA connection is only using 3 or 4 lines (connections) then it's almost a certainty that your card can't properly detect your monitor. This is almost always a problem when a KVM switch is used too. But if you're using a DVI cable then you should be OK. HDMI is also usually acceptable and able to provide monitor info back to the card although you may have troubles with audio.

So if you want to provide more info about your system maybe someone can help better. (Sorry if that's not much help.)

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Good answer, a vote up for that. However it was not the right one for my problem. I was using a DVI cable when display port cable was required for the high resolution. –  Jens Törnell Jun 28 '12 at 13:55
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up vote 1 down vote accepted

I was using a DVI cable. When changing to display port it worked.

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I'm in the exact same boat. I also have the HP ZR2740w and it comes with a DP and DVI-D Dual Link cables. I can get 2560x1440 using the DP cable with my UltraBook but I have been unable to get that resolution using DVI with any of my desktops. I've tried Sandy Bridge and Ivy Bridge based IGP's and a Radeon 7750. I've tried creating custom display profiles using the Intel drivers with no luck. Perhaps the motherboards are fake dual link ports and are only single link DVI.

I can't imagine that the DL ports on a Radeon 7750 are incapable of 2560x1440. The catalyst drivers don't allow creating custom resolutions but there seem to be some registry hacks and custom utilities out there to do it. I've tried, but still no luck.

My last remaining option is to find a mini DP to DP cable and use that on my Radeon 7750. Either that or go get another graphics card with a full size DP port.

So my "answer" if you will is to forget about DVI and use DP. But this seems wrong and broken to me because why else would they bother putting DVI and DP ports and provide cables with this monitor? Surely there must be some alignment of the stars where DVI actually works.

I'll keep trying and update my answer if I ever find it.

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Resolutions above 'HD' (1920x1080 or 1920x1200) require you use a 'Dual Link' DVI cable. If the cable you had was single link (google those terms to find out how to ID the cable) then it will limit the resolution, or look like hell.

You need to (as you did) use a displayport cable if your monitor supports that, or get a Dual Link DVI cable (would be surprised if the monitor did not come with one)

Note also that if you are connecting to something like a Mac, using their mini-display port or thunderbolt connector, that most of the cheap passive mini display port to DVI adaptors are Single Link, and thus will not work at the higher resolutions. You can get mini-dp to DualLink DVI adaptors, but they are not cheap, ones from places like Monoprice.com run for around $50, and the official Apple one is likely close to double that. If the monitor supports displayport, just get a mini to regular DP cable, it will be a lot cheaper. The only reason to go with a mini-DP to DualLinkDVI adaptor would be if the monitor does not have displayport, or you are doing something like feeding a DVI KVM (Keyboard, Video, Mouse) switch to serve two systems with a single display. (in which case it better be a good KVM that supports Dual Link DVI

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