ATI Radeon 5670 Won't Show Resolutions over 1400x900

Posted by Phil Sandler on Super User See other posts from Super User or by Phil Sandler
Published on 2010-06-03T14:30:51Z Indexed on 2010/06/03 14:35 UTC
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Just got my new Dell computer with Windows 7 and an ATI Radeon 5670. I attached it to my current monitor, which is a Samsung 24" (2443bwt). Windows 7 does not allow me to display in resolutions greater than 1400 x 900.

The setup through a VGA cable into the VGA port of the card. The card also has a DVI port, but I need to use the VGA port because a KVM that supports VGA only.

My old PC (which is Windows XP, GeForce 8600 video) can display in 1900 x 1200 on the same monitor (which is what I want) and even higher. It does this through a vga cable also connected to the KVM (through the DVI port but using an adapter). I have tried the same setup (DVI => VGA adapter) on the new PC and nothing changed.

I have tried:

  • Updating the drivers via Windows "Update Driver" (says they are current)
  • Installing the updated version of the drivers from ATI (made no difference)
  • Installing Powerstrip (all the options I would need for a custom resolution are greyed out)

Installing the drivers/software from ATI caused the ATI Catalyst Control Center software to stop functioning, so I can no longer even start it. I have found some references to other people having this problem and instructions on cleaning the software off and reinstalling it (as uninstalling normally doesn't solve it). I will try this tonight. In any case, I didn't see any options in CCC that would allow me to override the settings for max resolution. However I didn't tinker with it too much before I tried updating the drivers, so I may have missed a setting.

I contacted Samsung via online chat and they say it's a problem with the video card/driver (of course--what else would they say?).

Any thoughts on what else I could try?

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