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ATI 4850 Black screen after I change resolution

Forum Graphic & Displays : Graphics Cards - ATI 4850 Black screen after I change resolution

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utahraptor   06-25-2008 at 05:21:42 AM

I have the newest "hot fix" drivers from ATI and this happens if a program changes the resolution or if I change it. The monitor simply does not get a signal until I reboot. Any ideas?

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lasttarget   06-25-2008 at 05:58:45 AM
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What kind of monitor do you have? I have a sceptre monitor and when i had my x800gt in it it would not receive a signal form the video card after going to sleep and back on. After replacing it with an nividia or using the onboard video only did it work.

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utahraptor   06-25-2008 at 06:01:31 AM
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The monitor is a Samsung SyncMaster 2232BW. If I turn off the monitor and turn it back on, nothing happens.

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derek85   06-25-2008 at 06:37:48 PM
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Sound like a driver issue. I would suggest completely uninstall the driver and reinstall it.

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copasetic   06-25-2008 at 08:24:07 PM
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If reinstalling the drivers doesn't help try connecting the monitor through VGA input instead of DVI, if you can. Most cards come with a little DVI-to-VGA adapter for the cable. I ran into the same type of problem a few days ago, no signal when booting into Windows or after changing the resolution in Safe Mode. Turns out the monitor somehow corrupted itself and was sending faulty device ID information to the video card, now DVI input is just broken while VGA still works fine. Real bitch of a problem to fix because it involves re-flashing the EDID information in the monitor :/

It's not a common problem, but it's happened to quite a few people.

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utahraptor   06-25-2008 at 08:37:29 PM
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It is a fresh vista install with sp1. The only drivers its ever had is the ones I downloaded. The problem seems to be getting better, it has not happened again.

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night_wolf_in   06-26-2008 at 06:30:56 AM
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and how is it getting better? what did u do?

------------------------------ Q6600 @ 3Ghz | zalman 9700NT cooler | gigabyte P35-DS3L | Kingstone DDR2 667 2GB x 2 | HIS 4850HD with Accelero S1 Rev.2 | enermax Liberty 500w | Coolermaster C5 case |
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tjoepie   10-08-2008 at 02:17:53 PM
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How did you get it fixed and how can you flash EDID?
I have the same problem...

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