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Monitor Flickers and is pixel poping using DVI on x1800xl

E

egandt

Member
I just got a samsung 204B as a secondary HTPC monitor, and had it hooked up using Analog for a week without issue, I just moved from analog to digital and now it filckers on and off randomly as if lossing singal (yet windows does not seem to notice this). Also there are specks on the screen much like over clocked video cards will get, but I've seen none of this with the analog connection. I've tried 2 cards on the card now without a solution (both from monoprice and both 24AU) so I do not think it is the cables. But before I RMA the monitor as bad I wanted to get some opinions.

OS: Windows XP x64
What I've tried what I see:
Nvidia GeForc 7800GTX:
strock cable, monoprice 24AU cable 15ft: both fine
x1800xl:
stock cable, monoprice 24AU cable 15ft: both bad
Video drivers 6.7, 6.8, 6.9: all bad but 6.9 seemed the worst
Restored backup of 6.8: Swapped outputs on card: both bad
Changed to 1280x1024 resolution (native is 1600x1200), both cables: fine

If I use alternitive mode and low bandwidtch from the ATI conrtol center then the monitor works, however then the sysetm does not boot up (crashes with a bluescreen everytime I attempt to initialize the video drivers. (6.7, 6.8, and 6.9 all the same)

So here is the new question is this a problem with LCD monitors and ATI x1X00's or is it just this monitor?, remember it works fine in analog mode, but not digital.
 
I had this problem with a 204b that I just returned. As near as I can tell the 204b just sucks. I swapped out the dvi cable with a higher end dvi cable and the problem was reduced. (thus disproving to myself my idea that there's no difference in dvi cables). But the problem increased in serverity slowly. A also found that the problem grows more severe the longer the monitor is on. Also, pointing a fan at the monitor reduces the problem.

clearly, the 204b just sucks and I returned the monitor. I have a xfx 7900gt by the way. There was a test done by tom's hardware before and it showed that ATI cards had superior dvi signal quality than nVidia cards. That was an done on a while ago, not on the current cards. The nvidia problems are probably due to their oems and not nvidia themselves.
 
zeph.... i would disagree that it's the monitor issue....seems like nvidia 7900GT issue and here is why i think that.

i bought 2 204B monitors... one for me and one for my brother.

I have my 204B on my 7800GT WITH OUT ANY ISSUES. I have used both of my 204B monitors on my 7800GT with no issues what so ever. Left screens on for 5+ hours playing movies... no issues.

As soon as i move one of the 204B screens to my brothers computer with a 7900GT... it flickers with DVI...

My gut feeling tells me that something is up with the 7900GT.... or maybe nvidia themselves...
Yours was xfx and mine is evga....

What are you using now? what monitor? what video card?
 
There's been lots of these "LCD flickering" threads lately. I wonder if there's a batch of defective backlights. Or, EDID problems like there was with the Dells. I don't know why it would cause these symptoms though. Odd...
 
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