Anybody running a newer nvidia GPU on a CRT?

[OCNewbie]

Video card - eVGA GTX 260/216 55nm. Drivers - have tried 182.50, 186.18, 190.38, and 190.62

When I boot into safe mode, my monitor reports that I'm running at 640x480 @ 59hz. There is no noticeable flickering on the screen. I've also ran at 1024x768 @ 59hz (in safe mode) and no noticeable flickering (this is with the standard vga driver, not the nvidia drivers)

With the nvidia drivers running the show, under a regular boot, when I set my monitor to run @ 110hz, for example, in software mode, the monitor reports it's being run at 118hz. Software set at 100hz, monitor says 107hz via OSD, etc.

When I set the software to 1024x768 @ 85hz, there is noticeable flickering, much worse than 59hz is in safe mode. 1024x768 with the software @ 60hz is just ridiculous. The monitor's OSD reports 64hz when software is set to 60hz.

I've tried uninstalling and reinstalling the drivers (using driver sweeper, safe mode, etc.) and I still have the same problem.

I'm currently running @ 110hz software, and the monitor's OSD is showing 118hz. I'm not really noticing any flickering atm.



Anyway... is anybody else having a problem with a newer nvidia GPU and a CRT with flickering? I've even tried a 2nd 19" CRT, and they both have the same problems. I tried swapping out the DVI to VGA adapter. I have not tried the 2nd port on the video card yet, though I really feel like this is a driver issue, since 59hz in safe mode looks exactly like you'd expect it to, whereas 60hz with the nvidia driver running things (and the monitor reporting 64hz) things are like a strobe light.

 

[cusideabelincoln]

Using an 8600GT on an old Gateway 2000 CRT and I don't notice flickering. I believe I'm using an older driver set: 178.24

 

[OCNewbie]

What res and refresh rate (Hz) are you running at?

 

[cusideabelincoln]

1280x1024 @ 85 Hz. I've also used lower resolutions as well as 60 Hz and there was no flickering at the time.

I should mention I'm not really susceptible to flickering. This monitor I'm using is very old, and if I look very hard I can make out a flicker every once in a while. But I have never gotten eye strain nor headaches from using CRT monitors at any refresh rate.

 

[VirtualLarry]

Originally posted by: OCNewbie
since 59hz in safe mode looks exactly like you'd expect it to, whereas 60hz with the nvidia driver running things (and the monitor reporting 64hz) things are like a strobe light.

That might be the exact issue. In the US, power is supplied at 60Hz. That means that all of your room lighting has imperceptible flicker at that frequency. Running your monitor at that same frequency creates a "strobing" effect. That is why you notice it at 60Hz, but not when the monitor is set to 59Hz.

 

[CP5670]

186.18 works fine for me on a GTX 280. 60hz has very noticeable flicker, but that's normal and it looks just as bad in safe mode or the BIOS as well. I run Windows at 120hz and games at 85-120hz depending on the resolution. Games look fine at 85hz.

Make sure you have an appropriate inf driver for your monitor installed, and aren't using the default Windows driver.

 

[zagood]

Windows 7 by any chance? I'm seeing a lot of people complain about CRT support. Most common fix is to find a driver for the monitor, which a lot of times is easier said than done.

 

[CP5670]

If you're on 64-bit Vista or Windows 7, you will probably need one of various hacks to get the OS to accept unsigned drivers. It's unlikely for any CRTs to have inf files with Vista or 7 signatures. I'm on XP but from what I'm reading, the "test mode" and test signing utility are the most reliable way to do this.

 

[DominionSeraph]

190.62's work just fine across my monitor's range.

What happens at other resolutions?

 

[OCNewbie]

WinXP SP3. I'm running the right INF file from the manufacturer for this monitor, just changed that yesterday to test. I'm wondering if it's outputting interlaced somehow. I really hope this isn't a bad vid card, gah

Anybody have any troubleshooting tips, or am I not giving enough information to accurately describe the problem?

Currently running 1024x786 @ 110hz (though monitor is saying it's running at 97.1Khz/118Hz), and I swear it still seems a little flickery. Very odd.

Edit: Once and a while, the screen will sorta give a quick flicker that I notice, even when running at the really high refresh rate. It's just a single quick blip across the screen, but its the kinda blip that makes me think the monitor is going bad. It's happening on 2 different monitors, though.

 

[Jeff7181]

I'd call this an excuse to ditch the ancient CRT and get an LCD?

 

[DominionSeraph]

Originally posted by: OCNewbieAnybody have any troubleshooting tips, or am I not giving enough information to accurately describe the problem?

More information would help. Try other resolutions/frequencies, like 800x600 @60/100/120hz, 1280x960 @ 60/85Hz, and 1600x1200 at 60/72hz.

Check your Nvidia control panel and under "Set up multiple displays," make sure you're set up to use a single analog display.

Try the Plug and Play or Default display driver.

Change DVI outputs.

 

[Schmide]

Move your monitor to a different area, you may be getting interference from some electrical conduit.

 

[iamezza]

Try installing the card in a different PC if you have one available.

Try installing on a different OS, eg install windows on a separate HDD or download and run a LiveCD version of Linux.

 

[Soulkeeper]

I get flickering from time to time, but I have faulty wiring in my walls

 

[OCNewbie]

Originally posted by: DominionSeraph
More information would help. Try other resolutions/frequencies, like 800x600 @60/100/120hz, 1280x960 @ 60/85Hz, and 1600x1200 at 60/72hz.

Tried all those. All seem MUCH more flickery than they should AND the monitor is reporting the refresh rate about ~7% higher than the software says it should be.

Check your Nvidia control panel and under "Set up multiple displays," make sure you're set up to use a single analog display.

Done, no go =( Says "Only use one display (Single)". Doesn't mention analog, etc.

Try the Plug and Play or Default display driver.

Had the problem first that way, then tried downloading the actual monitor INF file (it's a Dell M992 19" CRT), but that didn't fix it either.

Change DVI outputs.

Tried that, no go, same issue(s)

 

[OCNewbie]

Originally posted by: Schmide
Move your monitor to a different area, you may be getting interference from some electrical conduit.

Same issue in 2 different homes, ~180 miles apart. Unless it's something in my tower, then I dunno.

I still think this is a driver/software issue, as why would things be perfect when using the Standard VGA Adapter driver, or whatever windows uses, but things go to crap when I install/load the nvidia driver (I've tried 4 variations now).

I'm tempted to just re-install windows. This happened sorta spontaneously. I think I noticed it first one morning when the computer came out of stand-by after going to sleep the night before. I do believe my girlfriend was using the computer last the previous night though... hmmm.

 

[OCNewbie]

Re-installed windows. Very first post-install driver I installed was nvidia driver 182.50 (supposedly really stable), and the problem is still there. Instant flicker upon reboot when the OS loads up at supposedly 85hz.

I have removed my GTX 260 and installed my old ATI X800 and the problem is gone. Now 100hz as reported by the OS registers as 99hz by the monitor, and this is the way it always had been, for both video cards.

I'm wondering if this necessarily confirms that my GTX 260 has problems, or if it's an interference problem, the X800 is just not as sensitive to it. Maybe I can get ahold of another GTX 260 and see if it has the same issues.

 

[OCNewbie]

Got ahold of a BFG GTX 260/216 55nm. Installed it with the 182.50 drivers and the problem isn't there. I'm not sure if that is enough to conclude that my original eVGA card is the culprit or not, but I'm thinking I should probably RMA it.