You haven't specified your monitor. Tried a different one or messed around with the resolution/refresh rate?

Hi sorry didn't think about that.

It's a Hanns G 17" TFT monitor. I will fiddle with the refresh rate.

Check the card to make sure both fans are working and there is no missing smd components. Are you using the latest drivers?

Hi thanks for the tips.

The drivers are the latest version, the fans and board all look ok to me.

It looks as if it might be an issue with the card.

I have managed to borrow a new PSU from a guy in work as it almost looks like interference.

It's something I can live with until I can find a better example if the card is broken.

Tom

Sounds quite weird to me that only some parts of the image show the issue. Did you press the auto button on your monitor?

I think I know the issue you are describing: It looks like scanlines shifting horizontally. It is most noticeable with text and vertical lines.
This "interference" issue happens on all my Voodoo 5 cards and seems to have crept up over time. I suspect it's caused by ageing electronic components (most probably capacitors).

5u3 wrote:

I think I know the issue you are describing: It looks like scanlines shifting horizontally. It is most noticeable with text and vertical lines.
This "interference" issue happens on all my Voodoo 5 cards and seems to have crept up over time. I suspect it's caused by ageing electronic components (most probably capacitors).

Funny, I never noticed that on my V5's. Texture flickering occurs usually when you set LOD -2 and disable FSAA. But I never saw text flickering before. I'd try with a different monitor. If that doenst help, well... Maybe the card really is defect 😒

I know the issue you are describing: It looks like scanlines shifting horizontally. It is most noticeable with text and vertical lines.
This "interference" issue happens on all my Voodoo 5 cards and seems to have crept up over time. I suspect it's caused by ageing electronic components (most probably capacitors).

This is exactly what happens in the GLQuake text in the menus.

Has it gotten worse for you at all?

YoungThomas wrote:

Has it gotten worse for you at all?

Not really. I wanted to take a photo of the phenomenon to make sure we are talking about the same thing, but I couldn't reproduce the problem today.
All I know is that it is definitely not a software/drivers problem, I remember noticing the same issue under DOS and even in the BIOS setup.

Try re-attaching or tightening the video cable, or swap it for another one in if you can. I've experienced curious video issues before that have gone away after the PC -> monitor connection was changed - mostly moire related but flickering as you describe too.

I actually experienced a bit of interference with my old PC too (very faint moving lines on the screen)... It actually ended up being the mains socket for some reason. There's possibly some noise in the mains loop, although i thought the PSU could filter it. My old Win98 PC works fine with all the other mains sockets i've tested so far.