Flickering Grays on external LCDs

[abrichr]

I have a Compal HEL80 notebook computer with a Nvidia GeForce Go 7800 [EDIT: 7600] video card. The laptop's display has never had any flicking problems.

I'd previously purchased a 22" HP TN LCD (forget which model), but I sold it since it wasn't big enough, and I decided I wanted a VA panel intead. I'd noticed that darker shades of gray had a noticeable horizontal flicker to them, which did not appear on the laptop display. I figured it was due to the panel, but I just picked up a Soyo DYLM24D6 24" VA panel, and this one's having the same issue.

At this point, I figure it must be a problem with the video card. The refresh rate is set to 60Hz, and the resolution is the native one, 1920x1200. The problem persists under 59Hz, as well as at different resolutions. I hook up an old 17" LCD at work every day, and have never seen anything like this. Any ideas on what's causing this, or how to fix it?

 

[abrichr]

Just confirming that this problem is not apparent on my desktop, so it must be a probem with the video card.

Also, it turns out, the darker the shade of gray, the more visible it is, with black being the worst. It's least visible if viewed straight on, but as soon as you're looking at an angle, it's impossible to miss. Very frustrating, since it's a 24" display, and I'm always looking at some part of it on an angle.

Any input would be appreciated

 

[coolie_d]

Actually, it seems to be a quirk that happens with some LCD panels. I've seen it on my BenQ FP91G+, some Samsungs at work, and a few others. My old Syntax Olevia 26" LCD TV that uses IPS doesn't do it however. Doubtful it has anything to do with your videocard.