Dear experts,


I've seen some really strange behavior lately, like I've
never seen before.

I have a Dell 4600, with an Nvidia Geforce 5200 card in it.
To date, I've used a simple CRT monitor from Dell.
But this week, I bought an LCD screen from Sony.

There was some flicker. So, I downloaded the latest
drivers and everything from NVidia, and installed
everything. There still was flicker. So, I
decided to compare.


I also have a Sony laptop, and an LCD TV. I use
my Laptop to play DVDs on the TV. I took the 4600
downstairs, and plugged it into the TV. It had
weird display setting when I logged in, but I
changed them and it worked fine. No flicker on
the TV.

I also brought the LCD display downstairs, and
tried it with the same 4600 computer there.
Interestingly enough, no flicker.

So, what is causing the flicker with the LCD?

I also have another desktop, with an ATI card, that
sits right beside the 4600, and it doesn't give flicker
with the LCD. (I use a KVM switch to move between computers.)

So, the location makes a difference.
Upstair flicker
downstairs no flicker

But, why would I also not get flicker with the other
machine, right beside it? Strange!

The machines are XP/Linux dual boot. On the 4600,
it also flickers in Linux.

I read that perhaps the power source might have something to
do with it. So, I ran an extension from the main floor
upstairs. No difference.


So, if that is not enough, today when I boot the 4600,
the video settings are off. They are the same as they
were with the LCD TV. I change them back. And when I
reboot, they go back to what they were with the LCD TV!

What a bother!


Questions

1)
How do I set the video settings so that they stay as I
set them? when I reboot, they are the same as what I
set them to.

2)
Any ideas on what is causing the flicker?