this is only the second problem I've had where in over a year where I've not found a solution on the web.
I've grown tired of Madrake 9.2, finding it next to impossible to compile from source code, especially with complex things like upgrading to kde 3.3 and kernel 2.6.x. So I tried out Fedora Core 3, which has so far been great except for one major problem. Right from the word 'go', as soon as I started installing from the 4 Discs, the screen has intermittently flickered. Every couple of minutes there will be either faint horizontal flickers on the screen, for no apparent reason, and it's now started going quite mad, so that the whole screen will jump about, making it impossible to read. Turning the monitor off then on again fixes the problem, until the next bout of flickers.
I'm using a Rock Xeno-M laptop, and as far as I can tell (not too sure how I find out), I have an integrated graphics chip, SIS 650. I also think that I'm using XFree86, though am not really sure what that means!
Please do help me; I'm on the virge of giving up on linux altogether, which would be very sad!