heavy flickering with ATI 4650 of Acer 8730G

Hi,

I got this ATI 4650 MXM II DDR2 card.

I stuffed it in a Compal FL90, with an 1680x1050 display, and I get very heavy flicking (windows and text is doubling and jumping up and down, along with horizontal lines all over the place).

This starts from POST on, so it is no driver or OS issue.

When I connect it to another LCD with 1680x1050, using new cables, the very same happens. Still the same when reducing resolution, down to 800x600. So you figure chipset of 4650 dead-ish.

BUT: When I connect to an external display, the LCD still is flickering, but the external display is okay, also with resolutions of 1680x1050 and more. So you figure, MXM modul or stuff like that is dead-ish.

I still could see this, but now the next thing really is strange:

If I connect it to another LCD with a resolution of 1280x800, then it is also okay on that LCD (and on external display, too, of course).

So I figure ... wooooot !?!?!?!

Anybody have a clue what this could be then?

LCD flickering and external not - I could explain that. But no flickering on lower-res LCD and heavy flickering on higher-res LCD - that's new, at least for me ...

The 8730G is a 18' monster, right? So it should be able to deal with 1680x1050 resolution, right?

Any ideas?

Thanks in advance!

Cheers

 

The card apparently doesn't support dual-link LVDS displays.

 

Thanks for your insight.

Hmmm, well, it comes from a Acer 8730G, which has a Full HD 1920x1080 display. May it happen that it develops a fault, so that this happens?

Anything I could do to make it support these?

Thanks