@all
If the problem is the crapy connector, why only fails at 1024x768?
can be reproduced in all other 35ns pixelclock screenmodes
try the ugly 1280x512 pal-superhires-interlace for a while
or sometimes it happens with super72 at 800x600, too.
its a bug on the a1k2-mainboard, havent heard from any equal problems from a a4k owner