I'm running Slackware 96 (kernel 2.0.0) and have recently upgraded by XFREE86 system from 3.1.2 (supplied) to 3.2, largely to improve my X Windows capability. My system has 32MB RAM and a 120MHZ Cirrus 6x86 chip, with a 1MB Cirrus Logic GD5434, and a standardish 14 SVGA monitor.
By running XF86Setup, I've been able to improve my situation from 640x480 (256 colours) to 800x600 (256 colours), but I can't get 64k colours, which I believe is possible (when I try my monitor seems to go bananas. Can send more details if required.
Help very gratefully received.