Dell 4600 Linux 865 Graphics BIOS UPDATE A08

http://support.dell.com/filelib/format.aspx?releaseid=r71964

"The following changes have been made to BIOS rev A07 to create A08: 1. Added support for Pentium 4 and Celeron CPUs with larger caches and higher power requirements. 2. Updated microcode for new CPUs. 3. Prevent system lock-up when AC power is lost or button override is used during system resume. 4. Allow full use of 1MB & 8MB on-board video memory to prevent issues with non-windows operating systems. "

I just updated our brand new 4600 Dimension w/ this update and Fedora and RedHat 9 and earlier now run at 1024x768 @ 16 bit color w/o issue OUT OF THE BOX, no Intel Drivers from their website, etc. If your settings are messed up from trying to fix this (unfixable by non-BIOS-writing gurus) issue, run a 'redhat-config-xfree86 --reconfig --noui' from a console login to get to a workable X-capable state, and then change to runlevel 5 or run startx from runlevel3. Then run 'redhat-config-xfree86' from an xterm to do any tweaking, such as defining your monitor if the system can't detect it over the VGA wire.

If X is messed up and your default runlevel is 5 (causing X to flip in and out while failing), reboot nicely w/ a ctrl-alt-del, and then hit 'e' when the grub screen comes up, and then hit the down arrow key to choose the second line of the grub command line for your kernel image and hit 'e' again, and then add a '3' to the end of the line to force runlevel 3. This will ONLY be for this single boot.