Jerry Geis wrote:

I have an i810 chipset and am trying to set a custom mode. X is not taking that mode. Has anyone else run into this situation? How do I get X to take the mode on an i810 driver.

Chris Mauritz chrism@imntv.com wrote:

Which custom mode? I have a number of old 810/815 motherboards (that I'm about to retire) in rackmount systems and I don't recall encountering any issues on the ones that were running X. What resolution/colour depth are you trying to use?

Outside guess?

Run ... CentOS 3: grep -i driver /etc/X11/XF86Config CentOS 4: grep -i driver /etc/X11/xorg.conf

If it says "vesa", then you're kernel framebuffer (vga=mode) is defining your resolution, not X.

If so, edit the file and replace "vesa" with "i810" and restart X (Ctrl-Alt-Backspace from the X console if running).