I'm running 2.6.35 linux_omap and have been able to set the size using
the u-boot parameters. You need to pass these parameters into the
kernel when it is starting up.
You should modify the bootargs to the kernel to include something like
'omapfb.mode=dvi:1280x1024MR-16@60'.
When the beagle boots, there is a countdown. Interrupt it by typing a
key (on the serial port), and issue 'printenv'. You'll see all the
environment vars.
In addition, you may want to add -nomodtweak to the file in /etc/X11/
Xinit.d/02vnc. Otherwise, the server does not handle shift keys
properly on US keyboards.
Regards,
Bob Monsen