Poking around the forums, it seems that the most common way to change the screen resolution is by creating a uEnv.txt file in the boot partition and add the line:
dvimode = 900x900MR-16@60
the default dvimode setting is 640x480 (i found this using printenv in the boot terminal) unless I add the above uEnv.txt file.
However, when the dvimode is set to 900x900 I get the following error in via minicom:
omapdss DISPC error: SYNC_LOST, disabling LCD
and the error just repeats to fill my entire screen, and the beagleboard never boots up. It seems that somehow it’s having issues booting with this resolution.
does anyone have any suggestions / solutions for this?