You can't switch resolutions from within X - you'll need to do it
from the console before you launch X.  Use vmode to switch resolutions -
it's available in the pmac-utils rpm package, at

ftp://ftp.linuxppc.org/RedHat/RPMS/

The above location is for the shared libs version.  A statically linked
version should be somewhere at the same site.  The package also includes
man pages, so the vmode man page should have all the info you need.

wj@acpub.duke.edu  7/14/97