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Steve, Thank you for your reply. I think I fixed the problem and I thought I'd share it in case somebody else will run into it in the future. For users starting X from the command line using a command like startx or kde, the simple answer is to append two dashes followed by a space, a dash, and then the desired color depth to the end of the command line. For example: startx -- -bpp 8 will set the color depth to 8 bit. The command: startx -- -bpp 16 will set it to 16 bit Note that the next time X is started (assuming that no arguments are given), the defaul color depth will once again be used. To change the default color depth at which X is started, check for occurances of the "DefaultColorDepth" keyword in the XF86Config file (usually stored in /etc or /etc/X11) and change the number following the keyword to the depth desired. Be sure to chance all occurances of the keyword in the file. Source: http://www.linux.about.com/compute/linux/library/weekly/aa110899q-a.htm Ciao! Cristina ******************************************************************************* Cristina Lozej Archer PhD Student Department of Civil and Environmental Engineering Tel: 650 723 1825 Stanford University Fax: 650 725 9720 Stanford, CA 94305-4020 Email: address@hidden http://www.stanford.edu/~lozej *******************************************************************************