The problem on Ubuntu is "solved". I had been using the vesa driver (in /etc/X11/xorg.conf), changing to the ati driver (as what I have) fixed the problem. Oddities: "cat /proc/mtrr" thought I had 128MB only, setting "VideoRAM 262144" in xorg.conf (for the ati driver) fixed that; but this change was not affecting (was not needed to fix) performance; and setting VideoRAM with the vesa driver had absolutely no effect (the setting seemed ignored).
If the vesa driver worked fine on Ubuntu 6.06 dapper, why does not it work on Ubuntu 6.10 edgy? Not the same problem with Debian: on various Debian machines with the problem, I use the ati, nvidia and i810 drivers. (I use vesa also, but not on the machines where I noticed the problem.) I now tried setting VideoRAM with nvidia and ati drivers, but this seems ignored (not reflected in /proc/mtrr nor in the /var/log/XFree86.0.log output). Cheers, Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz/ School of Mathematics and Statistics University of Sydney Australia -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]