On Monday, May 19, 2003, at 08:37 PM, Kynan Shook wrote: > When running dual displays with a 16 MB video card, there isn't enough > VRAM to support Quartz Extreme; you're running plain Quartz. Since > it's always on the external monitor, you might want to try running the > Apple Hardware Test CD that came with your computer. You might also > try an archive and install of OS X 10.2 (or later). > > Wayne Swingle <swingle at ca.inter.net> writes: >> I am experiencing system lockups since upgrading to OS 10.25 and 10.26 >> on PB 667, when using an external display as well as the built-in LCD. >> When resizing, moving, or minimizing a window on the external VGA >> monitor, the system will completely freeze forcing a hard restart. Any >> insight? Are the graphics enhancements in quartz extreme overtaxing >> the >> built-in 16 meg Radeon Mobility? How can you tell if you are running Quartz or Quartz extreme? I absolutely need to run 10.2.5 at the latest for the pro audio software I use, and to be able to access the Magma Cardbus PCI expansion chassis. The freeze only occurs in OSX, If i boot into classic, all is fine. When minimizing to the Dock, if a crash occurs, you can see the animation go by, about a frame a minute, until the beachball starts to spin. The machine will no longer respond to a force quit, once this happens. There are no problems at all running two monitors in OS 10.2.5 or 10.2.6, if all my work is done on the powerbook LCD. A crash will occur when a window resize type of operation is attempted on the external, though not every time, but almost. Thanks for your input. I had seen some utility that would bypass quartz entirely for slower computers, I may try it.