Have you had a peek in the system and/or console log to see if anything got recorded (i.e., an error/diagnostic report) when it happened? Secondly, what version of firmware/ATI Displays are you running? The latest ROM version is 227 and ATI Displays is 4.4 (both are available at http://www.ati.com ) under the Drivers section. On 31 Oct 2004, at 14:40, Kevin Willis wrote: > I just installed a Radeon 8500 AGP card in my Gigabit G4 with a 1Ghz > Sonnet Encore upgrade. The speed increase has been quite impressive. > However, I have had a problem with the system locking up when the > screen saver is activated. I am running Panther and using the > "Cosmos" screen saver that comes with it. I ended up disabling the > screen saver and it works fine now. I'm just wondering if anybody > else has had a similar experience and how they might have solved the > problem. > > Thanks-- > > Kevin > > _______________________________________________ > G4 mailing list > G4 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g4 >