7408 Views Previous 1 2 Next 21 Replies Latest reply: Jan 12, 2009 9:14 PM by Peter Nelson1 Go to original post
You say that you have rotated the ram into different slots. Have you run without each of the ram sticks yet (other than the original 128MB)? Try rotating the sticks out of your system and see how things go. Even though the software utilities have not detected a problem, your system may not "like" one of your modules.
I still get multiple freezes, even after rotating each stick out of the machine. So either I've got more than one bad stick, or something other than RAM is the culprit.
I may try swapping keyboards and/or using the PCI card USB ports in lieu of the built-in USB ports (using the front-panel power button to start up) to see if that helps. After that, I'll have to check out the processor, most likely.
Another interesting discovery--
I unplugged the B&W USB keyboard, and substituted the ADB keyboard from my old Beige. While the mouse (a 2-button scrolling mouse by Logitech) was plugged into the other built-in USB port, I still got a couple of freezes. BUT--the difference this time is that a three-finger restart actually WORKED using the ADB keyboard (whereas it did not work with the USB keyboard after a freeze). I have now switched the mouse over to one of the PCI card USB ports. It did freeze once (following a hot swap), but so far has not frozen since rebooting with the mouse in the add-on port. So, maybe the built-in USB ports have gone bad? Stay tuned...
Alas, the freezes continue--although things were looking hopeful for the first couple days after switching to the ADB keyboard. I just switched back to the USB keyboard (this time in a PCI card port instead of a built-in), and got a few more freezes. As before, the three-finger restart does not work from the USB keyboard after a freeze. I will start a new thread specifically for the ADB-vs-USB three-finger restart question.
Something else I've noticed at startup, that has me wondering: The initial gray-apple-and-spinner screen is displaying at the minimum screen resolution (640x480?), and then switches to my 1280x960 setting when the startup progress bar appears. At other times (when rebooting into Panther after having been on OS 9), the gray apple screen displays at the higher resolution. Might this be a battery or PRAM issue?
I finally got around to recoating the heatsink, after running for several weeks with the case open and a small external fan blowing straight at the heatsink. I still have to run it case-open with the fan, but am getting far fewer freezes (and so far none after the recoat!). It still freezes when I try running case-closed, so I will have to come up with a more effective cooling configuration. I will open a new thread to solicit ideas on that problem.
The B&W G3 requires a firmware (Boot ROM version in System Profiler) update. See Mac OS X: Available firmware updates
http://docs.info.apple.com/article.html?artnum=86117 The update should be installed (using OS 9) BEFORE you install OS X. Did you install the update?