Michael...
Your suggestion (resetting the PRAM) eventually led me to the solution (I've got my resolution back, and it's very nice!). However, the pathway to achieving this was somewhat circuitous, so I thought I'd post what happened, in case someone else runs into the same or similar set of circumstances. When I first hit the Command-P-R upon reboot, there was an odd pause...and then the only thing I saw was the disk icon with a question mark. One thing I hadn't mentioned was that I have a Sonnet G4 accelerator installed, and it needs the information in PRAM in order to boot the machine. The manual says it's ok to reset PRAM when you restart the machine from the Special menu, but NOT if you do it on a cold boot. I'm not so sure based on what happened- but anyway, the Crescendo comes with a floppy that will rewrite the PRAM, but this didn't seem to help. The manual also suggests that if things still aren't working, and if you have more than 100MB of memory installed, you should try de-interlacing the memory (instead of placing the memory boards in alternate banks (in pairs), place them all right next to one another). After I did this, the computer booted normally (weird, since it seemed to work fine like it was up to this point). When I accessed the Monitors control panel, there was a whole list of options for changing resolution and scan rate - 1024 x 768 at 100 Hz is very decent. So, although it's difficult to tell exactly what caused what, it works now. Oh...it just so happens that the IMS Twin Turbo cards have both an RGB port AND a VGA port - so I don't even need the adapter. Regards, Tom >Tom wrote: > >>I have a PTPro 225, and I recently purchased a used Apple 17" Studio >>Display (CRT) monitor. The problem I have right now is that the only >>resolution I have available to me is 640 x 480. The resolution with >>my previous monitor was (I believe) 1024 x 768, with thousands of >>colors. I have an adapter I'm using to convert the plug on the >>monitor to what's required by the video card, and I'm wondering if >>this could be the problem. Has anyone else used one of these monitors >>with the PTPro? > >Does the adaptor have toggle switches.? >If you had prior used a 15" monitor on the PTP, try Zapping the pram >(command-option-P-R at startup (not restart) >Also try Command-option-A-V at startup which should default the monitor >back to factory settings. > > >Cheers...Michael > > > >-- >Power Computing is sponsored by <http://lowendmac.com/> and... > >123Inkjets.com <http://lowendmac.com/ad/123inkjets.html> > > Support Low End Mac <http://lowendmac.com/lists/support.html> > >Power Computing list info: <http://lowendmac.com/power/list.html> >Send list messages to: <mailto:[EMAIL PROTECTED]> >To unsubscribe, email: <mailto:[EMAIL PROTECTED]> >For digest mode, email: <mailto:[EMAIL PROTECTED]> >Subscription questions: <mailto:[EMAIL PROTECTED]> >List archive: > <http://www.mail-archive.com/powercomputing%40mail.maclaunch.com/> > >Using a Macintosh? Get free email and more at Applelinks! ><http://www.applelinks.com> -- Power Computing is sponsored by <http://lowendmac.com/> and... 123Inkjets.com <http://lowendmac.com/ad/123inkjets.html> Support Low End Mac <http://lowendmac.com/lists/support.html> Power Computing list info: <http://lowendmac.com/power/list.html> Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> List archive: <http://www.mail-archive.com/powercomputing%40mail.maclaunch.com/> Using a Macintosh? Get free email and more at Applelinks! <http://www.applelinks.com>
