The AGP G4 came out before ADC and the AGP slot doesn't supply the 25 volts required to power the ADC monitor. Starting with the Gigabit Ethernet machine Apple replaced the 20 pin power supply with a 22 pin power supply which supplied 25 volts. To use your display you need a newer G4, an ADC to DVI adapter(which supplies 25 volts) or you'll need to do some hacking.
On Aug 25, 7:15 pm, spilrules <t...@trierweiler.com> wrote: > I have a 20" ADC cinema display that I used to run on my G4 450 dual > processor (Gigabit) machine with an AGP ATI Radeon 32mb video card > upgrade from the standard ATI Radeon with 16mb with no issues. > Unfortunately this machine bit the dust and I replaced it with a G4 > 450 single processor (AGP) machine with the same 32mb ATI Radeon video > card upgrade and this machine will not power on the 20" ADC monitor. I > have checked the cinema display on my G5 and it works fine. I can also > run a high end Dell monitor with a VGA connection on the G4 attached > to the VGA output of this same ATI Radeon 32mb card also with no > problems, just not the Apple cinema display attached to the ADC port. > I am not trying to run both monitors at the same time, just the cinema > display only is preferred over the Dell. Do I need to get a different > video card to run this monitor on this G4? Any help is appreciated > very much!! -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
