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G5 Power Mac Video Problem (I think)
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Fresh-Faced Recruit
Join Date: Nov 2000
Location: St. Louis, MO
Status:
Offline
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When I start my G5 2.3 Dual, the monitor shows a bunch of vertical bars. The monitor is a 19" Samsung LCD which is connected to the DVI port on the computer. I have tried changing from DVI port 1 to port 2 and back, but get the same result. I have connected the G5 to my PowerBook in Firewire Target Mode, and there is apparently not a problem with the hard drive (and I assume the system) because I can see and open files through the PowerBook.
I tried connecting the monitor to the PowerBook. It is obvious that the PowerBook recognizes the samsung monitor, but all I get is a black screen with a little box that floats around and says the monitor is not set to the optimum resolution. I can't get the monitor to show the same thing the PowerBook's monitor is showing even though I have tried setting the resolutions for the PowerBook and the Samsung to the same settings.
Is there any way to connect the PowerBook to the G5 so that the PowerBook will act as a monitor? Or is there a way to connect the two so that the PowerBook will run a hardware diagnostic to see if the problem is with the G5's video card?
Any thoughts would be appreciated.
Jeff
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Dedicated MacNNer
Join Date: Jul 2000
Location: Bunch Of Islands in The Pacific
Status:
Offline
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If you can connect a firewire cable between the two then reboot the G5 holding the T key to get to Firewire Disk mode. You should see the G5's drives on the desktop and be able to run disk utility. I do this to run Diskwarrior, faster than booting from the Diskwarrior CD.
I haven't tried the Hardware diagnostic so wouldn't know if that works.
Cheers
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MBP 17" 2.16ghz, ATI x1600 256, 100GBHD, 2GB ram, 23"AppleLCD
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Professional Poster
Join Date: Mar 2004
Location: UK
Status:
Offline
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I'd have thought you'd want to boot the G5 from the PowerBook HD if the OS is recent enough. Reseat your video card too. And reset PRAM (Boot with command-alt-P-R held down for 4 or 5 chimes).
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MacBook 2.0GHz CD; MacBook Pro 15" 2.4GHz Late '08; PowerMac G4 MDD Dual 1GHz; 3x Xserve G4 1GHz; Mac Mini 2GHz; Big pile of broken and working bits;
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Fresh-Faced Recruit
Join Date: Nov 2000
Location: St. Louis, MO
Status:
Offline
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I have tried resetting the PRAM and that did not do anything. I removed the video card and reinstalled it, but nothing changed there either. Starting the G5 in Target Disk mode did not reveal anything.
I can't find any instructions to "boot the G5 from the PowerBook HD." How would I do that, and would that enable me to check the hardware in the G5 from the PowerBook?
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Clinically Insane
Join Date: Oct 2000
Location: Los Angeles
Status:
Offline
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He is suggesting something called firewire target disk mode. Try holding down the option key while starting up; you should see a small menu that will let you select your startup disk. If you see that then you know its probably a software or hard drive problem. Do you have an OS installation disc handy?
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"The natural progress of things is for liberty to yield and government to gain ground." TJ
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