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G4 I Mac External Video Resolution
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Fresh-Faced Recruit
Join Date: Jul 2011
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Offline
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I recently took the screen off of my G4 I Mac. I read that once the 15 In screen was disconnected I would not be stuck with the 1024x768 resolution. I removed the screen and reassembled the machine and when I booted up I was still in 1024x768 with no larger choices. I am using the mini-VGA to VGA adapter to a 24 Inch LCD. I know the monitor is capable of resolutions up to 1920x1200. Is there another plug I have to physically unplug? Does the OS still think the old screen is plugged in somehow? I have Google'd every possible way I can think of to ask this question without any luck. I know this machine is coming up on 10 yrs old but I think it can still be used for basic inter-tubing or media player. Any help is appreciated.
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Professional Poster
Join Date: Mar 2004
Location: UK
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Did you disconnect the LVDS cable at the logic board end? What OS do you have installed? It should go above 1024x768 easily.
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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: Jul 2011
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any chance you have link to a drawing or a photo of where this cable is? I must looking in the area. Thanks for your assist.
this is a link to a couple photos of the I-mac main board. Just in case you can just shop an arrow on there or take a look at let me know where that cable is. Feel free to write a caption or reply here. thanks again.
https://picasaweb.google.com/mike.au...eat=directlink
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Professional Poster
Join Date: Mar 2004
Location: UK
Status:
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On this image, its the one directly above the ATA connectors for HDD and CDROM.
It usually has a cap over the connector.
I forgot these machines were limited to video mirroring. Have a look at these:
Extended Desktop
About SwitchResX
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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: Jul 2011
Status:
Offline
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My main board only has 1 IDE cable. The CD and HD must both on on the single cable. I already have unplugged a cable from the old screen labeled "TMDS"
https://picasaweb.google.com/mike.au...eat=directlink
In that photo album, there is a photo with 2 circles on it. Those show where I disconnected the old screen. The plug that is near my IDE ribbon has the fan and speaker connectors on it, nothing else.
Do you think that SwitchResX is the only option?
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Professional Poster
Join Date: Mar 2004
Location: UK
Status:
Offline
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It sounds like you have disconnected the display properly. Does the display show up in System Profiler or Display Preferences?
I don't know how else Apple could have restricted the resolution. If the display is not detected and you still can't up the resolution then SwitchresX is your best bet.
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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: Jul 2011
Status:
Offline
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SwitchResX actually did the trick. It was a little more complicated to figure out then I had hoped. I was hoping to see all the possibilities based on the video card and the monitor but instead I had to manually pick a resolution. But any way I have made some steps in the right direction. Thanks for your help
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