How to disable the iBook internal display?

[Rikintosh]

My macbook has a broken screen (in fact I already removed the screen) but the operating system still identifies an "Internal LCD Display". I wonder if there is any trick via openfirmware to ignore the internal lcd, and dedicate all video to my external monitor, which is stuck at 1024 resolution.

I plan to make a casemod to turn this ibook into a mini powermac g4




I already researched here on the forum and elsewhere, but the most I got was a hack that allows higher resolutions, but at the cost of treating the external monitor as an extension of the ibook lcd

 

[eyoungren]

Do you have an external display attached?

You can switch between internal and external by pressing F7 (or function key + F7, depending on how you set it in System Preferences).

Alternatively, maybe this will help: http://hints.macworld.com/article.php?story=20061024231227119

 

[bobesch]

I wonder if there is any trick via openfirmware to ignore the internal lcd, and dedicate all video to my external monitor, which is stuck at 1024 resolution.
I plan to make a casemod to turn this ibook into a mini powermac g4

Reviewing the specs at everymac.com, the 12" 1,2GHz iBook-G4 offers the same screen-resolution both for the internals or an external display (1024x768). Only mirroring to the 2nd/external display.
Does not come even close to the G4-mini's resolution of 1920x1200.
But sttill a good option for a file-server since power-consumption is very low.

 

[Amethyst1]

Reviewing the specs at everymac.com, the 12" 1,2GHz iBook-G4 offers the same screen-resolution both for the internals or an external display (1024x768). Only mirroring to the 2nd/external display.

Extended Desktop

 

[Amethyst1]

Does not come even close to the G4-mini's resolution of 1920x1200.

The Mini can actually do 3840x2400 (at 13 Hz).

 

[bobesch]

The Mini can actually do 3840x2400 (at 13 Hz).

Yep, you're definitely the god of great diplays!
So 13 Hz ...? Now I know where vertical nystagmus comes from!

 

[bobesch]

Extended Desktop

Uh, took me a while, but now I've got it!
Great to have an extended display in the iBook instead of only screen-mirroring!!!
I'm certainly gonna try this out for the iBook, that serves as a beamer-companion.
Is it possible to also extend screen-resolution of the additional display or does it all result in two 1024x768 connected screens.
And how does that patch affect the OPs cabrio-iBook?

 

[Amethyst1]

Is it possible to also extend screen-resolution of the additional display or does it all result in two 1024x768 connected screens.

You can run the external display at higher resolutions just like on PowerBooks.

 

[DearthnVader]

Something like:

" /pci@f0000000/ATY,ViaParent/ATY,Via_A" find-package drop delete-node

 

[bobesch]

Something like:

" /pci@f0000000/ATY,ViaParent/ATY,Via_A" find-package drop delete-node

Oh, this is foreign language to me and might end up like the hungarian phrasebook ... ("my eyebook is full of eels ...")