Totally disable internal laptop screen to use only external

Hi,
I have a laptop with a 8600M GS graphics card (yup, still alive) and a cracked LCD. I hooked up an external display with nvidia's drivers but I can't see how to totally disable the internal LCD. The reason I'd like to do that is that everything displays on the broken and now removed LCD rather than the external monitor
Any advice?
Thanks,

flipper T wrote:
Have you got nvidia-settings installed ?
If so, first enable the external display then set then internal display resolution to "off"
Then save these settings (you may have to launch nvidia-setting as root from a terminal)
This is what I am getting over SSH
lgp300 ~ $ nvidia-settings -q all
ERROR: The control display is undefined; please run `nvidia-settings --help` for usage information.
Last edited by ForeverAgo (2013-02-10 18:46:45)

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I recently acquired a PB Ti with a bad display. Further, both hinges were cracked off entirely so the screen was only attached by the wires. I'm heading out of town and wanted to get this machine set up for a friend to upgrade from their iMac G3. My thoughts were that i'd just cut the wires from the PB screen, thus removing it completely and attach an external montior.
Now, i only get a black screen on the monitor - no sign of life. The PB boots up fine (and when the display was attached it did support multiple displays) Is there a way to get around this? It seems as though the motherboard needs that electrical loop to know it has a display before it can send a signal to an external display. Anyone with experience please comment - thanks in advance!

You might try seeing if "closing the lid" on the TiBook will cause it to completely ignore the built-in display. I realize you can't close the lid since it is gone. But the way the TiBook thinks that there is a closed lid is through a magnetic sensor located under the trackpad. Depending on which model it is, the mag sensor is either to the left or right side of the trackpad. What I would try is this: Boot the Mac to a point where you are pretty sure the OS is running. Take a magnet off your fridge and slide it around slowly on the trackpad. At some point, the sleep light should come on meaning you have located the mag sensor. Now, try attaching an external display and waking the TiBook by plugging a USB mouse in. Make sure the TiBook's AC adapter is connected. Hopefully the external screen will now light as the primary screen and the missing lid will be ignored.
Another thing you might want to check, if you really did just cut the wires off, is that there aren't shorted out wires at the point where the cuts are. Sometimes on narrow pitch ribbon wire and other wire with closely spaced conductors, cutting through them will cause adjacent lines to short together. You might need a magnifying glass to check that and clean up the rough cut if necessary.

Why can't I close my screen while using an external monitor?

It goes to sleep of course. How can I change this? I'm not seeing anything in the power settings.
Thanks!

Apple Portables: How to use your computer in closed clamshell ...

Recently got a MacBook Pro. When I use it for work purposes, I plug in a large screen and key board. When in this mode I would like to shut off the laptop screen or even close the lid. Is that possible?

RECENTLY GOT A mACKbOOK PRO. WHEN USING IT FOR WORK PURPOSES I PLUG IN A LARGE SCREEN AND KEYBOARD, THAT WORKS FINE. HOWEVER WOULD LIKE TO CLOSE LID ON THE LAPTOP, OR AT LEAST SHUT DOWN THE LAPTOP SCREEN WHILE USING THE LARGE SCREEN. IS THAT POSSIBLE?

Hi Jim,
Craig is right on with his post. Hope he won't mind if I add the following link, as recently it has been noted by some posts here that there are some "quirks" with Clamshell Mode:
http://support.apple.com/kb/HT3131?viewlocale=en_US

Totally disable internal laptop screen to use only external

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