MB can't detect own display after using external
Macbook 2 GHz Intel Core 2 Duo, Mac OS X (10.5.1)
Macbook 2 GHz Intel Core 2 Duo, Mac OS X (10.5.1)
rhm2k wrote:
I have had precisely the same problem. After two years of using this setup, suddenly the MBP cannot detect the internal display.
- The first time it occurred (earlier this week), I restarted the MacBook while holding down the R key, in order to reset the screen configurations.
That worked until the next time I unplugged the external monitor.
I have:
- reset PRAM (multiple times, three chimes)
- pulled the power and battery and performed an SMC reset.
- pulled all the peripherals and booted up using the OS X installation DVD
This was the interesting part!! I was able to boot up the OS X installation. The internal display was just fine. No problems with it whatsoever. I repaired permissions, and I verified the disk.
When I rebooted from the HD, the internal screen went black after the 'wagon wheel' stopped spinning under the Apple logo (as it always does on a boot).
I then decided to blow away the files
~/Library/Preferences/ByHost/com.apple.preference.displays.<some number>.plist
~/Library/Preferences/ByHost/com.apple.windowserver.<some number>.plist
This was what I found in the following thread:
http://discussions.apple.com/message.jspa?messageID=9344967
The System booted back up with the internal display recognized !!!.... until, I did a "detect displays", at which point the screen went black again!!!
I am now back where this whole thing started. I have an appointment at the Genius Bar tomorrow.
1) The fact that when booting from the DVD works without problem leads me to think this is an all-software issue
2) I'd like to figure out *** has borked the system. I note that I am unable to use teleport (a way of sharing a single keyboard & mouse) across two Macs on a LAN.
Because I'm about to leave on travel and HAVE to have a functioning MacBook, I'm contemplating doing a clean install, reinstalling software and then pulling back my work files from TimeMachine. (Oh joy.)
MB can't detect own display after using external