MacBook Pro OS X 10.8.4 doesn't detect DVI display with clamshell closed
Just got a Dell S2340M monitor, connected by DVI. Works OK (while displays 'mirrored' - didn't have to do that with VGA) while clamshell is open, but the Mac isn't seeing it with the clamshell closed. Tried rebooting, adjusting display settings, etc., but no joy.
Any hints/ideas (other than not using Dell hardware)?
Recreate the issue and mark the time when you close the lid. Open your Console Application. Post the log messages from the system log in your reply.
Note that there are a few work arounds:
1) Download NoSleep for Mac - Close your MacBook without putting it ...
2) Disable your Mac's display, use external as default display using the following terminal command and reboot (not really recommended...'reverse clamshell'):
sudo nvram boot-args="iog=0x0"
To reset:
sudo nvram boot-args=""
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