Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I clicked on a screen resolution in OS X that was incompatible with my monitor and/or monitor cable. I can restart with the shift key held down and boot into a usable resolution, but if I restart in "normal" mode, my display is useless. How can I recover from this?

share|improve this question
    
By holding shift you are telling the OS to use a known good resolution. You should be able to just change the resolution like you did the first time. IS tehre something preventing you from doing this? –  Daisetsu Jul 23 '10 at 22:23

1 Answer 1

up vote 4 down vote accepted

After booting with Shift held down, go back into System Preferences and choose a known good resolution—that'll write it back to the PRAM.

Alternatively, you can just wipe the PRAM by starting up holding Command-Option-P-R until you hear TWO startup chimes.

share|improve this answer
    
It's amazing how often people just say "Zap the PRAM!" as the solution to any problem. However, in this case I have a feeling it would work. –  daviewales May 20 at 15:08
1  
@daviewales My confidence on this actually goes back to System 7.5, where we would try to fix a different problem by zapping the PRAM, and always end up messing up our screen resolution. :-) –  NReilingh May 20 at 15:40

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.