External monitor stopped working after 10.9.2 update installation

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• Thank you. When did this issue first start happening? After updating to Mac OS X 10.9.2?

• It started after updating but it only started after I used it once last week or two weeks ago

• So it worked once after updating to Mac OS 10.9.2 but after that, the issue started?

• Actually, this is a brand new mac. Had it for about a month. It may have come with 10.9.2

• but yes it worked once then disappeared

• OK. Thank you for confirming that. What type of external display are you connecting to your MacBook Pro Retina?

• samsung hd tv and a dell hd flat screen monitor

• So do you get that issue with either display plugged in?

• Only the monitor.

• OK, so only the Dell but it does show for the Samsung HD TV.

• I got it working. You have to turn off airplay. Then turn it back on and it works again.

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Is there an AOC monitor driver for mac os x 10.9.2

Can anyone who has already upgraded to 10.9.3 confirm that this bug has been fixed in the new version?

Thanks

Yes, it works fine now.

I have a Kogan 27" screen that stopped working with 10.9.2, but is now working again perfectly with this update :-) (worked with the previous beta too)...

I should mention, I connect with the display port (thunderport) on a iMac 27" (2011).

Message was edited by: thavith

Great news!

Thanks mate

Same for me. Kogan 27" that stopped working via displayport on 10.9.2 is now working again on 10.9.3. :-)

Yep! As soon as I upgraded to 10.9.3, the Dell monitor I WAS using (and quit working upon upgrading to 10.9.2), started working perfectly! Thank goodness!

Yes, I'm in the same situation. updated with iOS 10.9.3 and monitor (HP) does not mirror Mac Air computer screen images. No Dock images and the icons on the top are faded. Mouse cannot be seen. I've sent a rude email to Apple, probably so rude they will not respond, but this is really annoying. Any other fixes out there?

Bring Steve Jobs back to life from his frozen locker.

Ok, not sure what happened but the external monitor now mirrors my Mac Air. I noticed that the icons on the top

of the ext monitor became black where as the day before they were grey. I can now click on them as the day before I could not. After that I went into System Pref's - Displays - Arrangement (mirror) and all back to normal. I'd say something had been done overnight. I'm just happy its working now.

gfxCardStatus worked for me changing it to Discrete but I had to plug/unplug the display from the Mac as well.

I upgraded to 10.9.3 today and my Dell U2412m monitor stopped working as soon as I did the update. I have a Macbook Pro 15 inch retina.

Similar case, although mine's macbook pro non-retina (mid 2012). And I had not been aware of the issue until I bought a Dell UltraSharp U2412M (1920x1200) a couple of days ago. Tried the VGA to mini-display port as well as the mini-display port to display port (on Dell).

No luck! Filed a bug report just now but judging by number of similiar threads on number of threads here (ans spanning at least two software updates, Apple has really let it slip big time)

Hi, I managed to borrow and old laptop (only has vga connection). I am on DellUltrasharp U2412M - problems are exactly as per this thread (macbook pro doesn't see it, monitor gets no signal).

So I got to the main menu now, by defaul, as I am connected via VGA, the vga is selected. I then go to the INPUT SOURCE, see the display port as one of the options but I can only select it, which, effectively, switches off the screen. Holding that green tick does nothing for me.

Am I missing something here?

I'd be really grateful for answer. (I've already printed out my amazon return ticket, in the meantime)

Cheers,

Filip

Sorry - was trying to reply to @Midparka and, just got shuffled to the bottom of the list with others, who have no luck or clue how to fix it (no offence). Here's my question again (apologies for spamming)!

Hi, I managed to borrow and old laptop (only has vga connection). I am on DellUltrasharp U2412M - problems are exactly as per this thread (macbook pro doesn't see it, monitor gets no signal).

So I got to the main menu now, by defaul, as I am connected via VGA, the vga is selected. I then go to the INPUT SOURCE, see the display port as one of the options but I can only select it, which, effectively, switches off the screen. Holding that green tick does nothing for me.

Am I missing something here?

I'd be really grateful for answer. (I've already printed out my amazon return ticket, in the meantime)

Cheers,

Filip

I was never able to resolve my issue with the displayport, but I ended up getting an hdmi to dvi cable for my Dell monitor and everything is working well now. Apple just seems to hate the displayport.