Second display problem with 10.9.4

If this isn't fixed by next Monday, I'm going to stand outside my local apple store and start telling customers about the horrible "multiple monitor" support.

This crap has been an issue form 10.8 to 10.8.3, and has yet to work with Mavericks 10.9 - 10.9.4.

I'm gonna flyer Miami with the reports and actively sell my macbook, mini, ipad and iphone in front of the store and order a dell right there and then.

I'm glad it worked for you, Chet - it was a real relief when the OP shared it, and it worked for me.

So far, I've used it on 10.9.3 and 10.9.4 – I'm just keeping it on my desktop, ready to use if future updates scramble the display situation.

Given that it's a clear and repeatable fix, it's a shame that Apple can't track down the problem with the updates. I'm a huge Team Apple fanboy, but I've never had this kind of repeated issue in the entire time I've used Macs – and that's since week 3 after release in 1984.

oh man - not being a computer guy - this is all new. yes. i need the plug and play screens. and I too have lost my view. Ive read everypost and tried bascially everything a now guru can do. I have a hard time justifing buying another macbook / notebook or any mac (in which i need asap)

I agree on the disappointment.

I've been along for the long ride as well - a ][+, //ci, 840av, NeXT slab, NeXT cube, OpenStep on white hardware, G3 laptop, G4 tower, and a bunch of modern... sure, there have been moments of suckage - but this is a record low point which i find inconceivable.

To know that they sit on a pile of cash and still find it acceptable to have such a poor QA and development process that something could be released that corrupts displays for a number of their supported hardware -- *corrupts*displays*... not "oh Pages can't bold a layered text block", not "i wish Mail would stop checking all Mail accounts when it launches", ... - *corrupts*displays*.

Further, that it can exist for, not one but, two releases is actually kind of insulting and totally deflating, both from the perspective of a person who has liked Apple products and one who likes good development process. It feels like a big F-U to me.

Yes, I have the same problem. After upgrade to 10.9.04 the video projector I used to connect over the thunderbolt jack is not being recognized by the system anymore. This is very **** embarrassing! In Windows you can at least roll back the driver if something stopped to work. I urgently need this problem to be fixed!!!

Filed a bug report as well. As a game developer and photographer, this is severely cramping my workflow / ability to get things done. Get on it Apple. Rush an emergency fix of this alone, as this is ridiculous.

I am having this same problem too with my mid 2012 Macbook pro on 10.9.4.

I am connected to a second display using a VGA cable and I was having no problem with it until I upgraded to 10.9.4, now it will not recognize the external monitor. This is a simple issue that Apple must solve with 10.9.5, do they even look at these posts?

Hi I lost my second monitor when I upgraded to 10.9.4 from 10.9.2 a few months ago

I would like to upgrade to Max OS X 10.9.4 As I now see a new driver

Im still on OS X 10.9.2 (13C1021) which works and I can see two monitors now

ive posted on apple forum and bug report just now.

APple please help!

I have a mid-2012 Macbook Pro Retina.

My external monitor has been working flawlessly up until today (why today? - it was fine on Monday with external monitor although prior to that I have not been using external monitor since 7th August due to being away on holiday).

So yes, today I booted up as normal with my external monitor connected - a dell u2713h (Thunderbolt on Macbook to Display Port in on Monitor) and my first realisation that something was wrong was that I could not move my mouse from my external monitor left off the screen unto my Macbook... it was trapped in the external monitor. I tried changing the setting to "mirror" display and both screens went black. I couldn't undo it.. I had to reboot.

After several reboots I noticed that sometimes the Macbook screen had a faded menu bar at that top.. maybe just because it was not the active screen but everything else looked normal.

So anyhow, I'm wondering, is this caused by the 10.9.4 update?... it must have installed silently because I don't remember installing it. Or do I have some other issue?

PS, I tried the Geforce and NVDA kexts fix but no dice... although it looks like no harm done either.

What do people think?

Thanks,

/Brian

One other interesting thing:

External monitor and macbook screen both show the desktop although I cannot move my mouse pointer from external monitor to macbook monitor. When I pull the thunderbolt cable out of the Macbook *both* screens go black and there seems to be no return from this... a reboot is required. What should of course happen and has been happening up to now is that all open apps etc on the external merge with the apps that are open on the macbook screen (as the external has been disconnected). Help. :-)

I will file a bug report.. thanks

Interesting about Yosemite... I can survive on a single screen for a while no problems.. I'm just at that stage where I'm hoping I haven't messed something now in attempt to fix it (e.g. the kext fix).. don't think I have but you never know.

Did you overwrite your current install with the Yosemite Beta or how did you test it out? I won't be doing that anyhow... I find it takes courage to install the General Availability release OS these days ;-)

Good for you for keeping us right with the rules. Can I send a few points your way or somehow help you level up? To be absolutely honest I wasn't aware there was an NDA in place for Yosemite betas as I'm usually only on this forum only when the s*** hits the fan!! At all other times I'm working on a single display or out having fun :-)

Hi I lost my second monitor when I upgraded to 10.9.4 from 10.9.2 a few months ago

I would like to upgrade to Max OS X 10.9.4 As I now see a new driver

Im still on OS X 10.9.2 (13C1021) which works and I can see two monitors now

ive posted on apple forum and bug report just now.

APple please help!

I would just like to add this link I saved a while ago when I tried to upgrade to OSX 10.9.3

I thought Apple would have fixed the problem by now.

I've been a user of Apple products since Mac Plus and Im not happy right now.

Please see

http://preview.tinyurl.com/oh48t8o

The altoronto fix unbelievably also worked for me. You can see the strangeness I was experiencing in posts above and I'm on a Macbook Pro Retina Mid-2012 with a Dell U2713h monitor. Thank you very much! I can hardly remember how to work with two monitors its been that long :-)

Side effects: Not much, 1 1password firefox extension didn't work in my browser until I started the app again first, but after starting the app it works fine. Haven't seen anything else so far.