Monitor no longer mirrors at full resolution

I have a 1080p monitor. The mac is not able to output to this at full resolution when the displays are set up to 'mirror' (connected to 2011 macbook pro via DVI- thunderbolt adaptor used).
Previously in Snow Leopard I was able to attach the monitor (via DVI with a thunderbolt / mini display port adaptor), close the lid of my macbook, then insert a USB device, to wake the computer from sleep mode. Upon waking from sleep, the computer would detect the external monitor and display at full 1080p resoltion. The lid of the computer could then be opened to use the laptop keyboard and trackpad.
In Lion, the above process works, however when the lid of the laptop is opened, the detect display process seems to run again and the laptop screen turns back on and the external display will no longer mirror at full resolution.
I already have an apple wireless keyboard and mouse, but am using these with another computer- so cannot use these with the laptop (this configuration would allow me to work with the laptop lid closed, and hence keep full resoltion on the external monitor). It isn't practical to get 2 wireless keyboards and mice, so I'm looking if Apple will support mirroring the display at full resolution (or indeed just the ability to turn the laptop monitor off, to allow the 2nd display to run at full resolution...)
(Works fine on the same macbook pro when running Windows 7 in Bootcamp, so must be technically feasible).

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Macbook pro stopped displaying full resolution on Dell U2713HM monitor

Hey guys,
I'm using the late 2013" retina Macbook Pro with OSX Mavericks.
I've been using a Mini DP to DP cable to output full 2560 x 1440 on my 27" Dell U2713HM.
One day while I had that monitor plugged in, I also plugged in my HDTV via HDMI for an extra screen. When I did that, it set my Dell to 1080p and ever since then I cant seem to change the resolution back to its native res.
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Any advice? It makes no sense why it was working perfectly fine for a long time and then completely refuses to do so only on mine.

I have the same setup - late 2013 macbook pro with Dell u2713hm. I've tried connecting with both a mini dp cable to dp (as included with the dell monitor) and also a hdmi cable and I get a strange result - I get full resolution but it looks terrible - pixalated and faded.
I also have a macbook from around 2009 which I can connect using a dp-dvi adapter and then the dual dvi connector that came with the monitor. It gets a lower resolution but actually looks better.
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How to get full resolution on Samsung E2420L monitor?

I bought a Samsung E2420L external monitor for my MacBook Pro. The box says 1920 x 1080, however I can't seem to get the Mac to push more than 1600 x 900. Samsung doesn't list any Mac drivers, how can I get the full resolution?
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Use extended mode rather than mirrored mode in your display settings on your computer. Uncheck mirrored". Mirrored mode mirrors your computer display, including the resolution, to the external monitor. Extended mode lets you use the external monitor's native resolution.

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There is a clue here in what might be going on. Note that the MacBook's 1280x800 display is a 16:10 aspect ratio (exactly). Now, the external resolution that is reported by shmootz is 1600x1000 which is also a 16:10 ratio. It looks to me that the system is running as if it is in the mirrored mode. The video driver will force the displays to the same aspect ratio when running as mirrored displays.
I'd try a few things to see if you can reset the display options. First, try toggling the "Mirror Displays" option in System Preferences -> Displays -> Arrangement. Second, you may want to try a reset of your PRAM and the SMC.
Here is a link to Apple's support article on resetting the PRAM:
http://support.apple.com/kb/HT1379
Here is a link to Apple's support article on resetting the SMC:
http://support.apple.com/kb/HT1411

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I also purchased a 26" external graphics monitor with 1920 x 1200 screen resolution, plugged in through the Mac's mini-DVI port.
My intended use is photographic processing (non-video).
I get a monitor message under "Display Preferences", "Usable resolution 1280 x 800" when this external unit is selected.
Can this card support the full resolution of this large external monitor?
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Santa Fe, NM

Yes, it certainly can. But your MBP doesn't have a mini-DVI port; it has a mini-DisplayPort. Exactly how are you connecting that to the external monitor?
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Hi ddickson01,
The MacBook Air 11 inch late-2010 model does support 2560 x 1600 resolution on an external display. See this specifications article for reference -
MacBook Air (11-inch, Late 2010) - Technical Specifications
Thanks for using Apple Support Communities.
Sincerely,
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Mini-dp to vga or hdmi, need full resolution

I've HP laptop which has two ports, VGA and HDMI.
I want to connect the Apple 27: display, which has the mini-dp output to my laptop. When I purchased the display, I bought a mini-dp to hdmi adapter, and connected the display to the adapter, and connected the adapter to the laptop using a hdmi-hdmi cable. But, the image is very blurry, and I'm not getting the max resolution on the display.
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Your laptop isn't compatible with the Apple 27" monitor. There are only two possible interfaces that can be used to drive the 27" at full resolution. One is DisplayPort and the other is Dual-link DVI, neither of which your laptop has.

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I want to use only my external 20" cinema display, connected to my MBP. So what I do is connect the display via the DVI cable, close the lid of the notebook, wake it up from the keyboard/mouse (now I have the full resolution of the Cinema Display), open the lid so I can use the keyboard and the trackpad. This is all right with me, but when I restart or after sleep MacBook's display turns on and is set up as primary and the Cinema Display goes to Dual View mode. Is there a way the laptop to remember the external Display as primary, so I don't always have to close the lid, wake up the laptop and open the lid.
For instance, when I've done this for the first time in Windows, I didn't have to do it again. Now every time I log in in Windows, the macbook's display automatically turns off and the Cinema Display gets its full resolution. This is what i want to be done when I boot in Mac OS.

I know both scenarios (OS X/Windows), but I'm pretty sure that there's nothing you can do about it. As long as your internal display is open while waking from sleep or booting up, it will be always on in OS X. I'm only using my external Cinema Display and keep the MBP's lid closed all the time. Of course, I use an external keyboard and mouse as well. You can only choose which display has the menu bar on it, but you can't turn it off without sleeping the Mac. In Windows the ATi/Nvidia drivers take care of your settings, but it won't be applied until you get to the Desktop, so you'll still have the internal display on while booting Windows...
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How do i export multiple full resolution movie files at the same time in final cut pro 6?

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One also has the option of using Compressor to export a version of a movie, and therein there are so many different options that if you are not confused by it I think there's something wrong with you. Moreover, it would appear that there is no equivalent of exporting a full resolution version of a file in Compressor. Fair enough: a full-resolution file involves no compression so is not appropriate for "Compressor." BUT, suppose you want to export multiple uncompressed, full-resolution movies at once. When you use Compressor, you are able to create batch lists and export many things at the same time, for instance, lists that will take many hours to complete so you can go to bed and get the results the next day. But as far as I can tell there is no way to do this at full resolution without compression. Instead you have to sit at the computer waiting for each one to finish and after each one, manually go to the next and select "export Quicktime movie." Even if there is a way to do this I would complain that such an obviously desireable thing is so unaccessable. In fact, the only reason I've typed out my question at such length is because I'm stuck here waiting for each one of my movies to export.
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what you're missing to export multiple files is the batch export command available in the file menu or by control clicking on the items in the browser. You can export multiple sequences/clips at full resolution with this.
This has been available in fcp for a long long time.
Wow, you are right. Now that you mention it, I can't believe I never noticed that. Thanks.
Only if you have the 'Self-Contained' box checked. Otherwise you'll end up with a reference movie.
Correct. That box is typically checked by default. There are other default settings you could change that would not result in a full-quality version, but what I meant was hitting that option from the pull-down menu, then changing nothing and hitting ok.

After upgrade to Mavericks, AppleTV no longer mirrors my mid-2012 Macbook Pro's accessibility zooming.

Prior to Mavericks upgrade, I had accessibilty zooming enabled using the control hotkey with two-finger scroll.
The zoom effect would be duplicated in AppleTV and transmitted to an overhead projector in my classroom.
This feature is very useful for directing student's attention to a particular region of the screen.
However after the upgrade, AppleTV no longer mirrors the zooming effect.
I can see the zoom on the laptop, just not on my projector.
I can see zooming on the projector if I use the VGA adapter and plug directly into projector.
Laptop:
mid-2012 Macbook Pro
OS X 10.9
8gb RAM
2.3 GHz Intel Core i7
Have tried variety of displays settings and none work including:
--selecting best for display or AppleTV
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AppleTV
model: MD199LL/A
software: 6.0 (6646.65)
resolution: 1024x768 60hz (my projector requires this)
Projector:
HP vp6320
I use an HDMI to VGA/Audio adapter to convert to VGA for my projector.
I seem to recall that overscan correction was an option to set under Mountain Lion, but I can't find that when doing a Spotlight search in System Preferences. Not sure if that would help or not but thought I'd mention it.
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Same problem. Zoomed image will not show on the Apple TV screen even though it does show on your laptop or desktop.
I tried every aspect of System Preferences>Displays and Accessibility. None worked. Problem was presented to an Apple Specialist on his Mavericks computers and his Apple TV. Same thing. He said this appears to be a Mavericks glich and immediately went to transmit the problem to Cupertino.
A poor "work around" is to use System Preferences>Accessibility and under Zoom, select Zoom Style "Picture-inPicture" which will result in a "zoom box." The box can be scaled to a desired size and activated with the Control-Scroll motion. This box will display zoomed on the Apple TV screen. The default Zoom Style selection "Fullscreen" did not and will not show on the Apple TV screen even though it does show on your laptop or desktop
The problem: the zoomed "magnified" image loses resolution and if zoomed far enough, becomes "pixilated."
 Apple needs to fix this or tell us how to go back to the earlier Control-Zoom which I think the "Fullscreen" was intended.

HDMI to DVI adapter not allowing full resolution when using Mac OS but does with Windows 8.1

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Humm... the dual Samsung 21.5" monitor setup on my 2010 Mac Mini running Mavericks works a expected.One is on the HDMI to DVI adapter and the other in on a Kanex Mini DisplayPort to DVI adapter.
Try > Display Menu from the Mac App Store and see if you can select 1920 x 1080 for both monitors using it.
Addtitionally, are you sure that it the HDMI to DVI monitor that is not getting the correct resolution...? Most people are complaining that it is a VGA connected monitor that is not getting the correct resolution.
If it turns out to be VGA connected monitor, then try using a Mini DisplayPort to DVI adapter and DVI cable for that monitor instead of VGA.

How to run acer b276hul in full resolution

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Problem seems to be solved by the following:
1) Used third-party miniDisplayPort-to-DisplayPort cable; plugged DisplayPort end into monitor
2) Restarted MBA in "Safe" mode (hold Shift key upon MBA start up)
3) Go to Displays in System Preferences
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Monitor no longer mirrors at full resolution

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