Intel Mac :: Screen Resolution Reduced When Mirroring External Display
May 14, 2012
I have a 2.93 GHz Intel Core 2 Duo (24" early 2009) iMac running OS 10.7.3 (Lion) to which I have connected an Apple Cinema Display as an external monitor using a Mini Display-to-DVI adapter. The iMac is set to 1920 x 1200 resolution and the Cinema Display is at 1680 x 1050, and everything looks great until I turn on mirroring. When I do this, the iMac screen loses its nice crisp screen resolution, but the Cinema Display still looks fine. Strangely, the pull down menu for displays in the menu bar still claims that the iMac is at 1920 x 1200 and the Cinema Display is at 1680 x 1050, but I don't think this is the case. Is there any way to keep the iMac at the higher resolution while mirroring?
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Aug 6, 2010
I have a 27" imac and have been using an apple led cinema display with it. I have had no problems with the display until today. Yesterday I installed windows 7 via bootcamp and had some trouble with the second display being detected but after downloading all of the bootcamp updates it worked fine. Today I restart my computer back into OSX and the display does not work. I tried resetting the PRam or whatever but that didnt do anything. When I go to system preferences > display there is no longer an option to detect display and there are no longer options to change the screen resolution.
I spoke with an apple tech who has me installing an update but I dont think she really knew what was going on and I doubt this will work. When I reboot back into the windows partition the display works during start up and I see the windows logo. So I dont think its a hardware issue (also the display still works fine with my macbook pro). But as soon as startup finishes I get a black screen. Under the control panel windows still recognizes that there is a 2nd display attached and you can still drag items over to the other screen, I just cant see anything. All black.
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Jun 25, 2014
I'm trying to write an AppleScript to change the resolution of my external display from 1920x1080 to 800x600 and back to 1920x1080 (it has a few issues and this fixes them, but I'm tired of going into System Preferences to do this all the time). I can get the script to open up System Preferences and option-click the scaled button (so all of the different resolutions come up), but I can't get it to select anything inside of the box where all of the different resolutions are (I can't find what I'm supposed to refer to it as anywhere and if I find something it doesn't work). Here's the code I have right now:
tell application "System Preferences"
reveal anchor "displaysDisplayTab" of pane "com.apple.preference.displays"
end tellÂ
tell application "System Events" to tell process "System Preferences" to tell window "LCDTV16"
[code]...
I have a 15" Mid 2012 MacBook Pro (non-Retna) running OS 10.9.3.Â
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Mar 3, 2009
Have I missed something, or has the "new" iMac's 24" screen been reduced in resolution?
Update: Looks like their res info has been wrongly entered if one scrolls down on this page: [URL]
Going to the "Compare" page shows the higher res spec.
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Dec 7, 2014
Am having issues with mirroring my display to my apple tv via Airplay mirroring. I am able to airplay via iTunes movies/videos but can't get the mirroring display function to work.
Info:
iMac with Retina 5K display, OS X Yosemite (10.10.1)
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Feb 9, 2010
When I attach a PDF or JPEG file to an email, the resolution of that file is automatically reduced. What do I need to do to keep the resolution?
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May 18, 2009
I have a 24" external display and since 10.5.7 I cannot use it with the native resolution (1920x1200), the maximum I can pick is 1920x1080.
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Jul 28, 2010
I have an 28 inch Dell LCD screen that has a native resolution of 1920x1200. Does the MBA support that resolution through the Mini DisplayPort? The specs on the Apple website list the following:
"Supported resolutions: 1280 by 800 (native), 1152 by 720, 1024 by 640, and 800 by 500 pixels at 16:10 aspect ratio; 1024 by 768, 800 by 600, and 640 by 480 pixels at 4:3 aspect ratio; 720 by 480 pixels at 3:2 aspect ratio". But I read that the MBA can also do higher res.
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Dec 1, 2014
I'm in the market for a new external display. I believe I have 3 options with the Thunderbolt(not mini-display)port on my Mac.Using my mini-displayport to VGA adapterUsing my mini-displayport to HDMI adapterUsing just a thunderbolt cable.I believe that there are Thunderbolt displays on the market (AOC has a 21:9 one I believe).
What is the maximum resolution for an external display for my MacBook Pro? Does my mac support 4K? Does it support 21:9? Specifications of my MacBook:
-MacBookPro9,2
-OSX 10.9 Yosemite
-13" mid 2012 not retina
-250GB SSD
-16GB RAM
-Intel HD Graphics 4000 1024 MB
Info:
MacBook Pro, OS X Mavericks (10.9)
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Apr 26, 2010
I have a Macbook Pro I bought new in June 2008 (Not Uni-body). It's a 15 inch with the standard options. I want to make a desktop setup on a budget and I'm wondering if my MBP will fill up this display at the complete resolution (1920 x 1080) and if it will function completely with the peripherals on the monitor. [URL]. Here is the display I'm looking at. Seems like a good deal, but I haven't done a lot of shopping around. I don't do graphic design and as I said, I'm on a budget, so the Apple displays are out of the question.
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May 7, 2012
I have the latest model of macbook pro 15" (entry-level one) and since a few minutes ago the screen has gone mad. It seems it has gone to lower resolution and the desktop doesn't fit on the screen anymore. I have to drag the mouse to the edges of the screen to see the parts that are hidden. I tried SMC reset, PRAM reset and it didn't fixed it.
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Jan 11, 2011
I have an Acer 22" display (the x223w) that I have been using with my old powermac g4 for a few years and its been great. I recently got an Aluminum macbook and wanted to use the display with it at my desk. I got a cheap mini display-port to DVI adaptor from amazon and when I plug it in, the display looks a bit fuzzy! It is set to the same resolution as when it was hooked up to the powermac, but everything looks a bit bigger (doesn't this mean the resolution is lower?) and the text especially looks a little fuzzy. Is it the cheap adaptor? I have it set to 1680X1050 on both computers. I feel like I just want to adjust the sharpness, but the display doesn't have that option. Also, it seems weird since it looks fine with the powermac.
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Feb 3, 2010
I have my MacBook hooked up to an external monitor of 1920 x 1080 resolution. I don't use the MacBook screen at all. Every time I turn on my MacBook it displays on the external monitor as it should, but at the MacBook's 1280 x 800 resolution, which obviously looks nasty and stretched on the big monitor. I fix this by simply putting the Mac to sleep and pressing a key on my keyboard to wake it up again; and it loads in the proper resolution. Is there a way to make it display 1920 x 1080 on boot up without having to sleep and wake every single time? Keeping my MacBook in sleep mode when not in use isn't an option.
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Apr 20, 2010
I've just bought a MBP 15" and am wondering if I can connect a 24 inch monitor too make it a extended display. Can someone make a recommendation on what monitor (24 inch) display to buy? And Which connector to get so I get full resolution on the external display?
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Jun 7, 2010
I got a Matte screen 2010 MBP. It comes with higher res screen. I personally find the text to be a little bit too small for my liking. Is it possible to uniformly make everything bigger so the higher res only make image and text sharper and not smaller than original resolution?
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Apr 19, 2012
Since downloading the new OS Lion10, my screen display continues to change resolution (+4x) without any prompt, changing to a new app is the only way to go to the original resolution… Is there a setting that needs to be changed to stop this from happening
Info:
Mac Pro, Mac OS X (10.7.3)
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Sep 20, 2010
I've got a Samsung LCD HD TV with the resolution 1366x768 My TV (nej means no, and ja means yes), and a Macbook Pro 13" (2010 version, 2,4 GHz). I connect those two with a standard VGA cable, but I can't get the right resolution (1366x768). I've tried to make my Macbook sleep, so my TV id the primary screen, but I can't get the right resolution. 800x600 is the lowest, 1900x1080 is the highest, and the closest to 1366x768 is something like 1340x760 (not exactly that number, but it's pretty close). Can I get 1366x768 resolution my TV when I connect my Macbook?
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Dec 27, 2008
I got a penryn MBP with up to date drivers and I just picked up a Samsung T220 1680x1050 that works fine in OS X but I can't seem to get this resolution to work right under XP. It does not show the whole screen and when the cursor moves to the edge of the screen it scrolls/pans from side to side like it doesn't fit.
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Mar 4, 2007
I just purchased a Mac Mini and am using a DVI to HDMI cable to connect it to my 42" Sony KDF-E42A10. I am unable to achieve full-screen resolution and downloaded SwitchResX to manually adjust the display. Does anyone know the timing parameters for the Sony or how to achieve full-screen resoltuion?
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May 8, 2012
When I was on Snow Leopard I was painting in Photoshop in 16-bit mode on my 21" Wacom Cintiq.It was a fantastic experience to finally have true control in settle changes in hues and shades all over the spectre.
Now that I've updated to Lion, the screen doesn't display true 16-bit graphics anymore, but instead there is pretty noticable banding. A sort of real-time downsampling in bit-depth going on. Even flickering on some grey hues. I'm very sad about this, and it's affecting my work.
I have a hunch Lion is harder on old graphics cards than Snow Leopard was.
Is my machine too old for displaying true 16-bit/ 32-bit graphics with Lion?
In the system info under the graphics card it says: 32-bits color (ARGB8888), but it clearly isn't the case in terms of what is sent to the display.Â
MacBook Pro, late 2009, 8GB ram, 2,66 GHz Intel Core 2 Duo, Unibody
NVIDIA GeForce 9600M GT 256 MBÂ
What I've tried so far (without solving the problem)
Closing Macbook screen to run only one display (Cintiq) (to save graphics memory, I thought) - no change.
Trieid displaying the same 16-bit image in different apps: Photoshop, Preview, Quicklook, Pages - no change
Forced monitor into "billions of colors" using SwitchResX - no real changeÂ
Anyone who knows more about this?Â
I will now try:
- finding Cintiq driver updates
Info:
MacBook Pro
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Jun 16, 2012
Within the past week something changed after running a Mac software update that resulted in only having 2 display resolution options. The display choices now are limited to 1900 X 1200 and 960 X 600. I think this happened after having a Mac software update. I don't know what the updates were other then they were suggested as part of the automatic software updates check.Â
Running OS X Lion version 10.7.4.  Graphics = NVIDIA GeForce 7300 GT 128 MB. I have rebooted and checked for additional updates put still only seeing 2 choices. why all the other resolution options disappeared?Â
Info:
iMac
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Apr 30, 2012
I recently hooked my mac laptop to a display projector, and now when I log off or shut down the screen resolution reverts to a stretched view. I reset it to 1280x800 in System Preferences-Display, but it keeps changing back. I'm running OSX 10.5.8
Info:
MacBook (13-inch Early 2008), Mac OS X (10.5.8)
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Jul 14, 2010
I'm thinking of getting a MBP 13'', together with an external display. That way I get the portability of a MBP 13'' while maintaining an in-house big external display and 400$ in my wallet, only losing a bit of processor power (which is found negligible by most users).
My question has to do with resolution. MBP 13'''s resolution is 1280 by 800, right? My question is: if I buy a display with higher resolution, will I be able to enjoy that resolution? Or no matter how big my external display's resolution is, will I always be stuck with 1280*800?
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May 9, 2012
I have a 27" iMac and have connected a Philips 160e as a pallette monitor via a Mini Display Port to VGA adaptor. the iMac sees it but auto picks the wrong resolution 1280 x 1024 (stretched) instead of the Philips' 1366 x 768 @ 60Hz.
If I try to change the resolution the screen goes black which is symptomatic of using the wrong refresh rate, and of course I can make no further adjustments. esc does not get me out of the black screen.Â
What is worse the iMac seems to remember the wrong resolution/refresh rate after restarts.Â
I have tried Safe Mode (it stayed black) and booting off an external hard drive into another system (back into black if I change the display settings).
I have gone into System Preferences > Display > Color >unchecked 'Show profiles for this display only' > selected > Philips 160E in the list
It only contains .icc profile information, which I suppose is to be expected but is the only access I can find to any specific model data. The same display works fine with an older 24" iMac, using a different adaptor because of the different display port.
Somewhere OSX is storing the settings for the external monitor, I'd love to be able to trash it or change it back.
Info:
iMac, Mac OS X (10.7.3), The closest you'll ever get to there, is here.
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Feb 25, 2008
I have three Hard Drives installed in my Mac Pro. The original one and two aftermarket. They total around 850 GiB. I have them divvied up into 5 partitions. If I wanted to Mirror them onto ONE external 1TiB Drive, what are my options? Is it a backup only type of thing, or are there options to do a real time mirror like RAID-1?
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Mar 25, 2012
I have been having some problems with my Macbook Pro. I have a new BenQ screen connected to it via the Mini Display Port to VGA adapter from Apple. No matter what I do, I cant seem to be able to change the resolution to anything higher than 1280x1024, which is a pretty stupid resolution to have on a 27'' monitor. Sometimes when I plug it in, it gives me the option to change the resolution to 1920x1080.
But when I select it, the screen goes black and displays the message "No signal detected". Now, as it happens, I have a copy of windows installed on a partition of my hdd, and the screen works flawlessly on it. full HD with 75 Hertz. So that shows that it is not a hardware problem, it has to be a software problem. I tried everything, including reinstalling OS X, and deleting the "windowserver" files. no success.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Sep 4, 2014
My external display (HP w2207) seems to conflict with my MacBook Pro (15 inch Retina display, early 2013) since I upgraded MacBook OS to 10.9.4.The external display works at initial boot of Mac but does not work after OS sleeps and I attempt to awaken, and while the external display is not waking, the Retina display flashes through different screen views, which only partially reflect my normal screen, or do not reflect my normal screen at all.Â
Info:
OS X Mavericks (10.9.4)
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May 28, 2010
I have iTunes and iPhoto libraries on my MBP that I would like to mirror to my external/Airport HDD so that my Mac mini can access the content.
I've been using iTunes sharing function, but it doesn't sync ratings/play count/etc, and iPhoto doesn't seem to have the option.
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Mar 15, 2012
How do I stop my external HD from mirroring my iMac. I copy items to my external HD, then delete them from my desktop, then it disappears from my external HD.
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May 16, 2008
I purchased a Mac Pro sometime back to use in my office but the person in the office next to me also frequently has use for a Mac Pro and since we can't purchase two Mac Pro's now we decided to set up a system with multiple monitors/keyboard/mouse. We ran a 2nd DVI Cable and a USB Hub over to the other office and use that for a second monitor hooked onto this Mac Pro plus a 2nd Keyboard and Mouse. Fortunately the distance was not too far and it worked out well.
we're having is trying to figure out how to do the Screen Mirroring/Spanning. The Mac Pro has two video cards. Video card 1 is the Nvidea 8800 GT and the 2nd card is an ATI 2600 XT. I have the main monitor in my office which is a 22" Samsung Widescreen hooked up as video 1 on the Nvidea card. The 2nd monitor which is an Acer 19" Widescreen monitor has been hooked up to both video 2 on the NVidea card and even video 1 on the ATI.
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