Can I use an external monitor in portrait mode?

I do not yet own a Mac, but I am doing up-front research to know what to expect.
I currently have a Samsung 204T LCD monitor (DVI) which allows rotating the display into portrait mode.
I know that OS X supports using an external monitor to extend or mirror the desktop. Can an external monitor be configured for operating in portrait mode? I would expect that this requires the video driver to rotate the display before sending it to the monitor.

I will leave this answer to my original question.
I called Apple and was completely disappointed with their answer. They indicated that they would not answer such a question, since they deemed it to be "outside of the scope of Apple support" since my question was deemed "not a consumer-oriented
question."
So yesterday, I took my Samsung SyncMaster 204T monitor to the local Apple retailer to try it out on an actual system. I specifically tried it out on the 24" iMac with the nVidia 7300GT graphics card, since that is the system I was interested in.
It turned out that this monitor works beautifully in portrait mode with the above system using Tiger 10.4.8.
So, I went and bought it!!

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How to use a secondary monitor in Portrait mode

Finally discovered how to do this. Here is how to use a second monitor in portrait mode:
Open System Preferences from your iMac dock.
Click Displays - Click Arrangement - Click Gather Windows - the secondary monitor dialog box opens.
Click Rotation - Click 90 degrees rotation for PORTRAIT MODE.
Click CONFIRM on the secondary monitor to keep Portrait mode.
Select the desired resolution. I chose 1200 x 1920.
You'll see a dialog box that says, "About to change the display mode."
Click OKAY.
Click Confirm. (If it appears. For some resolutions, I did not have to click confirm, most likely because the monitor supports those resolutions.)
Then resize the windows of the software you're using.
Done!

I too got the same. Both monitors went portrait. Then I unchecked the 'Mirror Display' option in the Arrangment tab of iMac display and voila. Got what I wanted.

Can I use an external monitor as an extension to my workspace

Could anyone please tell me if I can use an external monitor such as an apple 20” or 30” display as an extension to my workspace. I am using an apple 17”1.5 power book & I would like to drag & drop[p photos etc. from one monitor to another etc.
17"powerbook 1.5 Mac OS X (10.4.6)

yes, when you connect an external display you can either mirror the laptop display, or have it act as an extended desktop
this needs the mac to support extended desktop rather than just mirroring, for instance i think ibooks can only mirror but powerbooks can do both

Can I use an external monitor/clamshell mode PERMANTENTLY?

What I'm trying to do is take my old TiBook 550 with its malfunctioning screen and busted hinges (grrrr) and effectively turn it into a low-budget version of a Mac Mini i.e. hook up a USB keyboard and LCD monitor to it and use it as if it were a desktop.
Now I have successfully attached the monitor and keyboard, turned on video mirroring etc. and it's all working fine. No problems with getting the thing to work. The only problem is I am having to keep the PB screen open slightly so that I can shut down and boot up for each session (for various reasons I don't want to leave it in sleep mode). Even though I bought a keyboard that has a USB power button on it, I am still unable to use it to boot up (I can shut down though).
As I understand it 'clamshell' mode only allows you to put the computer to sleep, so is there any way I can permanently tell the PB to ignore the on board LCD and only use the external display? My ultimate goal is to just have the PB sitting out of the way, lid closed (or lid removed??), whilst I use the keyboard and external display PLUS be able to shut down and reboot without having to prise open the screen, which is now quite damaged. Any ideas? TIA.
Powerbook G4 15 1.5Ghz Mac OS X (10.3.8)

Hi there,
I think you're right - Shutting down works via the keyboard but not Boot Up. It's weird because I'm sure I remember being able to do this once in the dim and distant past but maybe I'm wrong.
Anyway I've now hooked up my old laptop so that the screen is held ajar so I can reach the power button. After some research, I found out that the laptop should not be used with the screen closed for long periods anyway because of heat issues so this inelegant solution is probably the best in terms of keeping the temperature down.
Now what I need is some safe way of permanently disabling the display so that ONLY the external monitor works. If there was some way of doing that, at least I would not be wasting energy powering the original LCD. So far I have been able to disconnect the cable on the back of the screen that sends the 'data' to the LCD, but I've not yet been able to disable the back light.

Can I use any external monitor with HDMI connection

Am I able to connect any external monitor from Dell or Samsung to my Mac Book Pro w/ Retina display (late 2013) via an HDMI connection ?

Yes

5k imac + 4k external monitor in portrait mode

I was told that the new 5k imac can support one external 4k display via thunderbolt, but the 5k imac cannot itself be rotated into portrait mode (on a vesa mount for example). If I connect an external 4k display via thunderbolt to the new 5k imac, can the external display be rotated into portrait mode so I can have 3840 pixels vertically on the 4k display?

They are right about the increasing of rpm. However I am not sure about the cause of this problem. This is a issue I had on my 27-inch iMac Late 2013 and there is two ways you can try to fix it:
1/ Rotate the display at 270º rather than 90º
2/ Use an application compatible with your system to monitor and control your fan speed

Can I use 2 external monitors with Satellite M70?

Is there any chance to connect to PC (M70-131) 2 outer monitors? Triyng to do this via video splitter I have only 2 monitor configuration mode, instead of 3 as it should be.

You own a VGA splitter. This device can only copy the SAME image on two monitors.
but,...
you want to have totally three (3) independent pictures produced by your notebook.
Yes, that's possible. You will only need to purchase an USB Video Adaptor for your notebook (or desktop).
They are not very expensive (around 100 Euro) and allow you to do amazing things with your applications.
Here is a link of such a device (This picture is meant as an EXAMPLE ONLY, it might not be the BEST device to buy for your requirements).
http://anonym.shareinside.net/?http://www.xkeys.com/viewport.php
Please remember to compare the supported resolution/color-depth of such a device.
Regards,
electrochain

When I close my laptop lid and it goes to sleep so that I can use an external monitor, monitor does not turn on when I hit a key to start laptop

When I use my external monitor, I cannot get it to work after awakening my laptop using any key. My monitor won't light up although laptop keyboard is backlit showing that it has come out of sleep mode. Why does the monitor not get the signal from the laptop?

I still cannot figure out why it doesn't always work. All parameters were met and my bluetooth keyboard is set correctly to wake the computer. My keyboard becomes backlit, but my LG monitor does not pick up a video signal and is black and my laptop monitor is off. The only way I can get out is to hold on button on laptop until it shuts down and I can start up again. This happens on an intermittent basis. Sometimes it works and other times I get black screens. I need to know if I can use command F1 to get the laptop to detect the display or is their another key combination to send the signal to the external monitor when I can't see anything because I hate to do a hard shut down to get out of this mode! Please advise!

Can't see post on a Presario CQ56-219WM while using an external monitor

I can't see any post info on a Presario CQ56-219WM while using an external monitor. The built-in monitor has been broken for some time and I've been using an external monitor via the vga port. Recently I had an issue with Windows and must now perform a system recovery. Whereas the built-in monitor does light up there is no portion that is viewable. It's damaged in a way that has everything totally distorted. I disconnected it hoping that the system would reroute directly to the external but unfortunately it didn't. I'm confident that my tinkering inside the laptop wasn't a factor since prior to disassembly the external monitor was never active until the system booted into Windows, plus I can reconnect the built-in monitor and it still lights up just as it did before.
Is there any known keystrokes to activate the external during post?...other than the F4 key

Hello Kerdomrikman,
Welcome to the HP Forums.
In regards to your question on known keystrokes to activate external during post, there aren't any. The graphics won't switch to external until after the post.
What you can try, if your able to veiw the BIOS on the external you can run diagnostics from there.
I hope this answers your question. Thank you for posting on the HP Forums.
I worked on behalf of HP.

Can macbookpro be used with the lid closed while using multiple external monitors

I want to use macbook pro with external monitors and be able to close the lid on the laptop, but can't figure out how to make that works with multiple monitors. I currently use two external monitors with the laptop monitor as my third. All are independent monitors and I accomplish this using the matrox diamond bvu-195 product (one for each external monitor). Now I would like to add a third external monitor and be able to close the laptop lid - kind of like you would do with a docking station for a Windows laptop. Anyone have any suggestions as to how to accomplish this?

Connecting your present two external displays via USB has left your MBP's Mini-DisplayPort available for a third. Depending on the monitor's available inputs, buy a mini-Displayport-to-VGA, MDP-to-DVI, or MDP-to-HDMI adapter and the appropriate cable to make the connection. I would expect that adding a third monitor to your GPU's workload might cause your already slow USB-connected monitors to slow down farther, but you'll have to see whether that's true and, if so, how tolerable it is in your work.
As for what will happen when you close the built-in display, I suspect that what happens if you do that now will continue to happen if you do it with a third monitor connected. If you can now close the display and run the machine in closed-clamshell mode, I expect you'll still be able to do so after adding the third external screen.

How do I use an external monitor with my MacBook??

Hi,
I recently purchased my MacBook, but when I am at home, I want to be able to use my MacBook like a normal computer, by plugging a keyboard, mouse and my existing LCD monitor to it.
What do I need to purchase to enable this and what system settings do I need to adjust to get my monitor to work?
Could I have my laptop closed while i am using my external monitor? How do I do this? I don't want my MacBook open, while I am using my monitor!! Can someone please give me a simple step by step guide on how to turn on and use my laptop which my external monitor plugged in.
Thank you very much for your help.

Can you read it ? http://discussions.apple.com/thread.jspa?messageID=3510076&#3510076
Shortly,yes,if your Display connected,just close it and than click the mouse it'll wake up in external display.

Satellite P100: Can I connect two external monitor to VGA & DVI port at the same time?

The Satellite P100 comes with two external monitor port. A VGA and a DVI. Can you have have two external monitor working at the same time? Can you have two external monitor as well as your internal display working at the same time (for a total of 3 display at the same time?
Here is what I have confirm:
Internal display + DVI connector display
OR
Internal display + VGA connector display
Is it possible to have:
DVI connector display + VGA connector display?
OR
DVI connector display + VGA connector display + Internal display?

As far as I know this is not possible and you can use either DVI or VGA port.
For signal output can be used only one port for external display.

Use two external monitors

Hi Guys!
I am using a MacBook Pro early (2011), i also use an external Monitor. (Works fine -> mini displayport dvi adapter) !
Yesterday, i tried to connect an older (VGA, i did not want to throw it away) monitor too, in order to use 2 Monitors + MacBookPro-Monitor!
Is there a way to use these two external monitors?
Thanx guys for your help, if this topic was discussed in the past, i apologize for this extra entry (May you can show its link)
Greetings from Austria
theFlow

Hi MarcusL,
Welcome to the HP Community, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I saw your post regarding using the two external monitors. You should be able to connect both. I have included two documents below depending on your operating system that will show you how to do it.
Connecting a Monitor, Projector or TV (Windows 7)
Connecting a Monitor, Projector or TV (Windows 8)
Thank you,
Please click “Accept as Solution ” if you feel my post solved your issue.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
Thank you,
BHK6
I work on behalf of HP

HP Laptop+Dock - Need to use 2 external Monitors

Setup: HP HDX 18t with HP xb4 docking station.
Issue: with the computer docked and the lid closed, how can I get dual external monitors to function in extended mode? The problem lies in the cable that attaches the dock is too close to the laptop's vga port so I cant use both, the vga port on the laptop + the one on the dock. I tried a StarTech USB2DVI but it wasnt stable, and died after only 2 days. I am willing to replace the docking stations if need be for one that supports dual monitors directly, but hp consumer products doesnt have one. How about using HDMI to DVI cable/adapter plus the video out on the dock? What would happen to the external speaker jacks if I did this? Anyone have a solution that has been verified? HELP!

I think you might need a VGA adapter that splits the connections into two. Not sure where they can be bought, however.
*******DISCLAIMER********
I am not an employee of BBY in any shape or form. All information presented in my replies or postings is my own opinion. It is up to you , the end user to determine the ultimate validity of any information presented on these forums.

Is it possible to use 2 external monitors?

Hi,
My name is Joe Chaplow, and I am new to the forum. Hello all.
I want to set my Macbook Pro 15inch Mid 2009 model (2.8ghz with 512 dedicated vid ram and 256 for power saver mode) up so that I use two external monitors. I want to mirror the desktop (so I can slide programs from one screen to the other). If i use the mini dvi to dvi adapter and split the adapter, would this work? Thanks in advance.

No, splitting won't work. You will find a discussion about the use of USB adaptors to use multiple monitors here. Here is another article.
Matrox makes a special adaptor for adding multiple monitors to laptops.

Can I use an external monitor in portrait mode?

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