I can't use dual monitors since upgrading to Lion

I use my HD TV as a second monitor for streaming movies etc. Since upgrading to Lion, I can only use one monitor at a time. Is anyone else having this problem?
Thanks

Yes, the blanking of secondary monitors is an issue.
In fact, it is the reason why I went back to Snow Leopard on my 3-screen iMac
I encourage you to contact Apple with feedback
I have taken the following actions:-
Provided feedback to Apple viahttp://www.apple.com/feedback/aperture.html
Provided feedback to Apple viahttp://www.apple.com/feedback/macosx.html
Submitted a bug/enhancement request via my free Apple Developer account
Written to pretty much every mainstream Mac publication
Encouraged every poster, like yourself, to raise this with Apple in your own words
Next week, I will call Apple Support under the AppleCare agreement for my iMac
Please give them feedback, and we might get this silly design decision changed.

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Can I use dual monitors in Premiere Elements 10?

I've been using Vegas Movie Studio until now. And I wonder if I even in Premiere Elements can use dual monitors. Not just to pull over the viewing part of a screen. But watch the movie in a small window on one screen with the timeline and still have the movie in full screen on the other. As this (in Vegas Movie Studio).

Yes, you can use dual monitors with but a few little tweaks, perhaps some tweaking of the OS (what OS are you using, BTW?) and then a tiny bit of work in PrE's Workspace.
In PrE, you will want to Undock Panel Headers, and this will allow you to drag almost all Panels, to suit your needs. Note: the Timeline's position is locked, but I think that is the only Panel, that behaves that way.
Now, you might need to set up your display in your OS's Control Panel>Display, but that should be easy, and has probably already been done, if you were successfully running Vegas in the dual-monitor environment.
I think that just Undocking Headers will get you where you want to go.
Good luck,
Hunt
PS - others might have a few more tips for you. While I run PrPro on my dual-monitor system, I only have PrE on my laptop, and PrE has a few differences, and limitation, than does PrPro. Trust what others, like John T, Steve and Neale tell you.

Can you use Dual Monitors on an HP Pavilion "All-In-One" Desktop?

Hello,
Just seeing the words "dual monitors" on the forum makes me realize I have several extra flatscreen monitors sitting around and I always loved them at work. I have an HP Pavilion All-In-One Desktop and is it possible to run dual monitors on an All-In-One desktop and what would I need in the way of accessories (cables, etc.) to be able to do that, if it's possible? Thanks in advance for any help!

Hi,
What is your AIO computer ? Many AIO computers do not have video out ports. You can use something like:
http://www.amazon.com/IOGEAR-External-Video-Interface-GUC2025H/dp/B004OA73PW
Regards.
BH
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Can't use dual monitors

I have an HP ENVY Desktop - 700-515xt CTO. It has 1 DVI input, no VGA input. It has the Intel Integrated Graphic. I want to use 2 monitors (am using Windows 7). I tried using a DVI to VGA dual cable, but it says the 2nd monitor is not connected to the computer.
How can I use a 2nd monitor?
Thanks -
Greg
This question was solved.
View Solution.

Hello @gregw54,
I understand that you are looking to use two monitors on your desktop computer, and I would be happy to assist you in this matter!
To ensure that your display environment is configured correctly, I recommend following the steps in this document on Using Two or More Monitors with One Computer in Windows 7.
Please re-post with the results of your troubleshooting, and I look forward to your reply!
Regards
MechPilot
I work on behalf of HP
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Elements 12 - can it use dual monitors?

I've just purchased and installed Elements 12 on my new computer which runs Windows 8.1.
I would like to work on my digital scrapbooking page on one monitor and view the elements and papers from digital kits on the secondary monitor. Does anyone know if this is possible?
Thanks,
Barb

Working with dual monitors is possible :
http://www.elementsvillage.com/forums/showthread.php?t=79587&highlight=dual+monitors
I can't say much more, since I have only made a successful trial, but I don't have enough space on my desk to work with two monitors

Can I use dual monitors on a HP 8425f

Is it possible to connect dual monitors to an HP 8425F ?
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Kaymac2, welcome to the forum.
You would have to add a discrete "PCI Express x16, video card" that has two connectors; DVI-D, DVI-I, HDMI, etc. The Integrated Video is not available when a video card is installed.
Adding a video card may require a power supply unit (PSU) upgrade, as well. Most mid-level video cards require a minimum of 400W to operate properly. The PSU in the computer is 350W.
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I can't use some software since downloading Mountain Lion. Help?

I can't use Adobe Flash (vers. 8) anymore because it's a PowerPC applicaiton, and I can't log onto the World Community Grid anymore and, when I tried to reinstall the software, I was told that it "can't be opened because it is from an unidentified developer" and that I need to alter my security preferences. I wasn't able to find anything in System Preferences that could help me. Also Spaces has disappeared, and that was an incredibly useful tool for me. Anybody know what I can do? Should I just uninstall Mountian Lion?

Captfred is pointing out a very good thing, which is the middle tier option of allowing only app store and signed developers. This is a pretty good tool and put there for the ease of security.
Although I have experienced some apple software that doesn't have a signed security clearance either
Hence my setting. Keep constant remote backups!
I had a sneaky suspicion you were referring to Flash.app and not just the player. You will also have to get it on there. They offer a 30 day trial period, and with CS6 things are a lot faster and a lot smoother!
I highly recommend anyone to upgrade to the latest line if they are coming from an older version. Things are where you expect them to be and improvements have been made to the way it processes and loads!
Check out Flash here:
http://www.adobe.com/cfusion/tdrc/index.cfm?product=flash

Has Firefox been optimzied for the new Mac OSX Lion? I've been having issues using the browser since upgrading to Lion. Issues include using some websites as well as google e-mail...icons do not appear etc.

when checking mail in google I am not able to 'star' an e-mail or mark it etc. I don't get the option to do that, as I did before upgrading to Mac Osx Lion

Try setting up another admin user account to see if the same problem continues. If Back-to-My Mac is selected in System Preferences, the Guest account will not work. The intent is to see if it is specific to one account or a system wide problem. This account can be deleted later.
Isolating an issue by using another user account
If the problem is still there, try booting into the Safe Mode using your normal account. Disconnect all peripherals except those needed for the test. Shut down the computer and then power it back up. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. When you reboot normally, the initial reboot may be slower than normal. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart by using the application un-installer. For each disable/delete, you will need to restart if you don't do them all at once.
Safe Mode
Safe Mode - About

HT1338 i can't access my pictures since upgrading to Lion. iPhoto gets stuck on building thumbnails.

Does anyone else have issues with iPhoto after installing Lion?

You can't. When you converted those libraries to Lion's format, you lost the ability to go backwards. Unless you saved a bootable backup./clone or Time Machine backup of your previous SL installation, you're up the proverbial creek w/o a paddle.

Why can't I receive mail since upgrading to Lion?

I've tried the solutions given to other people with this problem but I keep getting the following error message: 'The server “p99-imap.mail.me.com” refused to allow a connection on port 143.' Strange. The problem is restricted to my Macbook Pro. The iMac and iPad are unaffected.

Thank you so much, Glenn! (And thank you Google for finding this thread for me.) While I have no idea how or why it worked, it got rid of the dreaded warning symbol and error message.

Ever since upgrading to Lion my iMac opens to a different admin than the one last used and has to be switched. How can that be changed?

How can I change which user boots at start up? Ever since upgrading to Lion X my iMac no longer opens to the user on it prior to shut down. It now opens to a user who is virtually never on - which is actually me under a different name. This division of my Mac happened when I switched to my new Mac and didn't know I had to use the same name to transfer my data. My old data is listed as a separate user. Over time my old user name brings up a window full of ???? at the bottom. It looks like no apps ever upgrade there. It is driving me crazy to have to now switch back each time I start my computer. (I am using an iMac with 3.06 GHz Intel Core 2 Duo processor).

How can I change which user boots at start up? Ever since upgrading to Lion X my iMac no longer opens to the user on it prior to shut down. It now opens to a user who is virtually never on - which is actually me under a different name. This division of my Mac happened when I switched to my new Mac and didn't know I had to use the same name to transfer my data. My old data is listed as a separate user. Over time my old user name brings up a window full of ???? at the bottom. It looks like no apps ever upgrade there. It is driving me crazy to have to now switch back each time I start my computer. (I am using an iMac with 3.06 GHz Intel Core 2 Duo processor).

Can someone tell me why, since upgrading to Yosemite, I keep getting a message window saying "Another device on the network is using your computer's IP address?"

Can someone tell me why, since upgrading to Yosemite, I keep getting a message window saying "Another device on the network is using your computer's IP address?"

That may be what is a fairly common problem of 2 devices mistakenly assigned the same address. Try shutting off all of the devices connected to your router, reboot the router and then the devices connected to it.

I have 12 core with Quatro 4000 and 5770, I want to use dual monitor setup, monitors are NEC with Spectraview-II. How do I connect? 4000 only has 1 Display Port and 1 DVI. 5770 has 2 of each, if I use both 5770 Display Ports, does the 4000 contribute?

I just bought a 12 core with Quatro 4000 and 5770, I want to use dual monitor setup, monitors are NEC with Spectraview-II. How do I connect? 4000 only has 1 Display Port and 1 DVI. 5770 has 2 of each, if I use both 5770 Display Ports, does the 4000 contribute any work at all? I read where on a PC they would work together, but on a MAC they do not.
I read that Display Port has higher band width than DVI, NEC monitors for best performance they recommend using DIsplay Port.
When I was setting this up I looked at a Nvidia Quadro 4000, unfortunately it was for PC, it had 2 Display Ports, in the Mac version they reduce it to one. I did not think there could be a difference.
Mainly want to use it for CS6 and LR4.
How to proceed???
I do not want to use the Quadro 4000 for both, that would not optimize both monitors, one DP and 1 DVI. Using just the 5770 would work but I do not think the 4000 would be doing anything, and the 5770 has been replaced by the 5870.more bandwidth.
Any ideas, I am a Mac newbie, have not ever tried a Mac Pro, just bought off ebay and now I have these problems.
As a last resort I could sell both and get a 5870. That would work, I'm sure of that, it's just that I wanted the better graphics card.
Thanks,
Bill

The Hatter,
I am a novice at Mac so I read all I can. From what I understand the NEC monitors I bought require Display Port for their maximum performance. The GTX 680 only has DVI outputs. Difference from what I understand is larger bandwidth with the DP.
You said I have the 4000 for CUDA. I am not all that familiar with CUDA and when I do read about it I do not understand it.
A concern I have is, that if I connect the 2 high end NEC monitors via the 5770, using it's 2 Display Ports I would have nothing connected to the 4000. Is the 4000 doing anything with nothing connected? I read where in a PC system the 2 cards would interact but in a Mac system they do not.
Bottom line, as I see it, the 4000 will not be useful at all to me, since I want a dual monitor set-up.
So far the 5870 seems the best choice, higher band width than the 5770, and it has 2 Display Ports to optimize the NEC monitors.
I'm not sure how fine I am splitting hairs, nor do I know how important those hairs are. I am just trying to set up a really fast reliable system that will mainly be used for CS6 and LR4. Those NEC monitors are supposed to be top notch.

Can't always connect to remote speakers since upgrading to lion

In one fell swoop I did a lot of upgrading, and ever since I haven't been able to reliably connect to any remote speakers using iTunes on my iMac. From iTunes (or the Remote app on the phone or iPad) I can see remote speakers, but I cannot connect. From iTunes, I just get the stripy progress bar, and it won't ever go away unless I cancel out. From the remote app, it just becomes unrepsonsive.
Context:
I have a iMac with OSX Lion, that I upgraded from Snow Leopard a few weeks ago. At about the same time, I updated iTunes to 10.5 from the last 10.4 release to be able to get the IOS 5 update on my and my wife's phones.
I have an Airport Extreme connected to our broadband, with 3 airport expresses in various places in our house connected on a wireless network to stereos for remote speakers. The iMac is connected to the Airport Extreme via ethernet. After upgrading the OS and iTunes, I got a notice that there was a firmware update for my two most recent airports (the Extreme and one of the expresses). They are running version 7.6 of the firmware, the other two airports are running 6.3.
There has been no change to the physical environment -- no sources of interference or anything like that. I can play music from the Music app on my phone to any of the remote speakers, there is no problem there.
About half the time, if I restart everything (wireless base stations, and then the computer) I can get the remote speakers to work. However, the next time the computer wakes up from sleep mode, I have the same connection problem described above.
Has anyone else experiences these sorts of troubles? I have seen some similar problems with older versions of all these applications and OS's -- and the solution there was to turn off ipV6 -- however, it doesn't look like that's an option now. Is this an identified bug, and is there a fix on the way? Is there anything I can do in the meantime?

Well, after some experimentation and internet-lookin', I deduced that is possibly a wi-fi problem. It seems that many people are having wi-fi problems since upgrading to Lion, and although I'm not connecting directly to my wireless network, it does form a pretty big chunk of my setup describe above.
So I tried the fix outlined on OSX Daily here: http://osxdaily.com/2011/11/06/lion-wi-fi-problems-solution-mac/
Essentially what it has you do is to create a new network location, name it, and then renew your DHCP lease. This seems to have worked for the time being.

Remote Desktop windows 7 ultimate can't use two monitors

i have two computers in another office that remote into two other computers here at my site, all 4 computers run windows 7 ultimate, about a week to 10 days ago the two remote computers can still connect to the computers at my site but can only use one monitor
not dual monitors as before the 10 days or so. The use all displays box is checked in the remote desktop client, i have two sonicwall firewalls with a site to site vpn connection between the offices that they use to remote
can't get the dual monitors to work, any help would be appreciated

Hi,
Here is a good blog talking about using multiple monitors in Windows 7 ultimate and Windows Server 2008 R2, please take a look if there are any restrict policy settings regarding the monitor numbers like: "Limit maximum number of monitors per session"
Using Multiple Monitors in Remote Desktop Session
Best regards
Michael Shao
TechNet Community Support

I can't use dual monitors since upgrading to Lion

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