Second monitor on iMac not working with Lion

I have a mid-2011 Thunderbolt 21.5" iMac. A secondary monitor is connected to the iMac with a Mini DisplayPort-to-HDMI cable (a single cable, not an adaptor and cable).
When I was running Snow Leopard, the monitor worked just fine. After upgrading to Lion, the second monitor just has a black screen, and quickly goes into power save mode.
I have already tried resetting the NVRAM (as described here: http://support.apple.com/kb/HT1379) and resetting the SMC (as described here: http://support.apple.com/kb/HT3964).
Has anyone seen this problem? Any other suggestions for solutions?

same here, just performed the upgrade to Lion and my secondary Samsung screen (direct HDMI cable) do not work anymore (I have a mid 2011 iMac 21.5'').
I have tried the tricks mentioned on the following discussion:
No Signal on HDMI TV After Lion Upgrade
ie open terminal
cd /System/Library/Displays/Overrides/DisplayVendorID-410c/
sudo mv DisplayProductID-0 DisplayProductID-0.old
Reboot after entering the commands
But it is not working, the developper clearly messed up the video output in Lion OS!!!
Let me know if you have a solution, I am reduced to single screen use in the meantime... and regret the upgrade...
Thanks

Similar Messages

External Hard Drive does not work with Lion

Hi
My External Hard Drive does not work with Lion this message appears:
NTFS-3G could not mount /dev/disk1s1
at /Volumes/My Passport because the following problem occurred:
/Library/Filesystems/fusefs.fs/Support/fusefs.kext failed to load - (libkern/kext) link error; check the system/kernel logs for errors or try kextutil(8).
the MacFUSE file system is not available (71)
can anyone help?

Hi,
See this Discussion:
https://discussions.apple.com/thread/3191198?start=0&tstart=0
Cheers,

Adobe Photoshop CS5 is not working with Lion.

Adobe Photoshop CS5 is not working with Lion. It is totally non responsive to a point where i cannot work. all other CS5 programs seem to be running well so far. any advice? if no, then how do i revert back to Snow leopard?

I had real problems with all Adobe apps - it said I needed to install a version of Jave Runtime, but kept saying that I wasn't connected to the internet to complete the action. This was not the case - I was connected to the internet.
I followed this link : http://support.apple.com/kb/DL1421 to install a version of Java and all Adobe apps fire up now. Haven't done much testing within the apps, but at least I'm further ahead than I was.
So thanks to the message boards for helping me out.
Reg

Why does Corel Suite 10 does not work with Lion OS?

Why does Corel Suite 10 does not work with Lion OS?

Either it's incompatible or it's a PPC-only application. PPC applications are no longer supported in Lion because there is no longer a Rosetta emulator. Contact Corel for support.

Safari 5.1 is not working with Lion. Will not open any websites. Solutions?

Safari 5.1 is not working with Lion. Will not open any websites. Solutions?

http://support.apple.com/kb/TS1920

How can I go back to snow leopard my epson stylus Photo TX810FW does not work with Lion

My Epson Stylus Photo TX810FW printer does not work with Lion how do I go back to Snow Leopard?

Did you try removing the printer from the queue and then reinstalling it?
I attempted to print this morning for the first time after upgrading to Lion and discovered that while everything appeared normal on my Epson printer, it would never print.
I opened System Preference > Print & Scan and deleted the printer.
I then added the printer back and it now working again. Worth a shoot first I should think.
Much easier the a downgrade.
Allan

My cannon printer worked with snow leopard but does not work with Lion

My Mf 4350d printer does not work with lion Mac OS X Lion 10.7.2., it worked with Snow leopard no problem. I am a novice with apple so can you tell me how to do any changes carefully.

Have you downloaded and installed the latest Canon printer drivers?
http://support.apple.com/kb/DL899

Tascam US-428 not working with Lion

Tascam US-428 not working with Lion - Does anybody know why and what I can do to fix it?

The Tascam US-428 is a great unit, but like all businesses, Tascam desires to keep you purchasing their equipment and not stay with your old legacy items. If they would consider servicing legacy units, possibly most may stay with Tascam. But this keeps the machine moving when you "force" customers to upgrade their products when new technology shifts..
The "only" reason US-428 users need to upgrade and put aside the unit is if they need 64 bit functionality. I did not have crashing when I loaded Logic in 64 bit mode due to the ability to access my 8 gigs of memory...and is the "only" reason why I need to go 64 bit. 32 bit functionality is limited to 4 gigs of memory. Lion by default is 64 bit, so that is a plus.
But...if Tascam would continue to service some of the legacy units like the Tascam US 428, then some of us would not go to their competitors and may stay brand loyal. I think Alesis has something simular and along the same portability as the Tascam US 428, so some might have to jump ship with Tascam.
If enough people called up Tascam asking about the US 428 or surfs their website and looks for the US 428 (I am sure they keep track of where people are going on their site), they might reconsider....
I have been a Tascam user for may years, but "if" they would put out a driver for the US 428 for Lion, I may stay with them...but they leave us with little choice but to look for something else...they do not have something comparable to the unit right now.

My belkin play max router software does not work with Lion

Does anyone know if there will be a fix with this? My imac is only 2 months old and my router is the same age. Since upgrading to lion I have frequent dropouts and no working self-healing program. I have changed channels with some succes but it's much less reliable than pre
Thanks

Here's their reply, so the software is not compatible with Lion and no fixes in vew:
Dear customer,
Thank you for contacting Belkin Technical Support.
I understand your concern and I would certainly be happy to help you.
I regret the Inconvenience caused,
Based on the Information provided, I am afraid to state that the Belkin software doesn't support MAC OS X Lion 10.7. As there are no drivers for it. We are aware of this issue. Our Engineers are working on it. We do not have any update about the new release for MAC OS X Lion 10.7. However, will keep you updated if there's any.
Should you have any further questions, please take a moment to review our Knowledge Base at http://belkin.com/support
Please ensure that in order to reply to this email, or access any attachments, you must follow the link shown above and click 'update' at the bottom of the email to be able to respond. Do not reply to [email protected] as we will not receive your email.
Thank you,
Mousin M D
Technical Support Agent
Belkin Technical Support.

Magic Mouse not working with Lion

My Magic Mouse does not scroll with Lion. Preferences are set up correctly. What am I doing wrong? Thanks.

I've been using my Magic Mouse on and off this year, but it worked perfectly fine when I upgraded to 10.7.0. I haven't used the MM since my desk finally arrived today and in 10.7.2 vertical scrolling of the MM just won't work. It's so frustrating because of those iOS-like scrolling bars that vanish. It's SO HARD to find them to scroll and then my wrists are in an awkward position just forcing my mouse to scrolling vertically (by clicking, no gesture).
I have however noticed that when I put my MBA Rev A to sleep and wake it again, that vertical scrolling on my MM will work again for about 10 seconds. My batteries are at 100%, so it can't be that.
This absolutely *****! Apple's attention to detail on these small things have slipped. I even had an issue with iPhoto 11 the other day when I noticed that you literally have to jump through hoops to manually force face detection on photos that the application can't automatically detect on . That feature used to be so intuitive in iPhoto '09. Too many balls in the air, Apple?

Acrobat 7.0 does not work with lion

Why does my Acrobat profeesional 7.0 not work anymore. just installed Lion os. Can this be fixed? Do I have to buy another version?

Acrobat X Pro is the only version Adobe states works with Lion. You'll have to upgrade.

How to upgrade ms office not working with lion (20004)

what should I do, if after upgrading to lion my ms office is not working
is there any alternative working with Lion, what is not to expensive
Thank You for tips

Upgrade to Office 2011 (not free)
Install Open Office (free)

Keynot does not work with Lion OSX 10.7.2

First there was the problem with the hidden Library/application Support/iWeb/domaines, which is an important problem for me as I use my web site to show people what kind of work that I do (videos with still photography); now there's the problem with Keynote, which does not even open with Lion OSX 10.7.2. Up until now, I was using Keynote to do my video projections in small town halls. I use Protools for the sound and Final Cut (that's another problem!) for the photos and then do a Quick Time session which I put in Keynote. It was working just fine - until Lion came along.
It seems to be well known that Apple is going to discontinue iWeb (let's not talk about what they did to Final Cut) - and now it looks like they've got plans for Keynote as well. It looks like the solution is either to use PowerPoint rather than Keynote, or to downgrade back to Snow Leopard. I'm tempted to change to PowerPoint just to keep in the race, but where is Apple taking us? I'm not sure that what Apple want's us to do is really good for us! But is it realistic to hang on to Snow Leopard? Are the PCs better or are they doing the same thing? It almost seems as if there were commercial agreements between those who run everything...but that's another story - or is it?
Théo

Yes, it should work with Lion. It does for lots of folks.
Are you getting an error message of some sort? If so, see #C2 in Time Machine - Troubleshooting.
If that doesn't help, try re-selecting it, via Time Machine preferences.
Or try a "full reset" of Time Machine, per #A4 in the Troubleshooting article.
Or reset the TC itself, per http://support.apple.com/kb/ht3728

VMware Fusion 2 does not work with lion

I need the VMware Fusion to run my dictonary on the Mac. I have up to now Fusion2 and this does not work with the lion.

jbjoret wrote:
VMWare and Parallels hook themselves deep with the OS and are not standard applications.
Parallels broke in the 10.6.8 update, caused a lot of headaches around here.
I don't think they follow Apple's rules too well.
Fusion might be a bit less feature rich, but it seems they are more complaint. Also Apple sells Fusion and likely uses it themselves.
Both are excellent of course.

FTP not working with Lion

Since installing Lion on my Macbook Pro ftp to and from my RiscPC has stopped working. With the latest version of Cyberduck on the Mac I can see directories on the RPC but I can't write to them. In the other direction I can't get a connection at all. It all worked fine under Snow Leopard so it's the OS that's kyboshed it, not third party applications.

boston6006 wrote:
Are you saying that FTP sites like filesanywhere are not reputable?
I am saying that any FTP sites are absolutely not reputable. Filesanywhere doesn't appear to offer FTP. They offer secure FTP, which is perfectly fine.
It's obvious that it's the receiving end that has the problem reading LION generated files.How can you explain why the problem only occurs with LION and not Leopard? This is a language problem.
No, it is your problem. There is noting about Lion that prevents any type of FTP. If you have installed some third party software that doesn't work with Lion, then don't use that software with Lion. Use something else. It isn't Apple's responsibility to fix bugs in other people's software. There are many of us who have no trouble sending files to any online service.
This thread is almost a year old. I have no idea what your issue is. I suggest updating Cyberduck. If that doesn't work, then start a new thread for your problem.

Second monitor on iMac not working with Lion

Similar Messages

Maybe you are looking for