You should contact Matrox for support regarding their software.
Did you try finding a solution or reading the user guide?
Are you shure you have the latest drivers and software installed?
Sometimes, the drivers that are packged with hardware are not the latest ones.
Few things you can check:
1- Is the USB cable connected directly to your iMac? Do not connect it to a hub
2- You say you have the latest software, look here to make sure you also have the latest Firmware update for Lion.
What version of iMac do you have?
Are you connecting with Thunderbolt/Mini display port, or with mini DVI?
Are you sure the Mini display port to display port, or Mini DVI to DVI adapter you have is working well?
There was an installer for the software. I downloaded the latest version for mac OS from the matrox website. I installed it, restarted my computer and that is when I attempted to open the software and nothing happens. I could not find anything in their user manual that assisted me.
Can you provide the download link if that software is publicly available?
21.5" Mid 2011 iMac. I have a projector connected to the thunderbolt using a vga adapter and it is working fine. . I am trying to add a third display and I would like to split it to cover 2 55" LCD TV's for stage monitors. I am using a Display Link USB to DVI adapter then connecting it to the Matrox DualHead2Go to split it to the TV's.
Try this. It doesn't have a specific page just for the download. I picked DualHead2Go Digital Edition, then Mac OS 10.7 Lion, then cliced on 1.03.02.004. That took me to the page to the Download info page, then after I clicked on the box beside
I have read and agree to the Matrox Specific Notice above.
Then it gave me a link that when I clicked on it, it started the download.
Ok, got it. Needed to download the Snow Leopard version since I use Snow Leopard.
Interesting that there is no driver required for that stuff. Their installer should have created a login item in your Accounts system preferences for "Matrox PowerDesk" which was installed in your /Applciations.
I've been confused myself by apps like this too and when I tried to execute it, like you, I saw nothing happen. But I've tripped over apps like this enough times to know to look in my menu bar. Yup, it's a menu item! So look for something like the following in the right end of your menu bar.
When you click on it you should see:
I have finally been able to contact Matrox and they are saying that the DualHead2Go Digital Edition is not compatable with the newer iMac, MacBook Pro's etc., that have the Thunderbolt. There has to be a way to get the iMac to recognize the Matrox using a newertechnology USB to DVI/HDMI/VGA Display Adapter. I was finally able to launch the Matrox PowerDesk, but as soon as I plug in the DualHead2Go and the Display Adapter, it stops responding. The DualHead2Go only displays on 1 of the monitors attached. If anyone has any suggestions, I am open to trying them. Thanks.