I am currently running ML 10.8.3 in a machine with the following specs:
- Gigabyte gtx 670
- Gigabyte z77x-udh5
- core i5 3570k
For the past half year I have used a single monitor setup using a VGA (only) monitor connected to the DVI-I connector of the gtx 670.
Recently I bought a second monitor and my intention is to connect both to the graphic card. Hence, I connected the new monitor to the HDMI connector of the graphic card.
The problem is that when I boot into OSX with both monitors connected the VGA->DVI-I one goes to sleep (after the apple logo) while the HDMI returns a blank/gray screen, my impression is that OSX freezes completely.
When I boot with only one of the monitors connected, everything goes well.
If i boot with only one monitor connected and connect the second one after the boot the OSX will freeze and force me into a hard-reboot.
Moreover, when I boot into Windows 7 everything works fine, so I suspect is possible to use VGA+HDMI.
I have google it and some people ( that had the some problem with the gtx 560) suggest adding
to the chameleon plist, it didn't work for me.
Do you guys have any suggestions ?