Mac OSX 10.8.2 Host / Windows 7 x64 Guest Dual Monitor Crash

[mnichols]

Host OS: MBP with Retina Mountain Lion. Host Graphics: NVIDIA GeForce GT 650M VB Versions tried : 4.2.4 _and_ 4.2.6 Guest OS: Win7x64 Professional SP1, fully updated

Monitors: Dell 2408 , Dell 2407 Config:

• I _have_ installed Guest Additions.
• I disabled 3D and 2D
• Remote Desktop Server is disabled
• Max video memory (128MB)
• Guest RAM is 4GB
• SATA Controller for Guest OS
• Acceleration: VT-x/AMD-V, Nested Paging

I have successfully run dual monitor on this system with my Debian 6 guest. Running the guest in single monitor works fine and I can go into Full Screen mode.

Problem:

When I try to have dual monitor, the second window ({guestName} Running: 2) doesn't appear. If I try to go into to 'FullScreen Mode' in the one window that _does_ appear, the guest crashes and is reported as 'Aborted'. The weird thing is, there is not a log entry pertaining to the crash that I can see. There _is_ a crash report in the OS logs though.

I tried opening my Mac to see if the problem persisted but nothing is different.

I tried to 'extend desktop to ' the second monitor inside the Guest OS, but the VM Crashes when I do that, too!

I'm at a loss here and I can't see anything in the logs that help out. I am new to running VB on Mac, so perhaps there is something I should do?

I am attaching my VBox and my Mac .crash files which may help.

[mnichols]

VBox log primary

[mnichols]

VBox 1

[mnichols]

VBox 2

[mnichols]

Crash log from Mac

[mnichols]

I just tested Win Server 2008 and Windows 8 as guests inside this same host. Dual monitor works okay for these OSs.

[squatch]

Looks the same as #11283.

[Frank Mehnert]

Please reopen if still relevant with VBox 4.2.10.