I have a Windows 7 host (Corei7, 8GB RAM, dual monitors) and guest (2 CPU, 2GB RAM, 256 MB video RAM). The guest is configured for dual monitor support. I have installed VB 4.1.0 and the 4.1.0 Guest Additions with the WDDM video driver. When I enable 3D acceleration and dual monitors for the guest, the guest is very slow to respond and if I resize one of the virtual monitors, both virtual monitors display black. Eventually the Windows desktop is displayed, but then the mouse does not work. If I disable 3D acceleration in the guest and enable dual monitors, the guest works fine. Also if I return to a single monitor and enable 3D acceleration all appears to be fine.
Guest monitor resolutions are 1920 x 976 and 1920 x 1016.
I looks like the guest needs more video RAM, is their anyway to give the guest more video RAM so that it will run Aero in dual monitor mode?
Multiple Monitors and Aero in Win7
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BillG
- Volunteer
- Posts: 5106
- Joined: 19. Sep 2009, 04:44
- Primary OS: MS Windows 10
- VBox Version: VirtualBox+Oracle ExtPack
- Guest OSses: Windows 10,7 and earlier
- Location: Sydney, Australia
Re: Multiple Monitors and Aero in Win7
I am not surprised. This is the first (experimental) release of the WDDM driver. I would not expect it to handle that sort of setup yet.
Bill