virtualbox.org

Host: Windows 8.1 64 bit Professional
Guest: Ubuntu 64-bit.
VBox version: 4.3.20
Problem: Going mad.

More specifically, I have set the VM to have two displays, I have increased the Videoram to its maximum. When I go into the Linux guest, I see two displays. However, both are called "VBOX" and they seem to be treated as a single monitor. I can't turn off mirroring with them for example. I have no idea why. I can disable one or the other of them and the Virtualbox window representing that display will close. I have not had this problem before with a Linux guest, it's a new problem. Clearly in some way it's detecting that there are two displays as both are listed, but beyond that it's stuck. Searching for help on this under Linux has been fruitless. I think something fundamental may be wrong because it can't detect my sound card either and that's never been a problem before, either.

Please - can anyone help with this? I need to work and this is driving me crazy.

Moved to "Linux Guests", since "Windows Hosts" is not the place to find Linux experts.

mpack wrote:Moved to "Linux Guests", since "Windows Hosts" is not the place to find Linux experts.

Sorry. Because both displays are reporting to Linux as the same display (as far as I can tell) it seemed to be a host issue. But I'm not sure how to tell. I haven't been able to resolve this anyway. Does anyone know where to start with this?

Since nobody else is reporting this issue, I assume that the virtual hardware is ok (otherwise all guests would be affected) and you therefore have a problem with this guest configuration. Beyond that - I'm not a Linux expert, so someone else will have to offer advice on a fix.