Host system is Windows 10 pro, Virtual Box 6.1.4, installed Ubuntu mate beta 20.04 as a guest OS.
2nd monitor fails.
uname -r
5.4.0-21-generic
desktop info
I've tried with 3D Acceleration also as well as without.
Thoughts?
Thanks
poweroff the vm
in Virtualbox > Settings > Display > Monitor count > 2
start VM then View -> Virtual Screen 2 -> Enable
does this help?
start VM then View -> Virtual Screen 2 -> Enable (fails) enable is greyed out.
before this step, did you configure the guest to extend the desktop to a second monitor?
(I assume you have guest additions installed)
btw, the image you attached is small, not clickable so I cannot see a thing.
Sorry about the image size. Yes I did install the guest additions.
Is your virtualbox Graphics Controller VBoxVGA ?
and extend the video memory to 128M
It's working here on a Manjaro host:
- VMSVGA (recommended for Linux guests)
- 128 MB video memory
- 2 monitor count
- 3D acceleration disabled
The second monitor was avaliable as soon as it logged on to the desktop. In this VM I never attempted to install from Ubuntu's Additional Drivers and used it straight off from the Guest Additions CD.
I have found Guest Additions 6.1.4 to be buggy on 20.04 at the moment - shared clipboard doesn't seem to work!
Just to note, VirtualBox 6.1.6 has been released and addresses this area:
Graphics: Fixed monitor resizing and multi-monitor handling bugs on X11 guests with VMSVGA graphics adapter