I am running Kubuntu Hardy Heron, with a dual monitor setup, and have VirtualBox on it running Windows XP in seamless mode.
My problem is, I can't get VirtualBox to extend to the second monitor. How can this be achieved?
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VirtualBox 3.2.1 supports multiple guest monitors. The documentation was not clear on how to enable this.
The VirtualBox “View” menu will have an entry for each “Virtual Screen”. All but the first can also be enabled/disabled from here. This seems to only work after step 5.
VBoxManage modifyvm "vm name" --monitorcount X
VBoxManage modifyvm "VM name" --vrdpmulticon on
rdesktop -d \@1 ip-address-of-hostand connect to monitor 2 with
rdesktop -d \@2 ip-address-of-host. This is explained in lomaxx's answer. (You might be able to use
\@, depending on your shell.)
Start your guest and perform the standard "Extend the desktop onto this display" method based on the Guest OS. (Guest Additions need to be installed.)
This one confused me. I looked all over the Guest Additions and couldn't find it. In the hopes that it might help someone else, it is talking about the Control Panel in Windows itself. In the Control Panel click on Display -> Setting and there you will see the "Extend the desktop onto this display".
I am running Debian Sid and i was able to get windows 7 and xp to run in seamless in dual monitor mode, with 3D acceleration, you need to install your guest additions in safe mode.
the steps i took were:
install os with dual screens enabled already, if your o/s is already installed i am unsure if you will get support, though i would recommend following the below to do so.
after install hit F8 while booting up windows
select run in safemode with networking (networking isnt really needed, but thats the step i took)
then install guest additions 32bit (dual screens works in 64 but 3D does not) reboot and you should have dual screens available with 3D support on One monitor (:1)
i couldn't get it to work on both. I did Not have vrdp enabled to do this and it worked just fine.
AFAIK you can use multiple monitors only in the following instances:
Multiple monitors currently work only with Windows XP guests, and Guest Additions must be installed, as the implementation resides in the Guest Additions video driver.
Multiple monitors work only with the VBoxHeadless frontend. You must also enable VRDP multiconnection mode (see chapter 7.4.6, VRDP multiple connections, page 94) to access two or more VM displays when the guest is using multiple monitors.
As long as you have guest editions installed, all I had to do was go to
Settings -> Display -> Monitor count -> Change to two (This is with the machine powered off running Windows 10). Then, once I had started the machine I went to View -> Virtual Screen 2 -> Enable
Not sure if this will work for you.