Full screen Windows 10 on Ubuntu host not working

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RobSix
Posts: 2
Joined: 21. May 2021, 16:56

Full screen Windows 10 on Ubuntu host not working

Post by RobSix »

Full screen mode is not working as expected - there is a large black border around the guest screen. This was working however I did an apt update/upgrade recently and this seems to have broken something and I'm not sure what's wrong

VirtualBox guest additions has been re-installed and auto-resize guest display is checked. I have also attached the vbox.log

VirtualBox Version 6.1.22 r144080
Host OS: Ubuntu 20.04.2
Kernel: 5.8.0-44-generic

Guest OS: Windows 10.0.19042
Attachments
vbox_windows_log.zip
vbox.log
(26.55 KiB) Downloaded 7 times
scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: Full screen Windows 10 on Ubuntu host not working

Post by scottgus1 »

The VM got suspended and resumed then reset, and was still running when the log was taken. So a full diagnosis may not be possible. But it didn't seem to have any trouble running. Guest Additions seem to load OK, and 3D acceleration seems to be working.

3D acceleration depends on host drivers. Could these have broken?

Try another run of the VM from full power off, no extra suspends or resets. Get the VM logged in, change it to full-screen, then change it back to window mode. Then shut down the OS. Then zip and post the new vbox.log.
RobSix
Posts: 2
Joined: 21. May 2021, 16:56

Re: Full screen Windows 10 on Ubuntu host not working

Post by RobSix »

Thanks. I tried disabling 3D acceleration and that seems to have worked so I think you were right about the host drivers breaking
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