Ubuntu 18.04 installation screen size problem

[coubi64]

Hi.

I use Windows 10 Pro 64 as Operating System. It's my Host.

I installed VirtualBox 5.2.10.

I have a Ryzen 1700X as processor, an Asus Prime B350-plus as motherboard and a RX480 as Graphic card.

I try installing latest LTS Xubuntu 64 bits (18.04) in VirtualBox but I can't change screen resolution so I can't see the install window entirely.

Whatever I tried i didn't manage to change screen resolution.

Is is a bug or is there something i can try to solve this problem?

Thanks in advance for your help.

[andyp73]

Have you installed the Guest Additions for the Xubuntu guest? You need to "insert" the Guest Additions into the virtual drive using the "Devices" menu for the guest and then as root run the installer. It will require compilation tools and the kernel headers to work though.

It would be beneficial to see the VBox.log file from the guest in question. Boot the guest, make sure the problem occurs then shut the guest down (by force if necessary). zip the log file and post it.

-Andy.

[coubi64]

It happens before Ubuntu is installed. So i can't install guest additions. I boot the iso and then choose "install Xubuntu".

The only log i found is "VBoxSVC.log". I attached it.

[socratis]

It happens before Ubuntu is installed.

Are you talking about changing the resolution before the installation? You can't do that. You need to install an OS before installing the GAs. No OS? No GAs, no different resolution.

As for the log, that's not the log we're looking for. With the VM shutdown (after the failure), right-click on the VM in VirtualBox Manager, "Show log". The "VBox.log" (ONLY) is the one we're looking for. ZIPPED! But it's not needed now, since there's nothing failing. Everything is as it should be.

[hevercosta]

1) Turn off the virtual machine;
2) Just change from "VboxVGA" to "VboxSVGA" in Screen Tab ( https://www.virtualbox.org/manual/ch03. ... ngs-screen );
3) Turn on the virtual machine and run setup again.