virtualbox.org

On linux guest with guest additions installed, screen is not in full screen mode, on windows guest all ok

Is this a new VM or an old one?
Did you install/update the Guest Additions (GAs) in your guest?
Is this with the VMSVGA graphics controller, or the VBoxVGA controller? Try switching to VBoxVGA.

Ok, with a VboxVGA adapter screen is full...

Right, that's the old stuff, that should just work. The problem is that the new one, the VMSVGA one doesn't work. Yet. So, thank you for marking it as [Solved], but I think I'm going to remove it from the thread title, because it actually should work with the VMSVGA controller...

Ok, the linux guest is used to test ubuntu in development (actually future disco dingo 19.04) with proposed activated and kernel 4.19 (at the moment), i'm tried to starting VM with VMSVGA and fullscreen works ok and using Virtualbox 6.0 NOT RC

trekfan1 wrote:using Virtualbox 6.0 NOT RC

Version 6.0.0 r127566 (Qt5.6.3)?
You should always state your complete version, it saves my clarification question and your clarification reply, i.e. time...

Yes, Virtualbox 6.0.0 r127566 (Qt5.6.3), the latest stable released

Great, thanks for the reply. Marking as [Fixed].

With new Kernel 5.0.0 VMSVGA is working at full screen (Virtualbox 6.0.4)

6.0.0 (and more) is now officially out, there's no point in discussing it any further in the beta section. It's long since it has been put to sleep.