VirtualBox Slows Down in Fullscreen Mode on MacBook Pro 2019

Discussions related to using VirtualBox on Mac OS X hosts.
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danielfelton
Posts: 1
Joined: 18. Nov 2023, 11:43

VirtualBox Slows Down in Fullscreen Mode on MacBook Pro 2019

Post by danielfelton »

I've recently installed Ubuntu on VirtualBox 7.0.1.2 where I'm experiencing a lot of sluggish performance paired with extremely high-resolution image output on full-screen. Toning down the resolution from within Ubuntu doesn’t seem to fix the issue. Instead, it readjusts to the default resolution when you enter fullscreen again.

For a bit of a reference, the same virtual machine runs perfectly fine on my decade-old Windows laptop.
mpack
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Posts: 39134
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: VirtualBox Slows Down in Fullscreen Mode on MacBook Pro 2019

Post by mpack »

Please provide a VM log file. Make sure the VM is fully shut down, then right click it in the manager UI. Select "Show Log" and save "VBox.log" (no other file) to a zip file. Attach the zip here.
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