1

I recently bought a maxed out iMac 5k (2019). I thought I would have some fun and start my software development project using Ubuntu via VirtualBox.

Here is a screenshot of my VirtualBox configuration:

Virtualbox Configuration

So pretty much I made this post to mention... that when I maximize the window and set the scaling factor to 200%, the performance is horrible. Is this to be expected?

When I type the text significantly lags behind and there are often multiple repeated keystrokes (for example, I'll get hhhhheeeelllllooooooo) if I tried to type "hello."

When I set the resolution to something much lower within Ubuntu such as 2560 x 1600, the performance is awesome, but now my window is tiny relative to the actual screen of my iMac.

Am I missing some key configuration or were my expectations of running Linux in a virtual environment with high performance too high?

Thanks!

2
  • Set your CPU and memory specs down... 2 CPU's and 2048 memory. See if that improves things. If it does, I'll write a formal answer that you can accept. Report back. Start comments to me with @heynnema or I'll miss them. – heynnema Sep 4 '19 at 23:52
  • And assuming that you've properly installed Guest Additions, you can eject the GA CD image. – heynnema Sep 4 '19 at 23:57
0

After scouring the internet, I found this link: https://forums.virtualbox.org/viewtopic.php?f=8&t=90446&start=60

Pretty much Virtualbox does not play nice with iMac's hiDPI resolutions.

Per the link above, I installed this piece of software: https://github.com/avibrazil/RDM

And set my resolution to a non hiDPI resolution. Now the performance of my Ubuntu VM runs great!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.