Hi,
so to be sure to get it right. This is:
slow: BareMetal -> Ubuntu ??.?? -> Virtualbox -> Ubuntu 22.04
fast: BareMetal -> Ubuntu ??.?? -> Virtualbox -> Ubuntu before 22.04
That matches the screenshots, but not the description you gave.
So there must be something wrong here - I fail to see in your screenshots where
qemu comes into play.
Please clarify, until then my answer is based on assumptions.
---
Compiz is the compositor and will try to use GPU acceleration features.
My gut feeling tells me that either:
- the new 22.04 guests wants to use features not present in the virt environment
- some part of your stack now fails to present accelerated virtual HW
You could experiment with different GPUs configured for the guests
and/or different UI acceleration options in the guest.
---
Until we know more, incomplete
** Changed in: qemu (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1953628
Title:
Too high CPU load in qemu-system-x86 compared to Ubuntu 21.04/21.10
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