Fedora 28 on Virtualbox 5.2 very slow

[weberjn]

I run Fedora 28 on Virtualbox 5.2 on Windows 10 on Thinkpad T460s. Guest additions installed. 3D enabled. 2 CPUs, PAE on. 4G.

Text mode is fine.

6 seconds for
systemctl isolate graphical.target

75 seconds from login to desktop ready seems very long.

Any idea what's wrong?

[socratis]

Any idea what's wrong?

Nope, no clue. Not until we see a complete VBox.log, from a complete VM run:

• Gather the necessary information:
  1. Start the VM from cold-boot (not from a paused or saved state).
  2. Observe the error/wrong behavior.
  3. Shutdown the VM (force close it if you have to).
• With the VM completely shut down (not paused or saved), right-click on the VM in the VirtualBox Manager and select "Show Log".
• Save only the first "VBox.log", ZIP it and attach it to your response. See the "Upload attachment" tab below the reply form.

[weberjn]

OK, these are logs of two sessions that were unusably slow. This time on an i7 desktop.

[weberjn]

Tried Ubuntu 18. Same. Tried 3D Acceleration off, problem gone. Haven't tried Fedora.

[socratis]

00:00:02.701652 VRamSize <integer> = 0x0000000001000000 (16 777 216, 16 MB)

Your VRAM is too low. Take it to 64 or 128 MB.