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Slow virtualbox guests after update to 5.2

Posted: 14. Nov 2017, 16:05
by reality
Hello,
I have seen similar topics here but I wanted to provide more info maybe this will be helpful in solving problems:
VirtualBox software:
VirtualBox-5.2.1-119001-Linux_amd64.run
VBoxGuestAdditions_5.2.1-118995.iso
VBoxGuestAdditions_5.1.30.iso
Oracle_VM_VirtualBox_Extension_Pack-5.2.1-118994.vbox-extpack

VirtualBox Host: Slacware current 64bit
RAM 32GB
Video Haswell hybrid: nouveau
disk: SSD 1.5TB
kernel 4.13.12 or 4.14

virtual box clients are slow:

Problem I see while GUI is fast,
in console window cursor lags visibly (several miliseconds up to 1s possibly)
this is not related to VBoxGuestAdditions. Changing VirtualBox-5.2.1-119001-Linux_amd64.run to
VirtualBox-5.1.30-118389-Linux_amd64.run fixes problem (obviously I have to tun kernel 4.13.12 or less after downgrading virtualbox)

Re: Slow virtualbox guests after update to 5.2

Posted: 21. Nov 2017, 01:04
by reality
the problem persists with
VirtualBox-5.2.1-119176-Linux_amd64.run
and
Oracle_VM_VirtualBox_Extension_Pack-5.2.1-119176.vbox-extpack

all VirtualBox Guests are affected with exception of Funtoo running VirtualBoxGuest Additions 5.1.28

switching to VirtualBox-5.1.31-119103-Linux_amd64.run and Oracle_VM_VirtualBox_Extension_Pack-5.1.31-119103.vbox-extpack fixes the issue without downgrading VirtualBox Guest Additions.
This is why I believe that the problem is with VirtualBox-5.2.1 for host.

I don't see anything in log file from one of affected VBox guests.

I would appreciate some insights if possible.

Thank you