Continuous blocking of linux virtual machines (again)

[boxino]

For a few days the virutal machines linux block inexorably after a few minutes of use.
I'm not sure but it often crashes after opening facebook when I have other heavy sites (such as Telegram or similar).
Does it depend on scripts saturating memory or processors?
I use virtualbox 7.0.8 on Ubuntu Mate 20.04.2 LTS

Thank you.

[mpack]

It looks to me like you have been moving VMs between hosts while the VM is in a saved state, and the host doesn't even present the same environment, e.g. notice the shared folder errors:

00:00:01.289948 SharedFolders host service: Adding host mapping
00:00:01.289956 Host path '/media/jupir/WD-EIDE-DATI-FOTO/Foto Digitali 2023/5 - maggio', map name '5_-_maggio', writable, automount=true, automntpnt=, create_symlinks=false, missing=true
00:00:01.290007 ERROR [COM]: aRC=NS_ERROR_INVALID_ARG (0x80070057) aIID={6ac83d89-6ee7-4e33-8ae6-b257b2e81be8} aComponent={ConsoleWrap} aText={Shared folder path '/media/jupir/WD-EIDE-DATI-FOTO/Foto Digitali 2023/5 - maggio' does not exist on the host}, preserve=false aResultDetail=0
00:00:01.290049 Console: VM runtime error: fatal=false, errorID=BrokenSharedFolder message="The shared folder '5_-_maggio' could not be set up: Shared folder path '/media/jupir/WD-EIDE-DATI-FOTO/Foto Digitali 2023/5 - maggio' does not exist on the host.
00:00:01.290050 The shared folder setup will not be complete. It is recommended to power down the virtual machine and fix the shared folder settings while the machine is not running"
00:00:01.290365 SharedFolders host service: Adding host mapping
00:00:01.290369 Host path '/home/jupir/PDF', map name 'PDF', writable, automount=true, automntpnt=, create_symlinks=false, missing=false

None of this will be improving the stability of the VM experience.

[scottgus1]

As Mpack pointed out, the log was from a save-stated VM. This causes some diagnostic info to be missing from the log.

To get a log with full diagnostic info you'll have to stop using saved state and fully shut down the VM each time. Then, after the problem occurs, shut down the VM completely and post the log.

There is a hint that Guest Additions 7.0.8 is being used in the VM. 7.0 is still in bug-hunt phase, and graphics had a code change. Please try the 7.0 test builds Guest additions in the VM.

[boxino]

I did numerous further tests but it seems that the problem lies in the 3d acceleration of the video card. Once you disable the continuous blocks seem to disappear.

[scottgus1]

Interesting! That fits with a possible graphics bug in 7.0's new graphics system.

Please note the post above yours about getting a from-full-shutdown log and the test build (also try development snapshots) GAs.

[boxino]

Excuse me, but what should I do? Is the log incorrect?

[scottgus1]

Is the log incorrect?

the log was from a save-stated VM. This causes some diagnostic info to be missing from the log.

I'll leave you to deduce what that means and what to do next.

[boxino]

Log, i hope is correct.
Bye!

[scottgus1]

Thanks for the log. The VM has 3D Acceleration enabled and 7.0.8 Guest Additions. Please try the 7.0 test builds or development snapshots Guest additions. There may be fixes for this.

BTW turning off 3D disables the new graphics code, which may be why the problems stop when 3D is disabled.

[boxino]

I installed version 7.0.9 but the problem is the same. I also updated the guest additions. Without acceleration it works. I attach the log.
See you.

[scottgus1]

Thanks for the attempts. Turning off 3D stops the problem, probably means it's the new graphics code. This might be a good ticket for the Bugtracker. Please post the various logs and a link back here. Maybe the devs can make something of it.

[fth0]

FWIW, the VBox.log files do not indicate any issues to me. The guest OS is up and running after ~18 seconds, including the VirtualBox Guest Additions, and being shut down at ~1 minute runtime.

[boxino]

In this log the machine freezes at runtime in the sense that the operating system exits the GUI and exits on a console in which an infinite series of messages are printed. In other cases it just freezes.

[fth0]

an infinite series of messages

What are those messages about?

[boxino]

As soon as possible I try to take a screenshot.