VM guest keep crashing silently

[ilovemyvmsverymuch]

hello virtualbox community,
I encounter annoying problems with my virtualbox VMs which keep crashing ever and ever when:
- I copy-paste host to guest ;
- I open a now tab in firefox
- I browse my file system with the file system manager
these events do not systematically crash the guest, but regularly do.
I tried at first with a CentOS-8 VM, and it crashed very regularly (can not use my VM more than 10 minutes without crashing).
I tried then with Linux Mint, but while not so regularly, it keeps crashing.
I do not know what to do apart from thowing away virtualbox...
any help will be much appreciated!

please find below and enclosed the Virtualbox log files and other details regarding my configuration.

Host:
CentOS 7 (7.7.1908)
Linux antoine.domain 3.10.0-1062.9.1.el7.x86_64 #1 SMP Fri Dec 6 15:49:49 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
VirtualBox version: 6.1.0 r135406 (Qt5.6.1)
RAM: 16Gb
Extpack for 6.1.0 installed

Guest:
Linux linuxmint 5.0.0-32-generic #34~18.04.2-Ubuntu SMP Thu Oct 10 10:36:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
With vbox additions: 6.1.0 r135406
With Gnu Make 4.1
Please find enclosed the results of VBoxManage showvminfo for this VM

[mpack]

I would first try increasing graphics RAM to something more useful, e.g. 256MB.

[ilovemyvmsverymuch]

I would first try increasing graphics RAM to something more useful, e.g. 256MB.

Thank you for the hint. I tried to increase the associated graphic RAM up to 128MB (the maximum settings available through my Virtualbox interface), however, I did not see any significant improvement.

[doleron]

do you remeber if you have any webcam attached to the VM during those crashes?

I have a similar issue. I replied here but it was moved to another forum area: viewtopic.php?f=7&t=96280&p=491021

[scottgus1]

doleron, there is no mention of the webcam being used by ilovemyvmsverymuch in the posted log that I can see, aside from the normal couple of mentions in the configuration section because the Extension Pack was being loaded.

ilovemyvmsverymuch's VM had 3D acceleration enabled and only 32MB video RAM, which is tiny for 3D acceleration. Also it was running under 6.1.0, by default the buggiest version of the new 6.1.x release.