Comment 11 for bug 1873922

I am facing the same bug.

VirtualBox Graphical User Interface
Version 6.1.34 r150636 (Qt5.6.2)
Copyright © 2022 Oracle Corporation and/or its affiliates. All rights reserved
with
Ubuntu 20.04.2.0 LTS
on
Windows 10 Pro, Version 10.0.18362 Build 18362 successfully updated to Version: 10.0.19044 Build 19044 since my original posting.

I reloaded the VirtualBox Guest Additions which came as an ISO file with Version 6.1.34. I did download the same version from another mirror, but I have not installed that separately.

Should we consider updating Ubuntu beyond this supposedly stable version of Ubuntu 20.04? Assuming that a prior version of VirtualBox worked with Ubuntu 20.04, the bug is most likely on the VirtualBox side. I just hate the idea of a rollback at this point. I should have created a restore point before updating VirtualBox, so I could rollback. Shutting down VirtualBox and restarting it did not fix the problem for me either.

If I go to VirtualBox with the display setting VMSVGA, I just get a black screen on my DELL Latitude E6420. VBoxVGA is my typical mode, but it keeps popping up the event error. I can change the display setting in the VBoxVGA more. I think I have had unstable results with VBoxSVGA mode, but I might try that again. Maybe, I need to up the display memory to 128MB for that to work; I have display memory set to 96MB right now.

Updated Information Follows:

My Host System
Host OS Name: Microsoft Windows 10 Pro
Version: 10.0.19044 Build 19044
System Manufacturer: Dell Inc.
System Model: Latitude E6420
System Type: x64-based PC
Processor: Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz, 2801 Mhz, 2 Core(s), 4 Logical Processor(s)
BIOS Version/Date: Dell Inc. A24, 5/12/2017
SMBIOS Version: 2.6
Installed Physical Memory (RAM): 16.0 GB

I uninstalled VirtualBox 6.1.34. I moved to install VirtualBox 6.1.32 and still experienced problems. I repeated the procedure moving back to VirtualBox 6.1.30 and my problems all went away. With this version, I am again able to use a Bridged Adapter while tethering my phone to the internet without the Ubuntu screen locking up or freezing. The event failure pop-up notification messages stopped. I am also using an Android Emulator called Genymotion with VirtualBox 6.1.30 and it works great.