Virtualbox fatal error while using DisplayLink

[navid_gh]

Hi,

I hope you are well in this unprecedented situation and thank you for all your hard works in this crisis.

I recently started using Wavlink Universal USB 3.0 and install the driver from ​https://www.displaylink.com/downloads/ubuntu

Whenever I plug it to the laptop and run the Virtualbox with a normal user, it shows the error below:

Gdk-Message: 16:26:10.843: VirtualBox: Fatal IO error 0 (Success) on X server :0

and when I run it with root access:

Qt WARNING: QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
Qt WARNING: The X11 connection broke: Maximum allowed requested length exceeded (code 4)
XIO:  fatal IO error 2 (No such file or directory) on X server ":0"
      after 681 requests (681 known processed) with 0 events remaining.

But when I disconnect the DisplayLink, it shows the UI and it works.

Here are the details of ubuntu:

No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 18.04.4 LTS
Release:	18.04
Codename:	bionic
Linux 5.3.0-46-generic #38~18.04.1-Ubuntu SMP x86_64 x86_64 x86_64 GNU/Linux