I used 'ubuntu 17.04' system in VirtualBox.And After i ticked the 3D acceleration
up.
There are some gnome-shell
's prettification became disable.
And the Gnome Tweak Tool
lost the option of shell theme
.
So I tryed to start the gnome-shell
.But I get the error return that:
Window manager error: Failed to get proc address for 'eglGetPlatformDisplayEXT'
And When i canceled the 3D acceleration
down.
I can't enter the system's lock screen.
It show full black all over the screen and didn't return any message.
My VirtualBox is 5.1.28
.And host system is win10.
apt-get remove --purge virtualbox-ose-guest-dkms virtualbox-ose-guest-utils virtualbox-ose-guest-x11 && apt-get autoremove && apt-get autoclean