X crashing on startup

[Riccardo Mottola]

Hi,

ater the latest upgrade, I cannot start X anymore, it may be related 
to the message another user reported.

INteresting is also that the screen in virtualbox remains black and 
does not return to console.

I see this error after startx:

X.Org X Server 1.20.0
X Protocol Version 11, Revision 0
Build Operating System: GNU 0.9 i686-AT386 Debian
Current Operating System: GNU hurd-vm 0.9 GNU-Mach 
1.8+git20180218-486/Hurd-0.9 i686-AT386
Build Date: 24 May 2018  04:23:27PM
xorg-server 2:1.20.0-2 (https://www.debian.org/support)
Current version of pixman: 0.34.0
        Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Mon Jun  4 22:13:20 2018
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
/usr/lib/xorg/Xorg: symbol lookup error: 
/usr/lib/xorg/modules/input/mouse_drv.so: undefined symbol: xf86GetOS
xinit: giving up
xinit: unable to connect to X server: Connection refused
xinit: server error

I suppose there is an issue with Xorg.. any clues?

Riccardo