jegnux@jegnux-desktop:~$ grep "(EE)" /var/log/Xorg.0.log
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(EE) xf86OpenSerial: Cannot open device /dev/wacom
(EE) xf86OpenSerial: Cannot open device /dev/wacom
(EE) xf86OpenSerial: Cannot open device /dev/wacom
(EE) xf86OpenSerial: Cannot open device /dev/wacom
(EE) xf86OpenSerial: Cannot open device /dev/wacom
(EE) xf86OpenSerial: Cannot open device /dev/wacom
jegnux@jegnux-desktop:~$