Was being split over a newline.
EOF
DEBUG_XORG_PACKAGE=1 DEBUG_XORG_DEBCONF=1 live-reconfigure /root xserver-xorg 2>&1 \
EOF
DEBUG_XORG_PACKAGE=1 DEBUG_XORG_DEBCONF=1 live-reconfigure /root xserver-xorg 2>&1 \
- | grep -v "overwriting possibly-customised configuration file"
+ | grep -v "overwriting possibly-customised configuration" \
+ | grep -v "file; backup in /etc/X11/xorg.conf"
umount /root/sys
umount /root/proc
umount /root/dev
umount /root/sys
umount /root/proc
umount /root/dev