/usr/share/tcos/hooks-addons/53mga is in initramfs-tools-tcos 0.89.93ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | # hook addon for thin clients with chip Matrox MGA*
cat << EOF > ${DESTDIR}/scripts/tcos-bottom/15mga
#!/bin/sh
#
if [ "\$1" = "prereqs" ]; then
exit 0
fi
quiet=n
. /scripts/functions
. /conf/tcos.conf
. /conf/tcos-run-functions
#ids="2064w 1064sg 2164w g100 g200 g400 g550"
test1=\$(get_vga_vendor "102B")
if [ "\$test1" != "1" ]; then
# not in client with chip Matrox mga
exit 0
else
if [ -f /usr/lib/xorg/modules/drivers/mga_drv.so ]; then
log_begin_msg "Loading support Matrox MGA driver"
configurexorg --newsettings --xdriver=mga --outputfile=/etc/X11/xorg.conf 2>> /tmp/initramfs.debug
log_end_msg \$?
fi
fi
EOF
chmod +x ${DESTDIR}/scripts/tcos-bottom/15mga
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