SOLVED.
Starting from your suggestion, having I a rtl8723be based wifi card, I made a
simple test:
$ sudo su
# service network-manager stop
# modprobe -r rtl8723be
# modprobe -r rtl8723_common rtl_pci
# modprobe -r rtlwifi
# killall -9 wpa_supplicant
then shutdown: the system halted perfectly. I retryed several time, and
always worked.
So, simply, I made a script in /usr/local/sbin/wireless-stop.sh:
#!/bin/bash
service network-manager stop
modprobe -r rtl8723be
modprobe -r rtl8723_common rtl_pci
modprobe -r rtlwifi
killall -9 wpa_supplicant
then an entry in /etc/init.d/wireless:
#!/bin/sh
### BEGIN INIT INFO
# Provides: wireless
# Required-Start:
# Required-Stop:
# Default-Start:
# Default-Stop: 0 6
# Short-Description: unload wifi modules
### END INIT INFO
PATH=/sbin:/bin:/usr/sbin:/usr/bin
case "$1" in
start)
# do nothing at start
;;
stop)
log_daemon_msg "Removing wifi modules from kernel"
/usr/local/sbin/wireless-stop.sh
;;
restart|force-reload)
# do nothing at restart and reload
;;
status)
# no mean to ask for a status.
;;
*)
echo "Usage: /etc/init.d/wireless stop"
exit 1
;;
esac
then, just symlink in /etc/rc0.d (shutdown) and /etc/rc6.d (restart):
# cd /etc/rc0.d && ln -s /etc/init.d/wireless K00wireless
# cd /etc/rc6.d && ln -s /etc/init.d/wireless K00wireless
et voilà. Shutdown and restart now works.
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https://bugs.launchpad.net/bugs/1724317
Title:
Shutdown hangs / no standby - possible Wifi-bug in the kernel
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