Hi, Benoît Dejean [2007-11-22 10:42 +0100]: > hal can no longer suspend my laptop. > gnome-power-manager no longer shows the suspend option and > > $ sudo /usr/sbin/pm-suspend > Error: kernel cannot suspend to ram.
Just a quick note: This is an issue in pm-utils. On powerpc, /sys/power/state only contains 'disk', not 'mem'. On powerpc with a PMU the prefered way of querying sleep capability and causing suspend-to-ram is to use a sysctl (see attached script from Ubuntu's powermanagement-interface). I believe that echoing 'mem' to /sys/power/state works, too, though. So this needs a quirk/fix/workaround in pm-utils. Martin -- Martin Pitt http://www.piware.de Ubuntu Developer http://www.ubuntu.com Debian Developer http://www.debian.org
#!/bin/bash
# This is the PowerPC version of PMI.
# (C) 2006 Martin Pitt <[EMAIL PROTECTED]>
command="$1"
event="$2"
usage () {
echo "Usage: $0 query|action <event>" >&2
echo " $0 capabilities" >&2
exit 254
}
query () {
[ ! -z "$1" ] && event="$1"
case "$event" in
suspend|sleep)
perl << EOF
sub PMU_IOC_CAN_SLEEP { 0x40044205; }
open PMU, '/dev/pmu' or die "open /dev/pmu: \$!";
\$p = pack 'l', 0;
ioctl PMU, &PMU_IOC_CAN_SLEEP, \$p or die "ioctl: \$!";
(\$v) = unpack 'l', \$p;
exit (\$v ? 0 : 1);
EOF
result=$?
;;
hibernate)
# no hibernation support at the moment
result=1
;;
*)
result=1
echo "No such event found" >&2
;;
esac
}
call_scripts() {
if [ -x /etc/apm/apmd_proxy ]; then
/etc/apm/apmd_proxy $1 $2
else
run-parts --arg=$1 --arg=$2 /etc/apm/event.d
if [ -d /etc/apm/$1.d ]; then
run-parts --arg=$1 --arg=$2 /etc/apm/$1.d
fi
fi
}
run () {
case "$1" in
suspend|sleep)
# call suspend scripts
call_scripts suspend user
# trigger sleep
perl <<EOF
sub PMU_IOC_SLEEP { 0x20004200; }
open PMU, "/dev/pmu" or die "open /dev/pmu: \$!";
ioctl PMU, &PMU_IOC_SLEEP, 0;
EOF
# call resume scripts
call_scripts resume suspend
;;
hibernate)
echo 'Not implemented' >&2
;;
*)
echo "No such event found" >&2
;;
esac
}
capabilities () {
for i in "hibernate" "suspend"; do
query $i
[ "$result" -eq 0 ] && caps="$caps $i"
done
echo $caps
}
case "$command" in
query)
query $event
exit $result
;;
action)
run $event
;;
capabilities)
capabilities
;;
*)
usage
;;
esac
exit 0
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