Fixed! Solution found here.
Step 1: Create a file at /etc/pm/sleep.d/20_custom-ehci_hcd, with the following code:
Code:
#!/bin/sh
#inspired by http://art.ubuntuforums.org/showpost.php?p=9744970&postcount=19
#...and http://thecodecentral.com/2011/01/18/fix-ubuntu-10-10-suspendhibernate-not-working-bug
# tidied by tqzzaa :)
VERSION=1.1
DEV_LIST=/tmp/usb-dev-list
DRIVERS_DIR=/sys/bus/pci/drivers
DRIVERS="ehci xhci" # ehci_hcd, xhci_hcd
HEX="[[:xdigit:]]"
MAX_BIND_ATTEMPTS=2
BIND_WAIT=0.1
unbindDev() {
echo -n > $DEV_LIST 2>/dev/null
for driver in $DRIVERS; do
DDIR=$DRIVERS_DIR/${driver}_hcd
for dev in `ls $DDIR 2>/dev/null | egrep "^$HEX+:$HEX+:$HEX"`; do
echo -n "$dev" > $DDIR/unbind
echo "$driver $dev" >> $DEV_LIST
done
done
}
bindDev() {
if [ -s $DEV_LIST ]; then
while read driver dev; do
DDIR=$DRIVERS_DIR/${driver}_hcd
while [ $((MAX_BIND_ATTEMPTS)) -gt 0 ]; do
echo -n "$dev" > $DDIR/bind
if [ ! -L "$DDIR/$dev" ]; then
sleep $BIND_WAIT
else
break
fi
MAX_BIND_ATTEMPTS=$((MAX_BIND_ATTEMPTS-1))
done
done < $DEV_LIST
fi
rm $DEV_LIST 2>/dev/null
}
case "$1" in
hibernate|suspend) unbindDev;;
resume|thaw) bindDev;;
esac
Step 2: Make this file executable with this command:
Code:
sudo chmod 755 /etc/pm/sleep.d/20_custom-ehci_hcd
Step 3: Enjoy. The screen still flickers, but the laptop goes into proper sleep.
You'll also need to do the keyboard/touchpad fix provided at the same site. That seems to also fix the automatic reboot on power off bug. Otherwise, you'll run into the problem of the computer restarting after you put it to sleep and the keyboard not working so that you can't put enter your password and the only solution is to reboot and lose your session.
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