March 31, 2012 — 17:50

Author: silver  Category: hardware linux  Comments: Off

2015

https://01.org/blogs/rzhang/2015/best-practice-debug-linux-suspend/hibernate-issues

Test:

echo disk > /sys/power/state

grep PM: /var/log/dmesg

Disk Encryption and hibernate

Verify resume device:

/etc/default/grub:
GRUB_CMDLINE_LINUX="resume=/dev/mapper/cryptswap1”

update-grub

/etc/initramfs-tools/conf.d/resume:
RESUME=/dev/mapper/cryptswap1

sudo update-initramfs -u -k all

If it’s still not working try testing without encrypted swap (/dev/disk/by-label/swap).

2012

Hibernate under Ubuntu often doesn’t work or stops working after a dist upgrade.

There’s several method’s to hibernate (and suspend): uswsup, tuxonince etc – we won’t be using any of those here.

Steps to fix hibernate

1. Check logs /var/log/pm-powersave.log (and /var/log/pm-suspend.log)
2. Check if you have enough swap
3. Try removing all connected usb devices first before hibernating (my XBOX 360 Wireless receiver stops hibernate from working, see script below)
4. System is hibernating but not resuming? Check /etc/initramfs-tools/conf.d/resume (and do a update-initramfs -k all -u)
5. Still not working? sudo apt-get remove hibernate uswsusp (just to be sure)
6. More info: http://chriseiffel.com/everything-linux/step-by-step-how-to-get-hibernate-working-for-linux-ubuntu-11-04-mint-11/

This script disables all usb controllers using UHCI on hibernate and enables them on resume.

/etc/pm/sleep.d/20_custom-ehci_hcd

#!/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 :)
# Comments added by chriseiffel.com
VERSION=1.1.1
DEV_LIST=/tmp/usb-dev-list
DRIVERS_DIR=/sys/bus/pci/drivers
#DRIVERS="ehci xhci" # ehci_hcd, xhci_hcd
DRIVERS="uhci" # ehci_hcd, xhci_hcd
HEX="[[:xdigit:]]"
MAX_BIND_ATTEMPTS=2
BIND_WAIT=0.1

#This function executes when the computer is going
#into sleep/hibernation. It looks for all devices
#in /sys/bus/pci/drivers with the ehci_hcd, etc
#and adds them to the unbind list
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
}

#Executed on a resume/thaw attempts to rebind the stored drivers
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