How do I make changes to /proc/acpi/wakeup permanent?

I had a problem with my Ubuntu 12.04 waking up immediately after going into suspend. I solved the problem by changing the settings in /proc/acpi/wakeup, as suggested in this question: How do I prevent immediate wake up from suspend and/or hibernation?.

After changing the settings, the system goes flawlessly into suspend and stays suspended, but after I wake it back up, the settings in /proc/acpi/wakeup are different from what I set them to.

Before going to suspend:

cat /proc/acpi/wakeup
Device S-state Status Sysfs node
SMB0 S4 *disabled pci:0000:00:03.2
PBB0 S4 *disabled pci:0000:00:09.0
HDAC S4 *disabled pci:0000:00:08.0
XVR0 S4 *disabled pci:0000:00:0c.0
XVR1 S4 *disabled
P0P5 S4 *disabled
P0P6 S4 *disabled pci:0000:00:15.0
GLAN S4 *enabled pci:0000:03:00.0
P0P7 S4 *disabled pci:0000:00:16.0
P0P8 S4 *disabled
P0P9 S4 *disabled
USB0 S3 *disabled pci:0000:00:04.0
USB2 S3 *disabled pci:0000:00:04.1
US15 S3 *disabled pci:0000:00:06.0
US12 S3 *disabled pci:0000:00:06.1
PWRB S4 *enabled
SLPB S4 *enabled

I tell the system to suspend, and it works as it should. But later after waking it up, the settings are changed to either:

USB0 S3 *disabled pci:0000:00:04.0
USB2 S3 *enabled pci:0000:00:04.1
US15 S3 *disabled pci:0000:00:06.0
US12 S3 *enabled pci:0000:00:06.1

or

USB0 S3 *enabled pci:0000:00:04.0
USB2 S3 *enabled pci:0000:00:04.1
US15 S3 *enabled pci:0000:00:06.0
US12 S3 *enabled pci:0000:00:06.1

Any ideas?

---

Thank you for your response. Unfortunately it did not solve my problem.

all of

/sys/bus/usb/devices/usb1/power/wakeup
/sys/bus/usb/devices/usb2/power/wakeup
/sys/bus/usb/devices/usb3/power/wakeup
/sys/bus/usb/devices/usb4/power/wakeup

as well as

/sys/bus/usb/devices/3-1/power/wakeup

are set to disabled, and the notebook still wakes up by itself right after going to sleep. The only thing it seems to react to are the settings in /proc/acpi/wakeup, which keep changing (resetting) every time i power off/restart my notebook.

4 Answers

I ran into this problem again on Ubuntu 12.10. The suggestions from user MTS unfortunately also did not work for me. However, you can write a script to automatically set the usb properties in /proc/acpi/wakeup right before every suspend.

The solution is based on creating a suspend hook (based on this Archwiki article). Save the following as /usr/lib/pm-utils/sleep.d/45fixusbwakeup, and make sure to make it executable (chmod +x /usr/lib/pm-utils/sleep.d/45fixusbwakeup).

#!/bin/bash
case $1 in hibernate) echo "Going to suspend to disk!" ;; suspend) echo "Fixing acpi settings." for usb in `cat /proc/acpi/wakeup | grep USB | cut -f1`; do state=`cat /proc/acpi/wakeup | grep $usb | cut -f3 | cut -d' ' -f1 | tr -d '*'` echo "device = $usb, state = $state" if [ "$state" == "enabled" ] then echo $usb > /proc/acpi/wakeup fi done echo "Suspending to RAM." ;; thaw) echo "Suspend to disk is now over!" ;; resume) echo "We are now resuming." ;; *) echo "Somebody is callin me totally wrong." ;;
esac

What this does is change the status of every USB device that is currently enabled to disabled. If you only want to change specific USB devices, change the for loop in the script. For example to change only USB1 and USB3 change

for usb in `cat /proc/acpi/wakeup | grep USB | cut -f1`;

to

for usb in 'USB1' 'USB3';

Hopefully this helps someone else who has the same problem. This approach solved the issue for me.

6

Perhaps will help?

This is what it says:

For those who are updating to the 3.2 kernel (which should be everyone due to the recent root exploit), you'll notice your USB wakeup is probably broken. They changed the default wakeup policy (), so you'll need to make a couple of changes:

• you no longer need to enable wakeup in /proc/acpi/wakeup, it's enabled by default
• you need to enable wakeup for the USB hub in addition to the device in /sys/bus/usb/devices/*/power/wakeup

So, this:

echo USB1 > /proc/acpi/wakeup
echo enabled > /sys/bus/usb/devices/3-1/power/wakeup

Becomes:

echo enabled > /sys/bus/usb/devices/usb3/power/wakeup
echo enabled > /sys/bus/usb/devices/3-1/power/wakeup

Hopefully this saves others from troubleshooting the same problem.

For Ubuntu 15+, you must use systemd instead of rc.local. You may google "Creating a systemd service" and follow the instructions, but note that redirecting output to /proc/acpi/wakeup is tricky. To get it to work correctly, you must do something like:

/bin/sh -c '/bin/echo XHC > /proc/acpi/wakeup'

Example output for the service file (e.g., /etc/systemd/system/suspendfix.service):

[Unit]
Description=fix to prevent system from waking immediately after suspend
[Service]
ExecStart=/bin/sh -c '/bin/echo XHC > /proc/acpi/wakeup'
Type=oneshot
RemainAfterExit=yes
[Install]
WantedBy=multi-user.target

Or here in this gist

1

The preferred way to do this is by creating a service with systemd.
Adding script in rc.local is the deprecated way.

1. Create a script file wherever you wish. Ex: ~/scripts/disable-devices-as-wakeup.sh.

#!/bin/bash
declare -a devices=(USB0 USB2 US12 US15) # <-- Add your entries here
for device in "${devices[@]}"; do if grep -qw ^$device.*enabled /proc/acpi/wakeup; then sudo sh -c "echo $device > /proc/acpi/wakeup" fi
done

2. Test it by executing it from the terminal.

3. If everything is okay then let's make a service.

$ touch ~/scripts/disable-devices-as-wakeup.service

~/scripts/disable-devices-as-wakeup.service -

[Unit]
Description=Disable devices as wakeup
[Service]
ExecStart=/home/username/scripts/disable-devices-as-wakeup.sh
Type=oneshot
[Install]
WantedBy=multi-user.target

4. Copy or move the service to /etc/systemd/system/.

$ sudo cp ~/scripts/disable-devices-as-wakeup.service /etc/systemd/system/

5. Enable the service.

$ systemctl enable disable-devices-as-wakeup.service

6. Restart the OS and check the status.

$ systemctl status disable-devices-as-wakeup.service

Detailed explanation found on

2