How can I disable USB autosuspend for a specific device?

Question

This is related to the issue discussed in Wireless mouse temporarily freezes (sleeps) on battery power.

Summary: the mouse freezes when operating on battery since it is autosuspended after a certain time and needs more time to wake up.

Disabling USB autosuspend for the mouse's receiver in PowerTOP is a temporary solution, but it does not survive a reboot.

How can I permanently disable the USB autosuspend for only one specific device?

A solution that does not involve installing additional packages is preferred (after all, I want to disable something), but it is not required. Removing PowerTOP (which seems to be a solution for some) is not what I want - I like PowerTOP...

And installing laptop-mode-tools to disable USB autosuspend altogether is not what I want, either, thus the new question.

Also: Will this affect the battery of my notebook? The Logitech unifying receiver for the mouse stays connected all the time, so if that prevents the autosuspend from happening for all devices that would probably be bad.

score 29 · Accepted Answer · edited Dec 02 '19 at 16:59

29

Ubuntu 16.04 (Xenial Xerus)

sudo apt install tlp
sudo lsusb

Find the USB device's input id - it should look like 1234:5678.

Edit the file sudo vi /etc/default/tlp and add your device's input ID to USB_BLACKLIST by adding the following line with your device's input id like so:

USB_BLACKLIST="1234:5678"

Ubuntu 14.04 (Trusty Tahr)

As mentioned here at hecticgeek.com, the trick consists of two parts:

Using lsusb to ascertain the device IDs of the USB devices you wish to disable autosuspend for.

And then adding them to AUTOSUSPEND_USBID_BLACKLIST in the /etc/laptop-mode/conf.d/runtime-pm.conf (usb-autosuspend.conf until Ubuntu 14.04) configuration file (details are well documented in there as well).

edited Dec 02 '19 at 16:59

Peter Mortensen

884

answered Nov 03 '13 at 11:04

dlukes

436

Actually my mouse got lost/stolen shortly after, so I cannot test this. But judging from the .conf file this is exactly the kind of thing I was hoping for :) – black_puppydog Nov 03 '13 at 11:36
Looks like it's AUTOSUSPEND_RUNTIME_DEVID_BLACKLIST now (Ubuntu 17.04) – partofthething Oct 01 '17 at 01:46
2

Dell's Ubuntu laptops with Ubuntu 16.04 LTS have tlp installed rather than laptop-mode-tools, so if you want to blacklist USB devices from being put into autosuspend mode on these laptops, set the USB_BLACKLIST setting in the file /etc/default/tlp - the changes take place immediately – Stuart Caie Jan 01 '18 at 23:51
HIDs are already blacklisting from tlp: /etc/default/tlp
Note: input devices (usbhid) are excluded automatically (see below)

#USB_BLACKLIST="045e:07a5"
– Tom Jun 21 '18 at 16:31
The TLP documentation mentions that it’s a power management for laptops (more specifically ThinkPad). Does it work for desktop PCs? – Konrad Rudolph Feb 21 '19 at 09:39
On TLP 1.5 The list name is USB_DENYLIST="1111:2222 3333:4444" – chriscz Apr 13 '23 at 04:46

score 14 · Answer 2 · edited Dec 02 '19 at 17:21

I had a similar problem with PCs on an Avocent KVM, where laptop-mode-tools was not installed (and didn't want to solve it that way in any case). In my case, autosuspending the KVM made the keyboard and mouse behave erratically (after a few seconds idle, they'd suspend and lose input data for a while until enough clicks and shakes woke them up).

When I ran PowerTOP and toggled USB autosuspend off for the Avocent, PowerTOP told me the command to disable it from the command line was:

echo 'on' > '/sys/bus/usb/devices/3-10/power/control'

The '3-10' bit will be different on different systems. I'm not sure how to determine that other than running PowerTOP, but there's probably some way.

Instead, I used a udev rule to match the product id of my device:

trent+14.04:/etc/udev/rules.d$ cat 10-usb-avocent-kvm-pm.rules

ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="0624", ATTR{idProduct}=="0013", ATTR{product}=="SC Secure KVM", TEST=="power/control", ATTR{power/control}:="on"

To get the proper udev information I ran:

udevadm info -a --path /sys/bus/usb/devices/N-N

This answer helped me stop USB autosuspend causing my Logitech webcam to make me sound like a chipmunk on Skype. This was on a desktop where installing laptop-mode-tools was inappropriate. I was not able, however, to get udev to write to power/control on boot, but was able to accomplish the same thing by setting the autosuspend delay to -1: SUBSYSTEM=="usb", ACTION=="add", ATTRS{idVendor}=="046d", ATTRS{idProduct}=="0809", TEST=="power/autosuspend", ATTR{power/autosuspend}:="-1" — ven42, Apr 08 '20 at 04:02

score 7 · Answer 3 · edited Dec 02 '19 at 17:28

In /etc/laptop-mode/conf.d/usb-autosuspend.conf you will find:

# Enable USB autosuspend feature?
# Set to 0 to disable
CONTROL_USB_AUTOSUSPEND="auto"

You should change it to CONTROL_USB_AUTOSUSPEND="0".

This will automatically make any USB device have the value "on" in /sys/bus/usb/devices/"DEVICE ID"/power/control. This will make the value of the autosuspend files inactive:

$ cat /sys/bus/usb/devices/"DEVICE ID"/power/autosuspend
2
$ cat /sys/bus/usb/devices/"DEVICE ID"/power/autosuspend_delay_ms
2000

score 6 · Answer 4 · edited Sep 16 '12 at 10:42

6

The power options for a USB device are in /sys/bus/usb/devices/n-n/power. Unfortunately, what n-n is for a given device takes some sleuthing to find out, so I think this will prove a stumbling block when it comes to having a script that automatically does

echo -1 > /sys/bus/usb/devices/3-2/power/autosuspend

to turn off autosuspend on that device. The magic n-n does actually appear in the output of

udevadm info --export-db

so I think udev will be your friend here; some kind of udev script keyed on a parameter that identifies your mouse, then runs a script that echos -1 into the relevant file.

edited Sep 16 '12 at 10:42

answered Sep 16 '12 at 10:34

Alex Dekker

69

4

Will this survive a reboot? echoing into /sys seems to be non-permanent, isn't it? – black_puppydog Sep 16 '12 at 18:53
2

Put the command in your /etc/rc.local before the 'exit 0' line – Bryce Sep 18 '14 at 23:51
I have written this gist as an automation for getting the magic number n-n given the device vendor:product id – weshouman Oct 20 '22 at 18:10

score 4 · Answer 5 · edited Dec 02 '19 at 16:55

4

I created my own udev rule:

ACTION=="add", ATTR{idVendor}=="0cf3", ATTR{idProduct}=="3004", RUN="/bin/sh -c 'echo 0 >/sys/\$devpath/authorized'"

edited Dec 02 '19 at 16:55

Eliah Kagan

117,780

answered Mar 22 '16 at 07:42

trey

41
2

score 2 · Answer 6 · edited Dec 02 '19 at 17:27

In Ubuntu 16.04 LTS (Xenial Xerus), I found a solution in /etc/laptop-mode/conf.d/runtime-pm.conf:

# Auto-Suspend timeout in seconds
# Number of seconds after which the USB devices should suspend
AUTOSUSPEND_TIMEOUT=1800

It was originally set for 2 for me. 30 minutes is far more reasonable.

After the change, do:

sudo service laptop-mode restart

I am still not sure how to fully disable it, but this is fine for me now.

How can I disable USB autosuspend for a specific device?

6 Answers6

Note: input devices (usbhid) are excluded automatically (see below)

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