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I don't know how , but somehow automatic power-off of usb devices got accidentally enabled. Now my usb mouse goes off even if it's idle for 2-3 seconds. It's really irritating.

This happened after I installed powertop and powernap. Maybe it has something to do with these two applications.

How can I disable this "feature"?

Zanna
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rrj
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3 Answers3

38

Just copy paste the following command in terminal and it will disable auto suspending.

Disabling auto suspending USB

echo 2 | sudo tee /sys/bus/usb/devices/*/power/autosuspend >/dev/null

Disable USB autosuspend

echo on | sudo tee /sys/bus/usb/devices/*/power/level >/dev/null
David Foerster
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Qasim
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It's PowerNap that's doing this.

You can disable just this part of PowerNap's power savings scripts with:

sudo powernap-action --disable usb_autosuspend
Dustin Kirkland
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Could it be that laptop mode tools are causing this? If so, try the following:

  1. Optional: Create a backup of /etc/laptop-mode/conf.d/usb-autosuspend.conf by copying it in your home folder: 

    cp /etc/laptop-mode/conf.d/usb-autosuspend.conf ~/usb.autosuspend.old

  2. Get the USB ID of your mouse/keyboard

    lsusb

    This will return a list including ID xxxx:xxxx for your mouse/keyboard.

  3. Edit the original usb-autosuspend.conf

    sudo gedit /etc/laptop-mode/conf.d/usb-autosuspend.conf

  4. There will be an entry called AUTOSUSPEND_USBID_BLACKLIST='' change this to AUTOSUSPEND_USBID_BLACKLIST='xxxx:xxxx'

  5. This should stop your USB mouse/keyboard from being suspended. Now you either need to restart your computer or restart laptop-mode using

    sudo service laptop-mode restart

Source: http://www.hecticgeek.com/2012/06/fix-usb-mouse-not-working-laptop-mode-tools-ubuntu/

7ochem
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user238948
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