How to prevent USB ports going into Sleep Mode?

English Hardware
1

Hi

I have a system that requires the USB ports not go into Sleep mode. How do I ensure this? I am new to Linux and do not know what commands should be used to guarantee the USB ports are always powered and active.

Thanks,
Simon

2

Change settings in BIOS.

3

Hi

I set the autosuspend parameter to -1 in /sys/module/usbcore/parameters/autosuspend and this seems to have solved my issue. There were no USB power settings in the BIOS.

Simon

4

I assume you understand that that the file system on /sys is of type sysfs and thus a pseudo file system that is created during boot and lost at shutdown?

So you must re-do this after every boot.

5

@simonwhite:

You’ll have to dive into some Kernel parameters: <https://www.kernel.org/doc/html/v4.16/driver-api/usb/power-management.html>

  • Add “usbcore.autosuspend=-1” to the kernel’s boot command line.
  • N.B.
    : This’ll disable the Auto Suspend on ALL the USB interfaces …
6

look at this post:
https://forums.opensuse.org/showthread.php/540029-SOLVED-bluetooth-keyboard-mouse-loosing-connection

and inside the same tlp file, you will find settings on how to disable the suspend of usb.
search for USB_AUTOSUSPEND and be sure to set it to 0 (zero)

hope it helps