usb 设备自动挂起问题

• 现象

鼠标停止操作后3秒自动挂起，需要点击才能有反应；键盘也是，需要按一下按键才能有反应

• 解决方法
  https://superuser.com/questions/408683/why-my-usb-mouse-gets-suspended-after-3-seconds-of-inactivity

It‘s a very old question, related with laptop-mode, but I‘ll post my solution:

In Ubuntu 14.04 I edited /etc/laptop-mode/conf.d/usb-autosuspend.conf and change this lines to blacklist usbhid:

# The list of USB driver types that should not use autosuspend.  The driver
# type is given by "DRIVER=..." in a USB device‘s uevent file.
# Example: AUTOSUSPEND_USBID_BLACKLIST="usbhid usb-storage"
## Old value: AUTOSUSPEND_USBTYPE_BLACKLIST=""
AUTOSUSPEND_USBID_BLACKLIST="17ef:6050"
AUTOSUSPEND_USBTYPE_BLACKLIST="usbhid"

In Ubuntu 12.04 I must to edit /etc/laptop-mode/conf.d/runtime-pm.conf and change this lines to blacklist usbhid:

# The list of device driver types that should use autosuspend.  The driver
# type is given by "DRIVER=..." in a device‘s uevent file.
# Example: AUTOSUSPEND_DEVTYPE_WHITELIST="usbhid usb-storage"
## Old value: AUTOSUSPEND_RUNTIME_DEVTYPE_WHITELIST=""
AUTOSUSPEND_RUNTIME_DEVTYPE_WHITELIST="usbhid"

You can also blacklist usb-storage! and you can also blacklist device by ID (AUTOSUSPEND_RUNTIME_DEVID_WHITELIST in Ubuntu 12.04 or AUTOSUSPEND_USBID_BLACKLIST in Ubuntu 14.04).

Then you‘ll need to restart laptop mode for the changes to take effect:

sudo /etc/init.d/laptop-mode restart

And then replug mouse. The mouse will not suspend again.

This works for me at work (ubuntu 12.04) and home (ubuntu 14.04).

Hope It helps ??

ubuntu 16.04 usb 设备自动挂起问题

原文：https://www.cnblogs.com/minding/p/12902128.html