linux-bus-reset-tools

Tools that reset specific interfaces, helpful for avoiding physically unplugging remote or embedded devices.

They need to run as root, and are somewhat indiscriminate - remember that the bus they're resetting might include your keyboard or network controller, and be prepared to have to reboot your system by other means; these are tools that might save you a reboot, but you're using them because things have already gone wrong, so don't expect too much.

pci_reset

usage: pci_reset.py [-h] [--pci-bus PCI_BUS] [--pci-id PCI_ID] [--usb2] [--usb3]

pci_reset - does an unbind/bind of an entire device

optional arguments:
  -h, --help            show this help message and exit
  --pci-bus PCI_BUS
  --pci-id PCI_ID, -s PCI_ID
                        raw PCI id (no checking)
  --usb2, -2            Find one usb2(ehci) controller and whack it
  --usb3, -3            Find one usb3(xhci) controller and whack it

usb_reset

usage: usb_reset.py [-h] (--path PATH | --bus BUS DEV | --vendor VENDOR)

usb_reset - does a USBDEVFS_RESET on a device, causing automatic re-enumeration.

WARNING: reset'ing some devices appears to only make things
worse, so this currently is a last resort.

optional arguments:
  -h, --help       show this help message and exit
  --path PATH      raw /dev/bus/usb path (use the other args instead)
  --bus BUS DEV    bus-id dev-id
  --vendor VENDOR  vendor:product device *class*, use the first one found

usb_unbind

usage: usb_unbind.py [-h] vendor [product]

usb_unbind - uses the unbind/rebind sys-protocol, based on vendor-product ids.

positional arguments:
  vendor      vendor id (or vendor:product)
  product     product id

optional arguments:
  -h, --help  show this help message and exit