Determine if the Auxiliary Bus Driver is Present - UG1522

X3522 cards use the auxiliary bus driver. This is provided by some recent Linux distributions. To determine its presence, type:

# ls -d /sys/bus/auxiliary

• If there is output listing the directory, the auxiliary bus driver is already present:

  /sys/bus/auxiliary

  You do not need to install the auxiliary bus driver. Go to Download the Network Driver DKMS Debian Package.

• If there is an error message, the auxiliary bus driver is not present. For example:

  ls: cannot access /sys/bus/auxiliary: No such file or directory

  You must install the auxiliary bus driver yourself. Read the following sections.