Mount usb to serial adapter CANBUS and can-utils ubuntu?
I know this is a very old thread. But it is still unanswered and while I was searching for a solution I stumbled upon this thread.
The solution to this problem is that slcand does not support this interface. To use it anyway a mapper between the interface and socket can must be used. This adapter can be found at https://github.com/alexmohr/usb-can
After install just run usbcan -s 500000 -d /dev/ttyUSB0