Problems with RPi recognizing z-wave stick

Installation
1

I had a system failure with my raspberry pi a couple of days ago. During the boot process I would get a kernel panic message and the system would halt. I was able to get the sd card mounted under a different linux system and recover all the files. I reformatted the sd card, then moved all the files back. My pi can reboot like normal and home assistant is coming up fine except when I install my Aeotech Z-stick there isn’t a /dev/ttyACM0 in the /dev folder. When I run lsusb, the device is listed and I don’t see any error messages in dmesg or /dev/var/syslog. I’m guessing when I copied over the the original files, I copied over something that is preventing /dev/ttyACM0 from loading properly but I don’t know what that is. Any ideas?

Thanks

2

It may well not be ACM0, the simplest way to find out what the device is would to unplug it, reconnect it and then run:

dmesg|tail -n 50

In there (most likely in the last half dozen lines) you should find the details of the stick.

3

Oh sorry, forgot to include that detail. I had tried doing that and unplugging and replugging in the device gives me these messages for dmesg:

[155761.748461] usb 1-1.4: USB disconnect, device number 4
[155764.156420] usb 1-1.4: new full-speed USB device number 5 using dwc_otg
[155764.259668] usb 1-1.4: New USB device found, idVendor=0658, idProduct=0200
[155764.259689] usb 1-1.4: New USB device strings: Mfr=0, Product=0, SerialNumber=0

That is the right idVendor and idProduct. Maybe Mfr, Product, and SerialNumber are strange but I don’t know since I don’t know what they originally were.

4

Ok, what does ls -al /dev/tty* show?

5 
/dev/tty    /dev/tty12  /dev/tty17  /dev/tty21  /dev/tty26  /dev/tty30  /dev/tty35  /dev/tty4   /dev/tty44  /dev/tty49  /dev/tty53  /dev/tty58  /dev/tty62  /dev/ttyAMA0
/dev/tty0   /dev/tty13  /dev/tty18  /dev/tty22  /dev/tty27  /dev/tty31  /dev/tty36  /dev/tty40  /dev/tty45  /dev/tty5   /dev/tty54  /dev/tty59  /dev/tty63  /dev/ttyprintk
/dev/tty1   /dev/tty14  /dev/tty19  /dev/tty23  /dev/tty28  /dev/tty32  /dev/tty37  /dev/tty41  /dev/tty46  /dev/tty50  /dev/tty55  /dev/tty6   /dev/tty7
/dev/tty10  /dev/tty15  /dev/tty2   /dev/tty24  /dev/tty29  /dev/tty33  /dev/tty38  /dev/tty42  /dev/tty47  /dev/tty51  /dev/tty56  /dev/tty60  /dev/tty8
/dev/tty11  /dev/tty16  /dev/tty20  /dev/tty25  /dev/tty3   /dev/tty34  /dev/tty39  /dev/tty43  /dev/tty48  /dev/tty52  /dev/tty57  /dev/tty61  /dev/tty9

/dev/ttyAMA0 looked interesting but I don’t think that is what I’m looking for. That one is linked to serial1. /dev/ttyACM0 was the device I had before I reinstalled so I keep expecting to find that.

6

Easy check to see if it’s AMA0 - disconnect the stick and see what vanishes from there.