Openhab 3.0 - no access to z-wave usb-stick

snap
1

Dear all!

After upgrade to OH 3.1.0 (was 2.5) I have no access to z-wave stick. Before upgrade it was working out-of-the-box.

I don’t understand if I do something wrong or the snap has some issues.

demison@rpi4-openhab:~$ snap version
snap    2.51.3
snapd   2.51.3
series  16
kernel  5.3.0-1040-raspi2

demison@rpi4-openhab:~$ snap list openhab
Name     Version  Rev   Tracking       Publisher  Notes
openhab  3.1.0    1124  latest/stable  openhab    -

demison@rpi4-openhab:~$ ll /dev/ttyA*
crw-rw-rw- 1 root dialout 166,  0 Aug 15 10:00 /dev/ttyACM0
crw-rw-rw- 1 root dialout 204, 64 Aug 15 10:00 /dev/ttyAMA0

demison@rpi4-openhab:~$ snap connections openhab
Interface       Plug                    Slot                   Notes
gpio            openhab:gpio            -                      -
home            openhab:home            -                      -
i2c             openhab:i2c             -                      -
mount-observe   openhab:mount-observe   :mount-observe         -
network         openhab:network         :network               -
network-bind    openhab:network-bind    :network-bind          -
raw-usb         openhab:raw-usb         :raw-usb               -
serial-port     openhab:serial-port     :aeotecz-stickgen5zw0  manual
spi             openhab:spi             -                      -
system-observe  openhab:system-observe  :system-observe        -

I see that OH tries to locate the stick. I thing, there’s an error in apparmor profile.

demison@rpi4-openhab:~$ dmesg
[416482.496273] audit: type=1400 audit(1629038061.686:78194): apparmor="DENIED" operation="open" profile="snap.openhab.openhab" name="/sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/idVendor" pid=19058 comm="OH-usb-serial-d" requested_mask="r" denied_mask="r" fsuid=0 ouid=0

I’ve tried to correct it, but the Thing is still offline.

In Karaf logs I see only one WARN that’s repeated 15 seconds:
17:36:37.407 [WARN ] [xsysfs.internal.SysfsUsbSerialScanner] - Could not extract USB device information for serial port org.openhab.core.config.discovery.usbserial.linuxsysfs.internal.SysfsUsbSerialScanner$SerialPortInfo@2bfbe54c: /sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/idVendor

I have “Z-Wave Binding” installed.
If I create Thing “Z-Wave Serial Controller”, it’s always in OFFLINE status.

Best regards,
Dmitry

2

Thanks for reporting it. I believe this is a bug in the raw-usb interface specification and have opened https://github.com/snapcore/snapd/pull/10624 with a proposed fix. Once it lands, you will be able to refresh snapd from edge channel to get it right away.

3

The change has landed in master. If you refresh snapd from edge (snap refresh --edge snapd) you should get the snap with a fix. It’d be great if you could verify that it that the problem is gone.

4

Hi Maciej!

Thanks for your help! The new trouble is that both of my two Raspberry Pi 4 with Ubuntu Core are suddenly not responding. They even does not request IP from my DHCP Server. I’ll try to connect them to screen to see what is wrong.
I hope this is not related to the update Ubuntu Core received…

I’ll verify the problem and write here!

5

That was a Rainbow freeze. At one time on both RPi4 with Ubuntu Core on 17th Aug after pi-kernel snap update. I’ve made clean new version of Ubuntu Core sd-card and copied system-boot from it to “freezed” versions. It started like a charm!

But the main problem is here! I have no access to my z-wave usb-stick. :frowning:

In everyday use I have MacMini. I’ve installed Ubuntu 20.04 Desktop in Parallels. Then I’ve installed Openhab snap, connected stick to Parallels… And… Nothing… My be the problem is in Openhab Snap???

6

is that a standard Ubuntu Core or something you built yourself with an adjusted gadget snap ?

there was Changes in pi/pi-kernel DTB handling recently, custom gadgets need to be re-based for this …

7

I use standard Ubuntu Core installed with Raspberry Imager.