Troubleshooting offline devices | Home Assistant | Page 1

sinful onyx Oct 18, 2022, 4:13 PM

#

@shadow bobcat Let's move this discussion into a thread to not pollute the main channel

shadow bobcat Oct 18, 2022, 4:13 PM

#

sure

#

/config # zigpy radio znp /dev/cu.usbserial-1420 energy-scan
2022-10-18 12:12:07.789 Storinator zigpy.application ERROR Couldn't start application
Traceback (most recent call last):
File "/usr/local/lib/python3.10/site-packages/serial/serialposix.py", line 322, in open
self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
FileNotFoundError: [Errno 2] No such file or directory: '/dev/cu.usbserial-1420'

#

so looking at if I can find the radio it wants

#

root@Storinator:~# zigpy radio znp /dev/cu.usbserial-1420 energy-scan
-bash: zigpy: command not found

sinful onyx Oct 18, 2022, 4:15 PM

#

The example is copy/pasted from my environment, it's just using an example serial port path for macOS

shadow bobcat Oct 18, 2022, 4:15 PM

#

oh wait

sinful onyx Oct 18, 2022, 4:15 PM

#

Look in /dev/serial/by-id/ for Linux

shadow bobcat Oct 18, 2022, 4:15 PM

#

duh it kicked me out

#

/config # zigpy radio znp /dev/ttyUSB0 network info
Usage: zigpy radio [OPTIONS] {ezsp|deconz|xbee|zigate|znp} PORT COMMAND
[ARGS]...
Try 'zigpy radio --help' for help.

#

ok

#

my coordinator is on /dev/ttyUSB0

sinful onyx Oct 18, 2022, 4:16 PM

#

I always prefer the by-id symlink, since it'll be stable across environments

#

And if you (or the kernel) change the order of your serial ports

shadow bobcat Oct 18, 2022, 4:18 PM

#

yea I get what you mean, but for the sake of testing this once now, that way is fine

#

so yea the documentation is off on that page, says to read network info to run that network command, but 'network' is not a valid command 🤦‍♂️

#

this is why I can't stand linux lol

sinful onyx Oct 18, 2022, 4:24 PM

#

Which network command?

shadow bobcat Oct 18, 2022, 4:24 PM

#

Reading network information
$ zigpy radio znp /dev/ttyUSB0 network info

sinful onyx Oct 18, 2022, 4:25 PM

#

Oh, it's just info

shadow bobcat Oct 18, 2022, 4:25 PM

#

/config # zigpy radio --help
Usage: zigpy radio [OPTIONS] {ezsp|deconz|xbee|zigate|znp} PORT COMMAND
[ARGS]...

Options:
--baudrate INTEGER
--help Show this message and exit.

Commands:
backup
change-channel
energy-scan
form
info
permit
reset
restore
/config # zigpy radio znp /dev/ttyUSB0 network info
Usage: zigpy radio [OPTIONS] {ezsp|deconz|xbee|zigate|znp} PORT COMMAND
[ARGS]...
Try 'zigpy radio --help' for help.

Error: No such command 'network'.

sinful onyx Oct 18, 2022, 4:25 PM

#

No network

shadow bobcat Oct 18, 2022, 4:26 PM

#

nope

#

I only have one usb device, so that /dev/ttyUSB0 command should work fine

sinful onyx Oct 18, 2022, 4:26 PM

#

It will run fine if you replace energy-scan with info

shadow bobcat Oct 18, 2022, 4:27 PM

#

ah it is

#

scan is going now

#

Channel energy (mean of 5 / 5):

Lower energy is better
Active Zigbee networks on a channel may still cause congestion
TX on 26 in North America may be with lower power due to regulations
Zigbee channels 15, 20, 25 fall between WiFi channels 1, 6, 11
Some Zigbee devices only join networks on channels 15, 20, and 25
Current channel is enclosed in [square brackets]

[11 ] 20.71% ####################
12 35.29% ###################################
13 30.43% ##############################
14 38.82% ######################################
15 48.31% ################################################
16 70.04% ######################################################################
17 92.08% ############################################################################################
18 89.80% #########################################################################################
19 42.43% ##########################################
20 38.12% ######################################
21 35.06% ###################################
22 46.75% ##############################################
23 47.06% ###############################################
24 26.90% ##########################
25 20.47% ####################
26* 19.69% ###################

sinful onyx Oct 18, 2022, 4:31 PM

#

Looks like you have a very noisy WiFi network on WiFi channel 6

#

Or one with a 40MHz channel width?

shadow bobcat Oct 18, 2022, 4:32 PM

#

I have 2.4 and 5g on 2 APs in a mesh network

#

I remember when I set it up, I believe channel 11 was best

sinful onyx Oct 18, 2022, 4:33 PM

#

Can you try moving your 2.4GHz AP to WiFi channel 11?

shadow bobcat Oct 18, 2022, 4:33 PM

#

looking on a scanner, my 2.4 is at 11now

#

nothing on 6

sinful onyx Oct 18, 2022, 4:34 PM

#

Something very noisy is on WiFi 6/Zigbee 17: https://img.community.ui.com/5f743aa0-9c43-44fb-8889-afd9eccba833/comments/d1ae2c9e-9162-47e2-abcc-12e54862b200/82ccb020-c270-45fc-995c-f837ada4f9c3

#

If it's not something you're intentionally emitting, that would be a little concerning

shadow bobcat Oct 18, 2022, 4:35 PM

#

Bah can't post a pic here

#

I'd show you the screenshot

sinful onyx Oct 18, 2022, 4:37 PM

#

I believe you but the Zigbee scanner doesn't lie 😆. Noisy power supply? WiFi mesh system automatically picking a channel? Air conditioning fan motor? Refrigerator?

shadow bobcat Oct 18, 2022, 4:37 PM

#

ok so is that scan just from the coordinator or the routers as well?

sinful onyx Oct 18, 2022, 4:38 PM

#

It can do routers if you pass --nwk 0x1234

#

Something is emitting enough RF noise to peg the channel utilization to 92% on the stick on 17. I can only do that when using a second stick and intentionally using a manufacturing command that emits noise at max power levels.

shadow bobcat Oct 18, 2022, 4:38 PM

#

ok so this scan is just the coordinator then. So there is a lot in the network rack, but smaller devices, like the server, cable boxes, switches

#

no big heavy house appliances nearby

#

A/C is not on

#

oh you know what

#

outside the basement window maybe 10 feet away is a ductless A/C unit that is used for heat too, for the inlaws

sinful onyx Oct 18, 2022, 4:40 PM

#

Try disabling it and waiting for the fan to spin down, that could be causing a problem

#

You may also be able to shield the wall with foil or something

shadow bobcat Oct 18, 2022, 4:41 PM

#

I can just flip the breaker and test

sinful onyx Oct 18, 2022, 4:41 PM

#

Or buy an Ethernet-connected coordinator and move it elsewhere in your home

shadow bobcat Oct 18, 2022, 4:44 PM

#

hmm

#

ok but why would channel 17 affect zigbee if my zigbee is on channel 11?

#

that's the whole point of selecting channels

#

but now seeing my AP may have moved my wifi to channel 11 now as well

sinful onyx Oct 18, 2022, 4:46 PM

#

WiFi and Zigbee share frequencies but their channel numbers are different, 11 is a different frequency for both

shadow bobcat Oct 18, 2022, 4:47 PM

#

oh ok

#

that seems dumb and purposely confusing lol

green ridge Oct 18, 2022, 4:47 PM

#

https://support.metageek.com/hc/en-us/articles/203845040-ZigBee-and-WiFi-Coexistence

sinful onyx Oct 18, 2022, 4:47 PM

#

Your noise is also just centered on 17, it's bleeding into a lot of surrounding channels. The energy scan from what I remember only measures the noise floor, it's not 100% indicative of the usability of a channel

shadow bobcat Oct 18, 2022, 4:48 PM

#

yes well channels do have a width, so it will show like that

sinful onyx Oct 18, 2022, 4:50 PM

#

Not that wide

shadow bobcat Oct 18, 2022, 4:52 PM

#

5 channels wide

#

so looks like my AP is moving between channel 1 and 11, leaving 6 free. 6 has the lowest interference from somebody elses wifi maybe a neighbor, but closest house is a good 250ft away

#

6 would be zigbee channel 17 lol

#

that must be why then, the AP must see the noise there and not use it

sinful onyx Oct 18, 2022, 4:58 PM

#

For comparison, here's a USB stick sitting on top of my Unifi AP:

 -  20      37.80%  #####################################
 -  21      46.12%  ##############################################
 -  22      58.20%  ##########################################################
 -  23      60.86%  ############################################################
 -  24      51.37%  ###################################################
 -  25      48.47%  ################################################
 -  26*     46.43%  ##############################################

shadow bobcat Oct 18, 2022, 4:58 PM

#

wasn't the ductless unit causing the noise

#

my APs are unifi as well

sinful onyx Oct 18, 2022, 4:59 PM

#

Yours has a sharp peak at 17, it doesn't seem like it has a real channel width and then decaying sidebands like a 2.4GHz AP does. It just emits noise all over.

shadow bobcat Oct 18, 2022, 4:59 PM

#

yea it's not a wifi thing, its just something noisy, like a spike

#

I wonder if I can move the coordinator around on that extension cable to try and find the source of the noise

#

it can be a helpful scanner tool

sinful onyx Oct 18, 2022, 5:00 PM

#

Go for it. zigpy-cli is installable on Windows and macOS if you have Python 3.10 installed.

#Troubleshooting offline devices

Channel energy (mean of 5 / 5):