Just adding my experience to this thread. Running 2.4.3133 on a C7 hub and migrated to a C8 Pro hub. Immediately after the migration I got the “Weak Zigbee channel found” notification. The C8 and C7 are using the identical Channel 20 and the channel scan results so that CH 20 is by far the strongest signal. This feels like a bug, so I just dismissed the notification and moving on for now. Zigbee network is working perfectly, if it ain’t broke, don’t fix it!
Just to clarify, the warning is not a bug, but does have somewhat confusing wording...it is not the result of any actual channel strength measurements by the hub. It is intended to get users' attention and encourage them to change to a different Zigbee channel if they are having problems and are on Zigbee channel 20, for the reasons noted by Jeff.
Everyone using Zigbee channel 20 won't have problems, hence the "If you are experiencing issues..." lead-in.
@danabw I get all of that, but having a title that says “Weak Channel Found” is not a suggestion, “found” is a final determination made by the system. I have found a problem, please address.
They should rename the title to something like “Weak Channel Possible”.
There is supposed to be a dismiss button right on it, or maybe you have to click the link to show more first? Not totally sure, I have not actually seen it myself. I know at one point a while back the dismiss was broken but I thought they fixed it.
The dismiss would be on the alert in the bell. The one on the settings page my be permanent? That's the fist I have seen the large warning on the settings page.
Yea... you dismissed the pending platform update alert. My guess is that you, like most of the rest of us that are happily using channel 20, dismissed the Zigbee Channel specific alert many months ago.
The yellow splash notification on the Zigbee settings page has been there for many months, and is not dismissable.