I've had a C5 dropping off the network regularly for many years (the C5 is ethernet only fwiw, so this isn't a wifi thing). I've just been dealing with it, but the family is tired of Hue lights not working from my Lutron pico switches. I put a hardware timer on it to reboot nightly at 3am, but it's not staying up long enough. I don't know if it's the hardware or if there is some driver causing it (or if a driver can even be low level enough to cause it). At this point I'm just throwing darts, I'd be willing to upgrade to a C8 if it could solve the problem. And if it's easy to migrate all my drivers/settings over to a new device (hopefully a backup/restore would work). Any thoughts?
This is rarely a hub issue and more of your network having a problem like jumbo frames enabled.
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definitely not jumbo frames. but i'm open to other ideas. very robust 10Gb unifi network here that's extremely solid and reliable. zero issues with any other devices (and i have a couple hundred).
Not a good idea. Cutting power to the hub leads to database corruption which will exacerbate the symptoms you’ve seen.
I’d recommend doing a soft reset followed by a database restore.
How have you verified this?
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Another rare issue that I have seen cause issues like this is a marginal power supply for the Hubitat Hub. Do you have a decent 1-2A USB power supply, and possibly a different microUSB cable that you could try to see if that makes any difference? How about a different Ethernet patch cord? While rare, over the years I have seen these often overlooked items be the root cause of hub issues.
I have been using Hubitat Elevation hubs for the past 6 years, starting with the C3 and now I am running a C8 Pro. I have been using Ubiquiti UniFi switches for a few years now, and I do not have any issues. So it is definitely not an incompatibility issue. My C5 hub did just die one day after a software reboot. So, hardware failures while rare, are not out of the question.
If you do decide to buy a new C8 or C8 Pro hub, you should be able to create a Migration Cloud backup that will allow you to easily migrate to the new hub. The only gotcha is if you are using an external Z-Wave radio dongle. If I recall correctly, not all of those will work seamlessly during the migration process.
And here are the details regarding C5 hub and Z-Wave migration
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Thanks for all that info, I didn't know about the pro but just decided to take the plunge and ordered a pro. I've for sure gotten my $$$ worth out of this C-5, so what the heck, let's see if this solves things.
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so far so good with the C8P. migrated from my C5 yesterday and it's still up.
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