Increase in watchdog task timeouts after Home Assistant 2026.1?

ESPHome
1

I have approximately 50 ESPHome devices deployed using esphome 2025.12, and I recently upgraded to home assistant 2026.1. Two of the devices have started getting frequent “task watchdog” timeouts. In the logs, I see the api component taking over 100ms regularly. These devices are connected via Ethernet, as many of my devices are. They also have UDP packet transports getting a single binary sensor from 4 and 7 other devices. The devices also have DAC7678 components.

I have 3 other identical pieces of hardware nearly identical configurations, but fewer UDP packet transports, and they have not been encountering this issue.

Has anyone else seen this behavior? Should I file a bug, or am I doing something that’s known to be unstable?

2

Does this cause a reboot, or just a log message?

3

It causes a reboot, which is unfortunate. The reboot timings are seemingly random, as far as I can tell.

4

Well, if you can capture any serial logs from the reboot that would be useful. By all means raise an issue but it will need at least a log and preferably a reproducible example - even if it’s one that has to be running for a while.

Intermittent problems are the worst to troubleshoot.