Hue lights transition from 1 to 100% immediately and then go back to 2% and fade up.

[twin owl]

I've been searching reddit and the forums for a few hours but half the problem is I'm not entirely sure what I'm trying to search for.

I have this automation:

alias: Back Garden Evening On
description: ""
triggers:
  - trigger: sun
    event: sunset
    offset: 0
conditions: []
actions:
  - action: light.turn_on
    metadata: {}
    data:
      brightness: 1
    target:
      entity_id: light.back_garden
  - delay: "00:00:05"
  - data:
      brightness: 255
      transition: 1800
    target:
      entity_id: light.back_garden
    action: light.turn_on
mode: single

The idea being that at sunset, light.back_garden turns on (it's already off at this point) at brightness: 1, and slowly transitions to full brightness over a period of half an hour.

What's happening is that the first action is running correctly and the lights come on at minimal brightness, but as soon as the delay finishes, the lights jump to full brightness for a few seconds and then drop down to presumably 2 all the way up to 255.

I'm trying to avoid the 100% at the beginning somehow, but not sure what I'm doing wrong?

[brave mica]

Transition is entirely up to the light bulb to implement, if it doesn't work correctly, could just be a bug with the firmware of the bulb.

I will say I've heard a lot of lights don't support super long transitions, like it was intended to be a few seconds at most. I don't know about Hue.

You could test with a shorter transition, see if that behaves any better

[twin owl]

Oh I see, I didn't realise it was up to the bulb, I assumed that HA periodically sent a new value or something. I'll try a 60 second fade now and see what happens.

[brave mica]

yeah HA doesn't do that

you'd have to write your own automation to implement that kind of staged change