When I turn on a DALI light via HA, it turns on at 1% brightness. The DALI gateway itself actually turns on every light at 50% brightness, so I suspect that HA is sending the wrong value after turning it on.
Is HA trying to restore the previous brightness level? Since the lights are dimmed, the last brightness level is nearly 0. This would explain what happens when they’re turned on.
Can I configure HA so that it doesn’t send a brightness value when turning the lights on, but only sends “On”?
Hi!
Since this has a Knx tag, I assume you are talking about a Knx-Dali gateway integrated to HA via Knx?!
If so, you can just use the group monitor to see what exact values are sent. This is dependent on your configuration (group addresses mostly).
Hi farmio,
thank you for the tipp using the group monitor. After switching the lights on using the Gira App it was obvious that....I just sent the on command to the wrong group address 
After using the right group address it works as expected. Thank you.