I'm seeing strange behaviour with my Z790-A (D4) and my Strix 4090. I like my Aura colour scheme to be the rainbow purple / magenta fade and have it applied to my Z790-A, G.Skill Ram, ROG Scope RX keyboard, ROG Gladius III mouse and of course my ROG STRIX 4090.
When I start my PC, most of my RGB stuff does it's own thing (standard full colour rainbow) except the 4090 which remembers it's last setting. When I get into Windows and my other RGB stuff picks up the signal to set the correct colour settings the 4090 then goes back to the standard setting (which is called Cyberpunk) even though it is set to sync all devices in the Armoury Crate screen.
Opening Armoury Crate and unchecking and rechecking the 4090 gets it to the correct RGB setting which is great, but each time I reboot or start the PC from fresh I am presented with the same issue.
Other than trashing Armoury Crate does anyone have any ideas?
I had very similar issues, with Aura lighting working inconsistently. Once I set a scenario profile which can be triggered by whatever programs you select, things are much more consistent and I don't even need to start Armoury Crate for that to work. Sounds like your lighting behaviour is quite normal to me, just try the Scenario profiles and see if you can fix it that way. You will still get RGB lighting on defaults until the profile starts though. I set up a profile called Music which means that all 3 of my ARGB headers now create some nice effects when I'm using Music Bee to play music.
Create a new profile in the main screen (below) and then edit in the screen above
I actually have a profile set up for when I play MSFS - all of my RGB goes solid orange to match my Thrustmaster flight stick, this then returns to the purple / magenta fade when I come out of MSFS.
When the 4090 doesn't pick up the correct RGB, it also isn't triggered by the profile either - like it's not detected - yet it shows straight away in AC.
Odd. My 3090TI seems to do it's own thing sometimes as well. To be honest I'm not too bothered, as long as the lights cycle most of the time I'm happy. I also use iCue for my case fans and AIO fan RGB lighting. I have disabled the GPU lighting in iCue, but I guess there could be a conflict under some conditions.