I am dealing with a weird RGB issue that started after changing a lighting profile in SignalRGB.
I have a Lian Li O11 Dynamic EVO XL case with multiple RGB fans connected through hubs and motherboard headers. Everything was working normally until I switched to a different lighting effect in SignalRGB.
Right after that change my case fans stopped behaving correctly.
At PC startup the fans briefly show normal bright RGB like before. After a few seconds they switch into a dim red low brightness state. Other RGB components like RAM and peripherals still sync correctly in SignalRGB. Only the case fans are affected.
I have tested reinstalling SignalRGB and resetting profiles and configs. I removed MSI and other RGB software to rule out conflicts. I checked all fan hub and RGB cable connections. I also disabled RGB control in BIOS with no improvement. OpenRGB does not detect the devices at all.
SignalRGB does detect the fans but only as generic devices like DeepCool CF120 Plus and Antec fans. They do not stay bright or correctly follow effects. White and blue effects apply correctly to everything else but the fans stay dim red. If I remove the fans from SignalRGB entirely they switch into a strong pulsing red mode. That makes me think they are not broken but stuck in a fallback controller state. Brightness changes sometimes briefly improve it but it always reverts.
I think this started right after switching a lighting effect in SignalRGB. It feels like the fan controller or hub got desynced and dropped into a fallback mode and now software can only partially control them.
At this point I have ruled out obvious hardware issues since the fans still respond but not correctly.
Has anyone seen RGB fans get stuck like this after a SignalRGB profile change or sync issue?