Background: One of my device is a Snapdragon tablet, I use kde on it, I can’t bring up my dsi panel yet, I can only boot it with framebuffer(simplefb), graphics support is implemented by llvmpipe.
Recently, I just updated to plasma 6.2.0, my device receives a dummy brightness control device(Unknown-1), I think this is a software method to control, because I can’t bring up my dsi panel yet. Because of the software method, cpu keeps fully loading, I am suffering the thermal issue and the display lag.