Can't adjust screen backlight on Legion 5 (2021) AMD

bugs.launchpad . net/ubuntu/+source/linux/+bug/1944094 explains my problem. (Including the comments) TLDR, I have an Optimus laptop (specifically the Lenovo Legion 5 15ACH6, not to be confused with the legion 5 15ACH5 that came out in 2020.) I can change the display brightness when it’s running in dGPU only mode after adding a kernel parameter in grub, but when running hybrid or iGPU only, I can’t change display brightness, no matter what parameter trickery I try. Any ideas on what might be the fix or where to stick this so it actually gets Seen? It’s not really effecting that many people, so it isn’t really being looked into by the people that actually know what they are doing, it’s just a bunch of hobbyists that don’t really understand much, (like me.)

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