I'm using Fedora 37 and with my EVGA 3080Ti XC3, I was able to use bzminer to adjust clocks and power limits.
However, I have another machine with a EVGA 3090 FTW3 and I can't get bzminer to adjust the lock memory clock. Power limit works, not sure if the lock core clock worked or not (lower than specified in the setting, but it could be because the memory is still at the stock 9751 MHz).
Thinking it may be a Linux thing, I booted into Windows 11, and same thing. So does bzminer have a problem with OC settings with 3090s?
PS: In all instances, I ran with sudo (Linux) and admin (Win).
I have not used Fedora for mining and have not used Windows for a long time, but I can suggest you try Hive OS. There is a very convenient interface for setting the core frequency, memory frequency and power limit. It is also convenient to change the miner very quickly in order to compare the hashrate and check for errors on the selected miner.
These are not mining rigs, they are 2 standalone PCs. Still doesn't explain why bzminer can control the memory clocks on a 3080Ti but not the 3090.