Thought I would post this here first instead of hardware since I am new.
I installed Ubuntu 22.04 LTS on a system with an Intel i3-6100 cpu without turboboost. Recently, I swapped that cpu for an i7-6700 WITH turboboost. I updated the system BIOS and enabled turboboost within the bios. When I checked the intel-pstate flag for noturbo_boost, it said turboboost was disabled and I didn't have permission to change it. I tried booting a few times with and without turboboost enabled in the BIOS with no luck. Next (to avoid doing a reinstall) I created a bootable flash drive from another PC with Ubuntu 22.04 LTS and booted into it. Same issue, no turboboost and no permission to enable it.
Finally, I formatted the flash drive and changed the ISO file to Ubuntu 18.04 and booted into it. This time, no issue getting turboboost to work. It let me change the pstate flag and started working immediately.
Is this likely a bug? Or just an incompatibility? The PC is from 2016 so seems a bit soon for it to start doing this.
Or, is there something that might be persistent from the installation of 22.04 on my system and on the flash drive? Would reinstalling the OS entirely help? I'd like to avoid it if possible but am willing to if needed.