Strange Pop! OS 24.04 behavior

atchemey
2026-01-07T22:26:06Z

I have a computer that is not quite powerful enough to run my flight simulators, but which is still quite capable. I tried to sell it for close to what I bought it for, after using it maybe 50 hours, but the stink of "used" was on it, so I only got low ball offers for the system as a whole. Selling the individual components would be better but take substantially more effort. Instead, after finding an absurdly good 64 GB RAM deal ($150 for DDR4, in early December, crazy), I decided to use it to educate myself on some work-adjacent science simulation capabilities, putting it at home to avoid the feeling like I'm doing work (and also so I can install nonsense on it if I want).

I settled on Pop! OS, after finding out it has the best NVIDIA GPU support of the .deb Linux family, and installed 22.04 on it last month. After a standard "oops I messed something up on a new-to-me Linux distro, might as well wipe it," I reset the bios to see if it fixed things, then loaded 24.04 on a live USB and ran the update at POST.

24.04 made some very big changes to Pop! OS, which I won't list, other than one that puzzles me. After installing, I ran Geekbench 6 to benchmark it, and I found out my system CPU performance was about 33% down from the prior benchmark. I rationalized this as being due to no XMP being on, and tried to enter BIOS on boot...but Pop24 refused to enter BIOS, and my motherboard didn't even POST? But it would load into Pop24 without issue? So I was stuck without a way to tune my system. I eventually removed the SSD, hard wiped it on a separate device, and reinstalled Pop22, whereafter I was able to enter BIOS and enable XMP. Performance was restored, and even better than ever.

My question...why is Pop24 different? I tried to disable fastboot. I tried to have it use systemctl to reboot into settings. I tried everything I could find online. The best guess I have is something to do with UEFI? But I have no clue. I'm not really a computer guy, I just futz around, and I don't know what I'm doing.

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