I am trying to update our compute server (HPE, 2xEpyc 7702) to ubuntu 20.04.
There are some instability issues that seem to stem from either LOM or nVME, but i’ll probably sort that out.
One of the main reasons to upgrade was to be able to set “static” frequency & cpu governor… If i read correctly, this is already possible on zen2 with 5.4 kernel?
However if i try using cpupower of cpufreq-info there’s no option. Is there anything obvious i’m missing? Or is still 5.4 not really good enough for zen2?
So another stupid question:
Is there an official way of doing this under ubuntu?
When i was using desktop version of ubuntu there was ukuu, but that has sometimes caused issues with certain drivers at that time…
Now i see mainline (https://github.com/bkw777/mainline) has been forked. Is this the best way to make sure everything get patched correctly?
So it seems that it was probably more issue of old bios (from feb 2020…)
Under centos 8 everything worked with “ancient” kernel and bios (i guess they backport a lot, and add hpe workarounds).
After updating BIOS, all FW i could (NICs, nvme, iLO…) and another reinstall of Ubuntu, everything works as it should.
Cpupower now works out of the box, and stability seems OK.