I'm running OMV 7.1.1-1 Armbian 24.5.1 with Linux 6.6.31-current-odroidxu4.
I haven't had any problems applying new updates.
I assume your problem with the package updates is the root of your CPU frequency problems.
I don't have any experience with setting the CPU frequencies.
I just applied the new update - OMV 7.2.1-1 . Everything is still fine.
I ran the armbian-config utility and noticed that the CPU speed setting was 'false'. I left it the same and exited. Upon closing the utility, there was a message that the SOC runs between 200 and 2000 MHz. I don't believe that I changed anything except clicking 'done'.
My HC2 now runs perfectly normal once again. Before and after reboot. Fast SSH and RSYNC.
My Odroid HC2 has also slowed. Besides the SSH slowness, my RSYNC data backups are taking much longer. I haven't researched the problem yet.
