I've got an m4v2 running current armbian (Armbian_19.11.4_Nanopim4_bionic_legacy_4.4.192_desktop.7z)   I get a stack of messages on tty1 and in dmesg stating "get wrong frequency".  it was also logging via syslog, but I have disabled those from logging.  it also seems to generate one of these messages every time I hit a key on the keyboard.  somehow related to kbd interrupt?   ondemand cpu freq scaling works,  running cpu intensive jobs, the following frequencies were observe