What does adjtimex: ntpd could be using obsolete ADJ_TICKADJ mean?
This message only appears if you are using the new nanokernel clock model, usually by having applied a recent PPSkit. Thus the message is coming directly from the kernel, or more precisely from adjtimex(). That function is used to implement adjtime(), ntp_gettime(), and ntp_adjtime(). The constant ADJ_TICKADJ (0x2000) is an extension to ntp_adjtime() that allows to set the value of tickadj (similar extensions use constants named ADJ_OFFSET_SINGLESHOT or ADJ_ADJTIME, ADJ_TICK). Unfortunately that value is also used for MOD_NANO in the latest kernel clock algorithm. Therefore it was decided to relocate conflicting bits, thereby causing incompatibilities with old software that uses these extensions. However the decision is not critical as only very few programs use these extensions. At this point, it’s also clear that the kernel can’t decide whether a new program is using a new function, or an old program is trying to use the old function (thus the vague wording). If you really need the n
