[26383.139688] anx7688 0-0028: recv ocm message cmd=0xf2 01 f2 Ød
[26383.139732] anx7688 0-0028: received HARD_RST, idiot firmware is bored
This indicates that the PinePhone is encountering issues with the anx7688 modem driver and is receiving a Hard Reset (HARD_RST). The "idiot firmware is bored" is likely a humorous or sarcastic remark about the perceived quality or stability of the modem firmware causing this issue.
Based on the "bored" remake, I assume it probably has to do with some sort of wake state, where after some time of not receiving signals the modem hardware turns off then doesn't wake when signals are sent, requiring a hard reset to power on, but that's just speculation.
The PinePhone uses a power management processor called "CRUST" to achieve great standby numbers, but it can lead to issues with the modem waking up after deep sleep, so I believe my speculation is plausible.
Maybe a possible fix would to be to send the modem dummy "do nothing" packets or signals at repeating intervals to keep the hardware awake.
Edit : my speculation here seems incorrect, thus the solution is incorrect as well.
See below.