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started the laptop and it shut down by itself after i logged in for some reason?

found this in the journal:

Jan 18 18:58:59 reform.qwertqwefsday.eu kernel: thermal thermal_zone0: cpu-thermal: critical temperature reached, shutting down
Jan 18 18:58:59 reform.qwertqwefsday.eu kernel: reboot: HARDWARE PROTECTION shutdown (Temperature too high)

now as I said because that happened within 1 minute of me booting it up from "dark and cold" i'm kinda confused about how it could have gotten to a "critical temperature" so fast.

this happened before as well. after powering the laptop up again everything seems fine. last time it took two tries to get it to work.

my current theory is that because i'm not heating my place much its maybe hitting some (maybe unintended) lower bound? that would explain why it works after retries.

but is the temperature watchdog or whatever this is started before i can type stuff in to a TTY?

minute

@Johann150 sounds unusual. the temperature monitoring is part of the kernel driver (qoriq_thermal). the sensor is internal to the soc. maybe a glitch in the readout?

@mntmn @Johann150 fwiw i also had some weird glitches with thermal in Linux on my Reform. Though never related to "critical temp" specifically, but it would get stuck at the same temperature for eternity until a reboot.
When I implemented thermal driver in 9front following the specs, it never glitched there :/

@sigrid @Johann150 hmm. sounds like a bug in then linux driver then.