I have a recurrent problem of overheating while compiling, system upgrade, viewing big pdfs. The problem is that this can reach the point when the system/hardware immediately and abruptly switch off the laptop.
I see in the logs that CPU threshold is reached and CPU is throttled, but that doesn’t seems to be enough to avoid the switch off.
Sounds to me like you don’t have enough RAM for those tasks. Is your SWAP partition active when you try those things? Are you trying those things simultaneously?
I usually have more than one application running, but it appears even with only 1 of those tasks running. The SWAP can be active, but not at a high level.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: coreboot
Version: 4.7-Purism-1
Release Date: 02/15/2018
ROM Size: 16 MB
Characteristics:
PCI is supported
PC Card (PCMCIA) is supported
BIOS is upgradeable
Selectable boot is supported
ACPI is supported
Targeted content distribution is supported
BIOS Revision: 4.0
Firmware Revision: 0.0