I just finished updating coreboot and enabling my tpm module using the script and instructions from Kyle’s post. When I finished, my computer restarted fine. Two hours later, it suddenly shut down twice. Then upon reboot, I get the following error when I run sudo apt update.
** (appstreamcli:6482): WARNING **: No origin found for file repo.pureos.net_pureos_dists_green_main_dep11_Components-amd64.yml.gz
Reading package lists… Done
Building dependency tree
Reading state information… Done
All packages are up to date.