I have a System76 Lemur 6 issue. It is not a daily driver. It’s used as a travel or backup computer. For about the last six months the laptop has been just randomly shutting down as if it has lost power. Last week I installed Pop!_OS on it and updated it to 19.10. The after the reboot updated the firmware from settings. I hoped the firmware update would fix the problem but no luck. The shutdowns happen randomly and don’t appear related to whether the laptop is being moved or just running on the table.