Device: /org/freedesktop/UPower/devices/DisplayDevice power supply: no updated: 2020년 09월 09일 (수) 오후 05시 39분 03초 (2186261 seconds ago) has history: no has statistics: no unknown warning-level: none icon-name: 'battery-missing-symbolic' Daemon: daemon-version: 0.99.11 on-battery: no lid-is-closed: no lid-is-present: no critical-action: PowerOff