With the 4.19.4 kernel I keep getting input events from what i suspect is the lid sensor, which for some reason results in it spamming a "+" character in lightdm a lot. This makes it really hard to enter a password. Once in xorg everything keeps quiet though.
evtest /dev/input/event2
Input driver version is 1.0.1 Input device ID: bus 0x19 vendor 0x1 product 0x1 version 0x100 Input device name: "pyra-lid-wakeup" Supported events: Event type 0 (Sync) Event type 1 (Key) Event code 240 (Unknown) Event type 5 (?) Event code 0 (?) Testing ... (interrupt to exit) Event: time 1544296796.517339, type 1 (Key), code 240 (Unknown), value 1 Event: time 1544296796.517339, -------------- Report Sync ------------ Event: time 1544296796.540137, type 1 (Key), code 240 (Unknown), value 0 Event: time 1544296796.540137, -------------- Report Sync ------------ Event: time 1544296796.647227, type 1 (Key), code 240 (Unknown), value 1 Event: time 1544296796.647227, -------------- Report Sync ------------ Event: time 1544296796.688460, type 1 (Key), code 240 (Unknown), value 0 Event: time 1544296796.688460, -------------- Report Sync ------------ Event: time 1544296796.868398, type 1 (Key), code 240 (Unknown), value 1 Event: time 1544296796.868398, -------------- Report Sync ------------ Event: time 1544296796.876633, type 1 (Key), code 240 (Unknown), value 0 Event: time 1544296796.876633, -------------- Report Sync ------------ Event: time 1544296797.067187, type 1 (Key), code 240 (Unknown), value 1 Event: time 1544296797.067187, -------------- Report Sync ------------ Event: time 1544296797.091308, type 1 (Key), code 240 (Unknown), value 0 Event: time 1544296797.091308, -------------- Report Sync ------------