Physical buttons don't work

[denysvitali]

I'm pretty sure it is an error caused by libevent, that doesn't recognize the Power, Vol +, Vol - events.
Apparently they work in GNOME (or they were working at some point).

GPIO:

[root@pixel-c ~]# cat /sys/kernel/debug/gpio
gpiochip0: GPIOs 0-255, parent: platform/6000d000.gpio, tegra-gpio:
 gpio-12  (                    |Lid                 ) in  hi IRQ
 gpio-83  (                    |PP1800_CAM          ) out lo    
 gpio-100 (                    |Volume Up           ) in  hi IRQ
 gpio-169 (                    |jdi-enable          ) out hi    
 gpio-170 (                    |jdi-reset           ) out hi    
 gpio-171 (                    |PP1800_LCDIO        ) out hi    
 gpio-172 (                    |PPLCD_VDD           ) out hi    
 gpio-189 (                    |Power               ) in  hi IRQ
 gpio-191 (                    |Volume Down         ) in  hi IRQ
 gpio-202 (                    |Tablet Mode         ) in  hi IRQ

Evtest output

Testing ... (interrupt to exit)
Event: time 1502312217.717873, type 1 (EV_KEY), code 114 (KEY_VOLUMEDOWN), value 1
Event: time 1502312217.717873, -------------- SYN_REPORT ------------
Event: time 1502312217.907894, type 1 (EV_KEY), code 114 (KEY_VOLUMEDOWN), value 0
Event: time 1502312217.907894, -------------- SYN_REPORT ------------
Event: time 1502312219.631962, type 1 (EV_KEY), code 115 (KEY_VOLUMEUP), value 1
Event: time 1502312219.631962, -------------- SYN_REPORT ------------
Event: time 1502312219.813930, type 1 (EV_KEY), code 115 (KEY_VOLUMEUP), value 0
Event: time 1502312219.813930, -------------- SYN_REPORT ------------
Event: time 1502312222.179026, type 1 (EV_KEY), code 116 (KEY_POWER), value 1
Event: time 1502312222.179026, -------------- SYN_REPORT ------------
Connection to 192.168.1.80 closed by remote host.
Connection to 192.168.1.80 closed.