Maybe it's hal error?
$ lshal -m
Start monitoring devicelist: ------------------------------------------------- 12:55:17.525: platform_i8042_i8042_KBD_port_logicaldev_input condition ButtonPressed = brightness-up 12:55:17.525: computer_logicaldev_input condition ButtonPressed = brightness-up 12:55:18.012: computer_power_supply_battery_BAT0 property battery.voltage.current = 12542 (0x30fe) 12:55:18.738: platform_i8042_i8042_KBD_port_logicaldev_input condition ButtonPressed = brightness-down 12:55:18.754: computer_logicaldev_input condition ButtonPressed = brightness-down
Maybe it's hal error?
$ lshal -m
Start monitoring devicelist: ------- ------- ------- ------- ------- ------- i8042_i8042_ KBD_port_ logicaldev_ input condition ButtonPressed = brightness-up logicaldev_ input condition ButtonPressed = brightness-up power_supply_ battery_ BAT0 property battery. voltage. current = 12542 (0x30fe) i8042_i8042_ KBD_port_ logicaldev_ input condition ButtonPressed = brightness-down logicaldev_ input condition ButtonPressed = brightness-down
-------
12:55:17.525: platform_
12:55:17.525: computer_
12:55:18.012: computer_
12:55:18.738: platform_
12:55:18.754: computer_