Brightness is not adjusted automatically

please run "switchboard -d power" and provide the output please

I'm unsure how helpful my log is:

matzipan@matzipan-thinkpad:~$ switchboard -d power
[INFO 10:18:47.086919] Application.vala:155: System Settings version: 2.0
[INFO 10:18:47.086969] Application.vala:157: Kernel version: 4.6.0-040600rc7-generic
[DEBUG 10:18:47.087842] [Gtk] Connecting to session manager
[DEBUG 10:18:47.090174] DisplayPlug.vala:206: Activating Display plug
[DEBUG 10:18:47.090305] PlugsManager.vala:91: pantheon-display registered
[DEBUG 10:18:47.090953] ColorPlug.vala:92: Activating Color plug
[DEBUG 10:18:47.091058] PlugsManager.vala:91: hardware-gcc-color registered
[DEBUG 10:18:47.091652] SoundPlug.vala:142: Activating Sound plug
[DEBUG 10:18:47.091731] PlugsManager.vala:91: hardware-gcc-sound registered
[DEBUG 10:18:47.092260] WacomPlug.vala:92: Activating Wacom plug
[DEBUG 10:18:47.092339] PlugsManager.vala:91: hardware-gcc-wacom registered
[DEBUG 10:18:47.092958] keyboard.vala:51: Activating Keyboard plug
[DEBUG 10:18:47.093055] PlugsManager.vala:91: hardware-pantheon-keyboard registered
[DEBUG 10:18:47.093609] mouse-touchpad.vala:122: Activating Mouse-Touchpad plug
[DEBUG 10:18:47.093699] PlugsManager.vala:91: pantheon-mouse-touchpad registered
[DEBUG 10:18:47.094510] Plug.vala:388: Activating Power plug
[DEBUG 10:18:47.102262] Battery.vala:69: battery path:/org/freedesktop/UPower/devices/battery_BAT0 , its a laptop, dbus connected
[DEBUG 10:18:47.105196] PowerSupply.vala:58: power supply path: (null) dbus connected

** (process:7015): CRITICAL **: string_contains: assertion 'self != NULL' failed

** (process:7015): CRITICAL **: string_contains: assertion 'self != NULL' failed
[DEBUG 10:18:47.112785] CliCommunicator.vala:102: lid_close_dock:ignore
[DEBUG 10:18:47.112846] CliCommunicator.vala:107: lid_close:suspend
[DEBUG 10:18:47.127033] PlugsManager.vala:91: system-pantheon-power registered
[DEBUG 10:18:47.133862] Plug.vala:199: Activating Printers plug
[DEBUG 10:18:47.133978] PlugsManager.vala:91: pantheon-printers registered
[DEBUG 10:18:47.134721] BluetoothPlug.vala:103: Activating Bluetooth plug
[DEBUG 10:18:47.134795] PlugsManager.vala:91: network-gcc-bluetooth registered
[DEBUG 10:18:47.136233] Plug.vala:207: Activating Network plug
[DEBUG 10:18:47.174588] Settings.vala:163: Loading settings from schema 'org.gnome.system.proxy'
[DEBUG 10:18:47.175174] Settings.vala:163: Loading settings from schema 'org.gnome.system.proxy.ftp'
[DEBUG 10:18:47.175392] Settings.vala:163: Loading settings from schema 'org.gnome.system.proxy.http'
[DEBUG 10:18:47.175606] Settings.vala:163: Loading settings from schema 'org.gnome.system.proxy.https'
[DEBUG 10:18:47.175806] Settings.vala:163: Loading settings from schema 'org.gnome.system.proxy.socks'
[DEBUG 10:18:47.176003] PlugsManager.vala:91: pantheon-network registered
[DEBUG 10:18:47.195607] OnlineAccounts.vala:290: Activating Online Accounts plug
[DEBUG 10:18:47.196131] Password.vala:41: OnlineAccouts: Activating Password plugin
[DEBUG 10:18:47.196653] yahoo.vala:85: OnlineAccouts: Activating Yahoo plugin
[DEBUG 10:18:47.197006] facebook.vala:58: OnlineAccouts: Activating Facebook plugin
[DEBUG 10:18:47.197337] microsoft.vala:73: OnlineAccouts: Activating Microsoft plugin
[DEBUG ...