The brightness hotkeys on my lenovo edge 2-in-1 are F11 and F12, but they don't work on Ubuntu for some reason. when testing on the keyboard layout screen in the text entry settings on Ubuntu 16.04, it shows nothing happenjng when I press these keys. when running xev command, there is no output on the terminal when I press these keys. I tried setting the brightness hotkeys using keyboard shortcuts, which show up fine in xev, using xdotool command to simulate the brightness keys being pressed, but this doesn't work no matter what shortcut I use and in the keyboard layout, it only shows the modifier keys being pressed, never the last key in the shortcut. I should note that using the xdotool commands I am using work fine from the command line (using XF86MonBrightnessUp and XF86MonBrightnessDown. I found an indicator applet that I can use to control brightness to some degree, but I'd prefer to have my brightness keys working again if it is at all possible

  • In terminal type 'acpi_listen'. You'll have to install 'acpid' if instructed. Then use your function control keys and update your question with the terminal output. – WinEunuuchs2Unix Sep 21 '16 at 17:11
  • @WinEunuuchs2Unix there is no output from 'acpi_listen' when I press the brightness keys or when I try a keyboard shortcut – dakatk Sep 21 '16 at 17:17
  • Hopefully another lenovo user will respond with the proper acpi setup. I'm on my research challenged phone right now. – WinEunuuchs2Unix Sep 21 '16 at 17:19
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    I'm having exactly the same problem with an Ideapad 500S-ISK. All the Fn-Buttons, except the Brightness, are working. When I use Volumen Down in acpi_listen i get button/volumedown VOLDN 00000080 00000000 K. But when I test the screen brightness, there is no output at all. There is a similar question here: askubuntu.com/questions/830948/… – 0xAffe Dec 10 '16 at 13:23
  • +1 Had the same issue for the Ideapad 500s. Oh, I was the asker for the question linked above. Did anyone manage to fix the issue? – Vivek Ghaisas Dec 9 '17 at 18:15

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