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I've recently bought a compact Bluetooth keyboard. In Ubuntu, it works fine when wired, but when connecting it with Bluetooth, only some keys work, those around the U, and they correspond to a numeric keypad. I can fix this by switching off the BloqNum key with other keyboard, but the problem persists when I'm logging in, so in practice this doesn't solve my problem, since I would like to use just the BT keyboard.

Is there a way to change this behaviour in Ubuntu? I've seen some solutions involving access to System → Preferences → Keyboard → Layout → Layout Options → Miscellaneous compatibility options, but I can't find those options in my Ubuntu 19.04.

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  • Thanks for the editing Elia, much better now – magomar Aug 20 '19 at 6:36
  • Those options are in Gnome-Tweaks sudo apt install gnome-tweaks – UnKNOWn Aug 20 '19 at 8:46
  • Thanks, I have already searched there, and coudn't find the Miscellaneous compatibility options section. I have searched again, and now I found it, but it didn't solve my problem, I'm still unable to use my BT keyboard at the logging screen. – magomar Aug 21 '19 at 6:35
  • after logging in, is the BT keyboard working as expected? i.stack.imgur.com/tjHPd.png – UnKNOWn Aug 21 '19 at 6:37
  • Yes, it is. Anyway, there there is another problem with function keys not working, but to be honest, Linux was not officially supported for this keyboard (Keychron K2) so nothing to complain here. I think I will sell my two keyboards to people using Windows or Mac, since it work swiftly with these O.S. – magomar Aug 22 '19 at 16:28
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I had the same issue (with the same keyboard), and managed to solve this using the numlockx package. Simply:

sudo apt install numlockx                                                                                                                                                                                                                                                                                                                                                          
numlockx off                                                                                                                                                                                                                                                                                                                                                                       

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  • thanks, but the problem persists while logging into the system, so I'm still unable to use the keyboard until logged. And yet I can't use function keys. I think I'm gonna sell my two keyboards to mac/windows users. – magomar Sep 17 '19 at 16:43
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This should fix your issue, it did for me with Keychron K4.

echo 0 | sudo tee /sys/module/hid_apple/parameters/fnmode

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