Before I formatted my notebook, the onboard keyboard worked perfectly on Debian 8 with Gnome 3. Now, after installing Debian 9 with a minimal XFCE, it doesn't work anymore, except on CLI.
I can't even change to TTY because no keys work, except in recovery mode.
Here are some files that I collected about the keyboard settings:
XKBMODEL="pc105" XKBLAYOUT="br" XKBVARIANT="" XKBOPTIONS="" BACKSPACE="guess"
mouse_drv.so synaptics_drv.so void_drv.so
I have installed the package
xserver-xorg-input-kbd during the install, but decided remove it thinking that it was the problem. In both cases the keyboard doesn't work on XFCE.
And no, I don't use any session manager. I just automated the process of login through the systemd and the .profile.
Edit: I installed the package xserver-xorg-input-libinput and the keyboard started to work on XFCE. Case closed. =)