Past few days, I see some troubles about special characters on my Dell Latitude Laptop.
I was unable to use every thinks like @, |, é, è or à.
It’s an hardware trouble ? xev tel me “no”. But I see my “Alt Gr” produce “Compose” instead “Alt_R”.
I try some keyboard, console and locales reconfiguration using dpkg-reconfigure without result.
I go to the KDE System Settings -> Input Devices -> Keyboard -> Advanced -> Configure keyboard options, I see Position of Compose Key is checked, I look forward and I see “Right Alt” is checked. I change to “3rd level of left win” and Apply.
Now my keyboard is working fine.