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Intellij (PyCharm) does not recognize AltGr Shortcuts anymore in Linux

I have a German keyboard and I am using my Alt Gr for short cuts very heavily. Now I recently switched to a newer Linux version and all my Alt Gr stopped working. Instead of executing the command attributed to the shortcut the bound character i.e. ŋ for Alt Gr + G was shown.

Doing some research I found some long standing related bug tickets:

But none of the settings shown there fixed the shortcuts. So how to fix them?

The output of xmodmap -pke and setxkbmap -print -verbose 10 showed no difference between my old Linux (working shortcuts) and the new one.

Solution

  • The problem seemed to be related to Modifier Keys. It turned out that xmodmap -pm showed a different configuration between the two Linux.

    Fedora 22 (not working) showed

    shift       Shift_L (0x32),  Shift_R (0x3e)
lock        Caps_Lock (0x42)
control     Control_L (0x25),  Control_R (0x69)
mod1        Alt_L (0x40),  Alt_L (0xcc),  Meta_L (0xcd)
mod2        Num_Lock (0x4d)
mod3        Mode_switch (0xcb)
mod4        Super_L (0x85),  Super_R (0x86),  Super_L (0xce),  Hyper_L (0xcf)
mod5        ISO_Level3_Shift (0x5c)

    While Ubuntu (working) was returning

    shift       Shift_L (0x32),  Shift_R (0x3e)
lock        Caps_Lock (0x42)
control     Control_L (0x25),  Control_R (0x69)
mod1        Alt_L (0x40),  Alt_L (0xcc),  Meta_L (0xcd)
mod2        Num_Lock (0x4d)
mod3      
mod4        Super_L (0x85),  Super_R (0x86),  Super_L (0xce),  Hyper_L (0xcf)
mod5        ISO_Level3_Shift (0x5c),  ISO_Level3_Shift (0x6c),  Mode_switch (0xcb)

    With the help of this Archlinux Wiki article, I was able to create the following ~/.Xmodmap.

    ! First we need clear the existing mods
clear mod1
clear mod3
clear mod5
! The Mode_switch needs to be bound to a key, in order to work
! In my layout this wasn't the case, so I needed to manually do this
keycode 203 = Mode_switch NoSymbol Mode_switch
! Finally delcare the correct modifiers
add mod1 = Alt_L Meta_L
add mod5 = ISO_Level3_Shift Mode_switch

    This fixed my Alt Gr shortcuts in PyCharm, now they are recognized as expected. Settings > Keymap > Use national layouts for shortcuts is off.

    Note, I can still write special chars like ŋ in other editors and also in PyCharm as long as no shortcut is bound to it.