To be able to use an Apple keyboard (MB110D/A) on a linux system,
the correct layout must be set first. Select the corresponding in the
Keyboard Preferences. In this case
Germany Macintosh is added to the layouts list.
Keyboard model should be
Apple.
Unfortunately, the keys [^/°] and
[] remain
reversed. To fix this the key codes have the be reassigned:
1) Find out the keycode
With help of the programm
xev the keycode can be figured out. Start the programm as follows and press the keys [^/°] and [] afterwards. The keycodes should be displayed.
$ xev | grep keycode
state 0x10, keycode 94 (keysym 0xfe52, dead_circumflex), same_screen YES,
state 0x10, keycode 94 (keysym 0xfe52, dead_circumflex), same_screen YES,
state 0x10, keycode 49 (keysym 0x3c, less), same_screen YES,
state 0x10, keycode 49 (keysym 0x3c, less), same_screen YES,
So we need to fix the assignment for the keycodes 94 and 49.
2) Show current key assignment
The current key assignment can be displayed using
xmodmap.
$ xmodmap -pke | grep " 94"
keycode 94 = less greater less greater bar brokenbar bar
$ xmodmap -pke | grep " 49"
keycode 49 = dead_circumflex degree dead_circumflex degree U2032 U2033 U2032
Here you can already see the problem. On the button [^ / °] with keycode 94 are the signs for smaller, bigger, ...
3) Change key assignment
With
xmodmap the key assignement can be changed.
$ xmodmap -e 'keycode 49 = less greater less greater bar brokenbar bar'
$ xmodmap -e 'keycode 94 = dead_circumflex degree dead_circumflex degree U2032 U2033 U2032'
However, this change only lasts until the next reboot. In order to implement this change permanent or restore after a reboot, the new assignments must be stored in the file ~/.Xmodmap.
$ xmodmap -pke | grep " 49" >> ~/.Xmodmap
$ xmodmap -pke | grep " 94" >> ~/.Xmodmap
The file should look like this now:
keycode 94 = dead_circumflex degree dead_circumflex degree U2032 U2033 U2032
keycode 49 = less greater less greater bar brokenbar bar
