[solved] keycodes with more than 8bits

Hey,
I got a Logitech Presenter and I try to get it work. The 'page up/down' buttons are correctly mapped but the other two buttons don't seem to work.
I seek out the following information:
- pressing the buttons doesn't generate a key event in gnome (I used 'xev' )
- pressing the buttons generates key events in tty with key codes 425 and 431  (I used showkey)
- executing 'xmodmap -pke' in gnome shows a list of all keycodes up to 255 - it seems that only 8 bit keycodes are handled
What can I do to get keycode 425 in gnome?
I use gnome 3.10.1 with linux 3.12.5.
Thanks for your help.
Samuel
Last edited by smohr (2014-01-14 23:19:50)

I have solved my problem with a workaround.
I map all the five scancodes to keycodes less than 255:
# Logitech Presenter R400
keyboard:usb:v046DpC52Dd*dc*dsc*dp*ic*isc*ip*in00*
KEYBOARD_KEY_070029=wimax
KEYBOARD_KEY_07003e=rfkill
KEYBOARD_KEY_070037=display_off
KEYBOARD_KEY_07004b=video_prev
KEYBOARD_KEY_07004e=video_next
Unfortunately, I did not get how to use keycodes instead of definitions there.
These keycodes are mapped with Xmodmap:
keycode 250 = Prior NoSymbol Prior NoSymbol Prior
keycode 249 = Next NoSymbol Next NoSymbol Next
keycode 254 = F5 F5 F5 F5 F5
keycode 255 = Escape NoSymbol Escape NoSymbol Escape
keycode 253 = period colon period greater U2026

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