You may not be able to use your Logitech DiNovo edge keyboard correctly under Isadora due to the bluetooth application not picking up the device correctly.  This is an easy fix.   Firstly if you have one you need to plug in a standard keyboard.

Edit the file: /lib/udev/ rules.d/ 70-hid2hci. rules
Change this line:

• # Logitech devices
• KERNEL=="hiddev*", ATTRS{idVendor} =="046d" , ATTRS{idProduct }=="c70[ 345abce] |c71[34bc] ", \
• RUN+="hid2hci --method= logitech- hid --devpath=%p"

to

• KERNEL=="hidraw*", ATTRS{idVendor} =="046d" , ATTRS{idProduct }=="c70[ 345abce] |c71[34bc] ", \
• RUN+="hid2hci --method= logitech- hid --devpath=%p"

Restart the machine and it will be working correctly.