Here's the latest thing I've been working on.
The 'Generic HID' doesn't work well with the G-Keys of these Logitech Gaming Keyboards, so I made a plugin that can handle these devices.
I have tested it on my G11. So it should also work with the old G15 which is essentially the same device just with an added display.
If the newer G15 refresh works I have no idea. As it has less g-buttons, it might also have a slightly different button encoding.
I however haven't found any sign of differences between the two devices in the Linux-driver that would prove this yet, so it might be worth a try
I have based this plugin on the Generic HID - plugin done by Bartman. I hope that's ok for you.
So already thanks to you, you surely saved me many hours
Ele