Neben meiner Tastatur habe ich einen zusätzlichen USB-Ziffernblock (als einfache Stream Deck Alternative), den ich gerne als programmierbare Tasten unter Ubuntu Linux verwenden möchte.
Linux
I bought a Cherry G84-4700PUCDE-2 keypad about three years ago to have some "special multimedia keys" on the left side of my keyboard. It used to work after some trying until I upgraded to Ubuntu 14.04. The "trusty" release removed support for /lib/udev/findkeys and /lib/udev/keymap and replaced both by something called "hwdb". Converting turned out to be hard, because there are many wrong hints out there spread over the internet.
I'm currently upgrading from Ubuntu 9.04 to Ubuntu 12.04, a long process as every upgrade does only one step. This is the price you pay for skipping all updates of the last years. It's even slower since I moved my root filesystem to a RAID6.
I'm running a small server at home which does storage services, telephone and MythTV in one box. The VoIP part is served by Asterisk (what else?) and a AVM FritzCard PCI.