I have a roccat Kone+ mouse and a roccat ISKU | FX Multicolor gaming keyboard both of which have been fully supported in the past. Suddenly they no longer function. Right now, I'm using an old keyboard and mouse from my "parts closet". Suspect some kind of problematic update. Note that other devices work in these ports. Notably a Logitech Orbit camera. I've rebooted and reinstalled the roccat-tools package and so far have not discovered any solution. I've dumped the results of lsusb -v for 2 situations to file. One for when the keyboard is partially functioning on USB 1.0 ports and the other for the case when it doesn't work at all on USB 2/3 ports.
[Edit] By now, I know that it's strictly a USB issue and not a keyboard or mouse issue. If I reboot the machine, it takes some time after the login screen shows up for the keyboard to work, when it does. I'm now testing with a standard keyboard and mouse. I've tried downloading new USB Ids, but IDK if that even matters. It seems to me that it may be related to this issue.