Well, firstly 'udevadm trigger' also does not work. I really have to physically reconnect or unbind and rebind via sysfs to get the mapping working. Just for the record.
As for your other question: It's a relatively normal system - Intel Core i5-4570 (Haswell) - 8 GB RAM - Asrock H87 Pro4 (Intel H87 chipset) - Kubuntu 14.04 (currently running kernel 3.13.0-34-generic) - System is installed on a Crucial M500 SSD - My rootfs is a simple ext4 (no overlays that I'm aware of), /boot is an ext2 and /home an ext4 on another (larger) hard disk - I boot in the old BIOS mode and do *not* use UEFI boot I also tried it with Xubuntu 14.04 in a VirtualBox system with the USB device passed through. Same effect. The keyboard in question is usually connected to a 10-Port USB-Hub from Logilink. But if I connect it directly to the USB port at the mainboard's back side or even an additional Renesas USB3 controller card, nothing changes. I do not see any new entries in the syslog after the 'udevadm hwdb --update' command. Not sure if I'm supposed to, though. During my research, I found some links where other people seem to have similar problems: http://askubuntu.com/questions/471802/where-has-lib-udev-keymap-gone-how-do-i-adjust-keymaps-in-trusty http://marcin.juszkiewicz.com.pl/2014/03/03/how-to-get-zoom-slider-on-microsoft-keyboard-recognized-by-x11/ http://forums.fedoraforum.org/showpost.php?p=1681790&postcount=3 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1361338 Title: Custom keymap in hwdb not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/udev/+bug/1361338/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
