I have the exact same issue while running 14.04 with the Logitech Zone Touch T400 mouse.
I can remap the button using udev to another key but udev won't remap to the middle button. $ sudo udevadm --debug test-builtin keyboard /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.2/0003:046D:C52B.0030/input/input41/event6 calling: test-builtin === trie on-disk === tool version: 204 file size: 5771951 bytes header size 80 bytes strings 1271231 bytes nodes 4500640 bytes load module index device 0xa8b860 has devpath '/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.2/0003:046D:C52B.0030/input/input41/event6' device 0xa8b860 filled with db file data Error, unknown key identifier 'middle' keyboard: mapping scan code 786616 (0xc00b8) to key code 161 (0xa1) keyboard: mapping scan code 786819 (0xc0183) to key code 226 (0xe2) keyboard: mapping scan code 786820 (0xc0184) to key code 421 (0x1a5) keyboard: mapping scan code 786822 (0xc0186) to key code 423 (0x1a7) keyboard: mapping scan code 786826 (0xc018a) to key code 155 (0x9b) keyboard: mapping scan code 786830 (0xc018e) to key code 397 (0x18d) keyboard: mapping scan code 786870 (0xc01b6) to key code 212 (0xd4) keyboard: mapping scan code 786876 (0xc01bc) to key code 430 (0x1ae) keyboard: mapping scan code 786977 (0xc0221) to key code 217 (0xd9) keyboard: mapping scan code 786979 (0xc0223) to key code 172 (0xac) keyboard: mapping scan code 786989 (0xc022d) to key code 418 (0x1a2) keyboard: mapping scan code 786990 (0xc022e) to key code 419 (0x1a3) Notice the line "Error, unknown key identifier 'middle'", I get the same error no matter if I use "middle", "274" or "0x112" (as suggested above by Martin) This is a regression from the older udev (which used keymaps), which allowed specifying numeric values for the mappings. I posted here in order not to lose context but I see that the last activity in the bug is from 2013 so if I should open a new bug let me know. Thanks! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1247584 Title: [keymap] Since upgrade to Ubuntu 13.10, udev doesn't map middle mouse button. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1247584/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
