In case somebody would debug this problem again, here is answer to my question from Jean-Louis back in 2015:
AT Translated Set 2 keyboard reports these events: left button: EV_MSC MSC_SCAN 219 EV_KEY KEY_LEFTMETA (0x7d) pressed EV_SYN code=0 value=0 EV_MSC MSC_SCAN 45 EV_KEY KEY_X (0x2d) pressed EV_SYN code=0 value=0 EV_MSC MSC_SCAN 45 EV_KEY KEY_X (0x2d) released EV_SYN code=0 value=0 EV_MSC MSC_SCAN 219 EV_KEY KEY_LEFTMETA (0x7d) released EV_SYN code=0 value=0 middle button: EV_MSC MSC_SCAN 133 EV_KEY KEY_BRIGHTNESSDOWN (0xe0) pressed EV_SYN code=0 value=0 EV_MSC MSC_SCAN 133 EV_KEY KEY_BRIGHTNESSDOWN (0xe0) released EV_SYN code=0 value=0 right button: EV_MSC MSC_SCAN 132 EV_KEY KEY_NEXTSONG (0xa3) pressed EV_SYN code=0 value=0 EV_MSC MSC_SCAN 132 EV_KEY KEY_NEXTSONG (0xa3) released EV_SYN code=0 value=0 So left button generates combination META+X, middle button is reported as brightness down and right button as next song. So keys are reported via PS/2 keyboard and also by WMI. Dell WMI events are ignored by kernel to prevent duplication. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/815914 Title: dell_wmi: Unknown key eXXX pressed To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/815914/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
