One more specific information : in bare OpenBox X session, none of these keys have a visible effect handled by Ubuntu, except XF86WLAN.
Also, this laptop was sold with Windows, and there all function keys work, including the brightness keys. ## kernel-level showkey test I've tried https://wiki.ubuntu.com/Hotkeys/Troubleshooting but it seems outdated. No gconf-editor, used dconf-editor instead. Tree paths do not exist, /usr/share/doc/udev/README.keymap.txt does not exist. Anyway, following https://wiki.ubuntu.com/Hotkeys/Architecture I tested showkey. Fn-* combinations produced scancodes, except for the 3 malfunctioning brightness key combinations. ## acpi-level test Killing acpid would see it respawned immediately, so I moved the executable away for test. Suspend button yields acpi events, but not brightness buttons. $ sudo cat /proc/acpi/event button/sleep SLPB 00000080 0000000a battery BAT0 00000081 00000001 ac_adapter AC0 00000080 00000001 button/power PWRB 00000080 00000001 ## Now what ? This suggests that the problem should be fixed at kernel level, but it looks like kernel is never aware about those keypresses. https://wiki.ubuntu.com/Hotkeys/Troubleshooting says : > if there is neither an ACPI event nor an input event, this is probably also a kernel bug, though probably harder to diagnose (WMI, perhaps?) I'm clueless now. Thank you for any hint. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-input-evdev in Ubuntu. https://bugs.launchpad.net/bugs/1042359 Title: Partially broken brightness hotkey handling. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-evdev/+bug/1042359/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
