Gary, too bad, that looks like another bug in gnome-settings-daemon.
We already make sure that we can turn on/off the display through bl_blank in
/sys/class/backlight/eeepc-wmi
So, everything in kernel are all set.
I just check the gnome-settings-daemon code and fount in
plugins/media-keys/gsd-media-keys-manager.c +2126
case KEYBOARD_BRIGHTNESS_UP_KEY:
case KEYBOARD_BRIGHTNESS_DOWN_KEY:
case KEYBOARD_BRIGHTNESS_TOGGLE_KEY:
do_keyboard_brightness_action (manager, type);
break;
And in do_keyboard_brightness_action(), it will call
g_dbus_proxy_call (manager->priv->power_keyboard_proxy,
type == KEYBOARD_BRIGHTNESS_UP_KEY ? "StepUp" :
"StepDown",
NULL,
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
update_keyboard_cb,
manager);
You can easily find that, the brightness toggle type is gone. So that
gnome-settings-daemon will do nothing while receiving the keyevent 431(which is
KEY_DISPLAYTOGGLE).
I'll file a bug on bugzilla and link back to this bug tomorrow.
Thanks for your help.
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https://bugs.launchpad.net/bugs/1000146
Title:
[ASUS X101CH and 1015CX] the hotkey to turn on/off the display is not
working
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