Hi, On 8/18/21 5:01 PM, Barnabás Pőcze wrote: > Hi > > > 2021. augusztus 18., szerda 15:36 keltezéssel, Matan Ziv-Av írta: >> [...] >>> If this hotkey changes the kbd-backlight level "in hardware" >>> then it should not send a key-press instead you should specify >>> >>> led_classdev.flags = LED_BRIGHT_HW_CHANGED >>> >>> For the kbd-backlight led_classdev and then call: >>> >>> led_classdev_notify_brightness_hw_changed(&kbd_backlight, new_backlight_level); >>> >>> When receiving the event. upower will pick the event send by this up >>> and then notify interested parties such as e.g. gnome-settings-daemon >>> which will then show a nice OSD with the new backlight level similar >>> to how it is done for e.g. volume controls. >>> >>> >>> If you can also send patches to change these 2 things, so that lg-laptop >>> conforms with the standard userspace APIs used for this that would be great. >> >> I sent patches for this (in a separate thread). But in my testing, this >> does not happen automatically and I did not find yet how to configure >> udev/upower/kde to display this notification. >> > > You can check the events by running something like: > > dbus-monitor --system "type='signal',interface='org.freedesktop.UPower.KbdBacklight',member='BrightnessChanged'" Right, one important remark though, for some reason when the brightness_hw_changed API was added to the LED subsystem it was decided to make this a Kconfig option, so in order for this to work you must also make sure to have: CONFIG_LEDS_BRIGHTNESS_HW_CHANGED=y in your .config . Regards, Hans
