Hi, On Thu, 2018-05-24 at 16:33 +0800, Chris Chiu wrote: > I've made my change to set the brightness level directly in the > driver, but the > OSD doesn't show correctly correspond to the level value. The brightness shows > OK in /sys/class/led/xxxx/brighness but the OSD always shows level 0. I thought > GNOME should read the brightness from /sys before showing OSD? Sorry for the late response. There is a special mechanism to report that the HW changed the brightness. This works using the "brightness_hw_changed" sysfs attribute. So you will need to set the LED_BRIGHT_HW_CHANGED flag on the LED and then call led_classdev_notify_brightness_hw_changed to make it work. Userspace should correctly show the OSD when this is done. Benjamin
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