The first time I installed the chromebook ec driver (and the other drivers) , I can turn on/off the backlight or its brightness. But, I find after rebooting, I can’t control the turning on/off the backlight or its brightness by keyboard shortcuts anymore. By using the Chrultrabook-Tools APP, I can only try to change its brightness and it may not work .Actually, the backlight even start twinking just now.I tried to uninstall Chrultrabook-Tools , the ec driver and the backlight driver in the device emanager, and reinstall the ec driver. But the problem continue after reboot.So, What should I do?My OS is Windows 11 24H2 LTSC (26100.7623)