XFCE screen brightness level changes at every login

Hello, A little severity issue to report regarding the XFCE desktop. Every time I login to my desktop the brightness is usually too intense then I adjust it by the XFCE power settings, hoping it holds the setting, but then it reset at next reboot. Wonder if there is a configuration file to set which cannot get rewrote by XFCE settings in order to keep the last brightness level I chose. Thanks and BR, -- Marco Calistri Build: openSUSE Tumbleweed 20210106 Kernel:5.10.4-1-default Desktop: XFCE (4.14.2)