Oneself use lenovo Z500 (showing) installed Windows 7 + RHEL7.3 double system, but RHEL7.3 unable to adjust the screen brightness, adjust the up and don't respond, according to the tutorial in the BBS, modify the brightness file, also was not used, install NVIDIA graphics driver, also was not used, moreover, under the/sys/class/backlight/file only a Intel_brightness file, no file etho_0, experienced great god guidance;

CodePudding user response:

The screen dark, looks very difficult,

CodePudding user response:

according to win graphics drivers seem is showing no drive,