Hi, I bought a Waveshare 5 inch DSI touchscreen to my Raspberry Pi and it worked perfect directly out of the box. The only thing I have not managed to solve yet is to get the dimming to work to conserve energy when the screen is not in use. I have downloaded the RpiDisplaySetup but it will not install. According to the instruction I need to install from the command-line but that's where I'm stuck. How do I manage to install the package then? Any other tips to manage the dimming / standby mode of the Waveshare screen?