waydabber / m1ddc

This little tool controls external displays (connected via USB-C/DisplayPort Alt Mode) using DDC/CI on Apple Silicon Macs. Useful to embed in various scripts.

Repository from Github https://github.comwaydabber/m1ddcRepository from Github https://github.comwaydabber/m1ddc

Won't change input on LG 32UN880-B

pierloui opened this issue · comments

Hello,

I can change luminance, but when trying to switch input, the screen goes black for 1 second, and it does nothing.

Any idea on what to do?

Thx
Pierre-Louis

Hi, input control might not be supported by all displays, it is dependent on the display firmware. I have an LG 27UD88 and was not actually change input properly (via USB-C), it just blanks my display and have to restart it.

Ok, that's not true, I seem to be able to change to HDMI1 or HDMI2, but no to DisplayPort. My display does not seem to use the standard values for inputs. You might want to experiment with various values for the input command. It is probably obvious by now that didn't really experiment with changing inputs that much. I will though since I want to implement this functionality into MonitorControl.

Same issue here with my LG 32UN880, tried all the input values from 1 to 30 and it just flashed to black and back to the USB-C input.

Please try my patch at #32. It works for my UN880, but I'd like some feedback from others as well. Note that you'll need to use the input-alt command.