Closed Krischan closed 3 years ago
This issue seems to be specific to this LG monitor (or LG in general). It may have to do with aggressive energy saving mode switching.
Seems like LG is particularly problematic with switching: https://github.com/rockowitz/ddcutil/issues/100
Reporting to document and for completeness sake as this appears to be an issue with the DP-HDMI adapter.
The programmatic display input switch works when the input is still the same. However, after a manual switch to another input switching back no longer works. The I2C signal no longer gets through causing an I2C error which gets logged.
Case 1 - toggling the USB switch while input is already set to HDMI (0x11) (PC), i.e. setting to active input.
Case 2 - toggling USB switch when input is set to DisplayPort (Mac)