DisplayPort Alt Mode not working
Summary
External display is not detected after being connected via cable.
The problem
Steps to reproduce
Connect external display to Samsung S8 using either
- usb-c hub with HDMI out OR
- usb-c to usb-c direct cable
What is the current behavior?
External display is not detected -> stays black.
What is the expected correct behavior?
External display is detected and phone screen is mirrored.
Technical informations
Tested on v0.12-2020093076095.
- Test failed with usb-c cable connected to NexDock
- Test failed with Trust 21260 usb-c hub.
Both scenarios are working fine with Samsung S9+ with stock Android Pie.
Relevant screenshots
Nothing to be captured.
Solutions
Workaround
No workaround found.
Possible fixes
No idea.