Ok, ignore the "dmesg" stuff, operator error. To be sure I am on Bullseye up to date. The problem is that vc4-drm see's EDID data as checksum is invalid, remainder is 134. All methods to display EDID point to empty folders or files. I researched "tvservice" and found out that as of October 2023 it is no longer part of Bullseye so I "sudo apt install libraspberrypi-bin" but can not find "tvservice". If I could retrieve the EDID data from the display card then use custom.edid in config.txt , that would solve the problem.
Statistics: Posted by CJeU — Sun Apr 07, 2024 7:05 pm