I've just tried attaching it to an other TV, and it does work and displays text on the screen with that TV. The TV reports that the image coming from the OrangePiPC is 1360x768 at 60hz. So that suggests that all my attempts to change the video/display mode...
Yet upon closer inspection one finds a colophon in this manuscript actually names a dge slong Rin chen Chos kyi rgyal po as the writer, not Si tu Paṇ chen. 31. Here he does not use the more ambiguous word bris (which could either mean “write” or “paint/draw”) but rather br...