It would be good to hear from anyone else running this on their PinePhone.
As mentioned above, on my PinePhone the latest image only outputs to an external monitor. We've not gotten to the bottom of this issue yet because @mara doesn't have a PinePhone to test it on and unfortunately I'm incredibly short of time and knowledge to fully diagnose it.
If any PinePhone user with more experience of kernels and u-boot wants to lend a hand it would certainly speed things up. Swapping in a different kernel and / or device tree may solve it.
Update: As a temporary workaround, the image boots on the PinePhone's screen after installing Megi's 5.16 kernel.
As mentioned above, on my PinePhone the latest image only outputs to an external monitor. We've not gotten to the bottom of this issue yet because @mara doesn't have a PinePhone to test it on and unfortunately I'm incredibly short of time and knowledge to fully diagnose it.
If any PinePhone user with more experience of kernels and u-boot wants to lend a hand it would certainly speed things up. Swapping in a different kernel and / or device tree may solve it.
Update: As a temporary workaround, the image boots on the PinePhone's screen after installing Megi's 5.16 kernel.