Well I have it booting from power on and power reset on the RockPro64. The LE Power Off and power recycle works too. Everything booting as it should and GUI displays at correct resolution with CEC. What I don’t see is the LE boot splash screen during the boot process.
The RockPro64 had two versions, rev2 and rev3. I have the rev 2. The boards were advised as LTS 2023 and beyond (take that with a pinch of salt from Pine) so it’s difficult to tell where this problem lies other than early on in the boot process and the missing LE boot splash screen could point to changes in kernel 6.x which may have exposed the issues highlighted by chewitt above.
Happily everything else is working as it should and appears very stable now. Running 24 hours now and no issues to report so far.