Dear All,
I have read as much as possible, but I cannot solve my problems. I have recently upgraded my two raspberry PIs 4 from Libreelec 11 to 12. I have the same problem with both:
1) the resolution is set to 1024x768 and I cannot select 1920x1080, which is supported by both TVs (one is a very old samsung, the second one a much newer google tv from Sony, which is a 2k panel). I am sure it is not an hardware problem, like other people had, because it was working before. On the old tv I could even see Kodi as a choice of source to watch, now I have to select the correct HDMI input. I have also upgraded to the latest firmware of the board, but it did not change anything.
2) then, both don't let me switch off the tv. I switch it off, and it switches itself on again. I tried a few solutions I found online, but nothing seems to work.
I am not sure what else I can provide here, but, if anybody who can help needs more information, please ask.
Regards
Aldo