[RPi5] PINN * LibreELEC 11 * RecalBox

Hello.
I'm trying to run an RPi5 from an M.2 NVME running PINN for now. I want (as always) to run LibreElec alongside RecalBox, preferably LibreElec 11 because I had trouble with the 12 version on the RPi400 and because it runs on all my other RPi's and they work fine with it.
After installing both operating systems and booting one of them, the screen stays off on LE11 but everything works fine on RecalBox. If i do it with LE12 i get a picture, but unfortunately there is the mesa problem where I can't see any menus or text. Can anyone tell me what's wrong with LE11 and how I can get the whole thing to work?

Quote from HarryH

It appears that you have a 2712D0 hardware revision, so you need to install LE 12.0.2 or LE13. Apart from some nightlies, the required Mesa version you need for your RPi5 was not included before LE 12.0.2. This will fix the graphical issues.

Ok, i would have tried that next, but then i can't use the advantages of PINN and install RecalBox in parallel. Or can i update LE12 somehow without having set it up?
I would be much more interested to know why LE11 is not running. Could this also be related to the hardware revision?

yezzzz.

thank you very much, that helped. best man this sunday