So I deleted the contents of batocera partition and manually copied the contents of boot.xar to the partition and enabled nvidia driver and I'm greeted again with a black screen blinking cursor.
I have the output of dmesg like you asked but it's way too big to paste here, so I uploaded it, please take a look:
http://s000.tinyupload.com/?file_id=17125765525935479424
Also if I try to run emulationstation manually from ssh here's what I get:
lvl0: Error initializing SDL!
No available video device
lvl0: Renderer failed to initialize!
lvl0: Window failed to initialize!
If I disable nvidia driver, same issue.
With the "official" download, enabling orr disabing the nvidia driver same thing, black screen.
This sucks balls, the only image that runs on my computer correctly is 5.21, I really don't get it. If only the normal update worked.
Updating from 5.20 to 5.21, no issues whatsoever.
5.21 to 5.22, "not enough disk space" pain in the ass.