joinski My system is x86-64bit. Afer upgrading from 5.26 I had black screen with Quadro K2000 :( I removed it and Batocera booted without problem on integrated Intel HD Graphics 510. Of course tried everything like erasing existing configuration, so it has to be some incompatibility (NVidia drivers?) in RC1.
My system:
Intel G4400 2.9GHz
Asus h110i Motherboard
Intel HD Graphics 510
8GB DDR4
180GB Intel SSD
8TB Seagate external HDD
LG OLED55B7V (amazing CRT Tube-like experience after forcing 120Hz refresh rate)
Batocera 5.26 worked like a dream with both Quadro K2000 and integrated Intel GPU.
5.27-RC1 also hanged 2-3 times on kernel level on game list and during gameplay (had to power cycle the system). Have no idea if this is only specific to my setup, no one reported something like that so far.