Update:
Two black screens in a row - this if I try to start Emulationstation from working ssh:
[root@BATOCERA /userdata/system]# emulationstation restart
2022-05-06 16:43:18 ERROR Error initializing SDL!
No available video device
2022-05-06 16:43:18 ERROR Renderer failed to initialize!
2022-05-06 16:43:18 ERROR Window failed to initialize!
This from Xorg.0.log
[ 14.299] (II) AMDGPU(0): glamor X acceleration enabled on AMD Radeon™ Vega 11 Graphics (RAVEN, DRM 3.42.0, 5.15.11, LLVM 13.0.0)
[ 14.299] (II) AMDGPU(0): glamor detected, initialising EGL layer.
[ 14.299] (**) AMDGPU(0): TearFree property default: on
[ 14.299] (==) AMDGPU(0): VariableRefresh: disabled
[ 14.299] (II) AMDGPU(0): KMS Pageflipping: enabled
[ 14.299] (WW) AMDGPU(0): No outputs definitely connected, trying again…
[ 14.299] (WW) AMDGPU(0): Unable to find connected outputs - setting 1024×768 initial framebuffer
[ 14.299] (II) AMDGPU(0): mem size init: gart size :bfa97000 vram size: s:3e836000 visible:3e836000
[ 14.299] (==) AMDGPU(0): DPI set to (96, 96)
[ 14.299] (==) AMDGPU(0): Using gamma correction (1.0, 1.0, 1.0)
[ 14.299] (II) Loading sub module “ramdac”
[ 14.299] (II) LoadModule: “ramdac”
[ 14.299] (II) Module “ramdac” already built-in
[ 14.299] (EE) AMDGPU(0): No modes.
[ 14.299] (II) UnloadModule: “amdgpu”
[ 14.299] (II) UnloadSubModule: “glamoregl”
[ 14.299] (II) Unloading glamoregl
[ 14.299] (II) UnloadSubModule: “fb”
[ 14.299] (II) Unloading fb
[ 14.299] (EE) Screen(s) found, but none have a usable configuration.
[ 14.299] (EE)
Fatal server error:
[ 14.299] (EE) no screens found(EE)
[ 14.299] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 14.299] (EE) Please also check the log file at “/var/log/Xorg.0.log” for additional information.
[ 14.299] (EE)
[ 14.300] (EE) Server terminated with error (1). Closing log file.