Here is a screenshot from yesterday showing the errors with DolphinEmu and mGBA:
Same as retroarch they tried to open and then closed.
Now, they work just fine, but retroarch is still not working.
I think it tries to use radeonsi while it should use instead the amdgpu one (amdgpusi ?) The SI comes from SouternIslands, which refers to some GPUs, including my HD7770.
Best regards