I reinstalled 5.13.0-1003.
I was able to add the PPA, install 5.13.0-1005 and it boots.
I don't know what is different between installing 5.13.0-1005 directly and the method in comment #3.
I reinstalled 5.13.0-1003.
I was able to add the PPA, install 5.13.0-1005 and it boots.
I don't know what is different between installing 5.13.0-1005 directly and the method in comment #3.