I also have the same issue with Dell XPS 13 9310 when using the 5.13.0-21 kernel. I can confirm that 5.13.0-20 kernel works on this XPS 13 9310 with a full power cycle.
I also have the same issue with Dell XPS 13 9310 when using the 5.13.0-21 kernel. I can confirm that 5.13.0-20 kernel works on this XPS 13 9310 with a full power cycle.