I had the same problem https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1875437
I have found several possible solutions on the web, but none of them worked for me until yesterday.
I tried adding in grub the parameter pcie_aspm=off. It is too early to confirm that the problem is solved, but the error has not appeared again since then (finger crossed).
I had the same problem https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1875437
I have found several possible solutions on the web, but none of them worked for me until yesterday.
I tried adding in grub the parameter pcie_aspm=off. It is too early to confirm that the problem is solved, but the error has not appeared again since then (finger crossed).