Comment 44 for bug 1970957

For me (Thinkpad Carbon X1 4th gen) I was able to fix suspend it by installing kernel 4.18, like this:

Go to https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.18/amd64/, download all four *.deb files. Then install them with "sudo dpkg -i linux*-5.18*.deb". Reboot.