This is strange, I also have it on my XPS 15 (9560), exactly the same as
described here with the same behavior: it worked on kernels before 4.15.
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
Suspend fails in Ubuntu and Kubuntu 18.04 but works fine in Ubuntu and
Kubuntu 17.10 (and on Kubuntu 18.04 using kernel 4.14.47)
To manage notifications about this bug go to:
ubuntu-bugs mailing list