Suspend/resume stopped working after 0.8.8.1 package installed, reverting to 0.8.8 solved my problem.

Suspend/resume stopped working after 0.8.8.1 package installed,
Every time I closed and reopen the laptop lid the system rebooted.

Reverting to package version 0.8.8 solved my problem.

I have a Dell XPS 15 9550.

Kernel info below.

$ uname -a
Linux rafxps15 4.18.13-041813-generic #201810100332 SMP Wed Oct 10 07:34:55 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

$ lsb_release -rd
Description: Ubuntu 18.04.1 LTS
Release: 18.04

$ apt-cache policy nvidia-prime
nvidia-prime:
  Installed: 0.8.8
  Candidate: 0.8.8.1
  Version table:
     0.8.8.1 500
        500 http://au.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
        500 http://au.archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages
 *** 0.8.8 500
        500 http://au.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
        500 http://au.archive.ubuntu.com/ubuntu bionic/main i386 Packages
        100 /var/lib/dpkg/status
rafael@rafxps15:~$