Over the past couple of Tumbleweed kernel upgrades (most recently
kernel-default-4.3.0-6.1.g6b3b033), I've noticed that resumes succeed
sometimes, and that if a resume fails, another one or two suspend/resume cycles
will result in a successful resume. FYI, I'm also using
ucode-amd-20151109git-35.1 and kernel-firmware-20151109git-35.1.

I have attached Xorg.0.log and the following three "dmesg -c" outputs:

  suspend1.dmesg - before any suspends
  suspend2.dmesg - after two suspends, the first of which failed
  suspend3.dmesg - after one suspend that succeeded