med@sorceress:~ 0> uname -av
Linux sorceress 4.18.5med+ #1 SMP Tue Sep 4 17:42:26 CEST 2018 x86_64 x86_64
x86_64 GNU/Linux

So far, so good. I booted with these kernel options: 

resume=/dev/mapper/fedora_linux-swap rd.lvm.lv=fedora_linux/root
rd.luks.uuid=luks-deadfb82-77b2-4047-89d9-ea0ba6f38d03
rd.lvm.lv=fedora_linux/swap rhgb quiet uvcvideo.quirks=0x100 scsi_mod.scan=sync

And suspend appears to work. I'll keep testing this for a couple of days. If
you want me to try something specific, I'd be glad to do so.