It turns out that the answer was right in front of me (well, after some research). Something had added a zram swap device. Because of there being two swap devices, the kernel wasn't properly able to hibernate. I removed the zram swap device, and now I am able to hibernate properly.
It turns out that the answer was right in front of me (well, after some research). Something had added a zram swap device. Because of there being two swap devices, the kernel wasn't properly able to hibernate. I removed the zram swap device, and now I am able to hibernate properly.