LightDM fails to start on Linux-lts 4.1.12-1

[Chris]

When booting up in Arch on the Linux-lts 4.1.12-1 kernel LightDM 1:1.16.4-1 fails to start. The system just hangs after that. Here's the boot.log from journalctl on a failed boot: http://pastebin.com/X0X4hT8T
Linux 4.2.5-1 boots up without a hitch. I'm using the antergos 2.2.3-1 theme.

The rEFInd entries are:
menuentry "Arch"{
 icon \EFI\refind\icons\os_arch.png
 volume BOOT
 loader vmlinuz-linux
 initrd initramfs-linux.img
 options "rw root=UUID=88264de8-5ef0-405c-bac1-8ecba0a47aca intitrd=intel-ucode.img quiet ipv6.disable=1 rootflags=noatime,data=ordered elevator=noop vga=0x034d"
}

menuentry "Arch lts"{
 icon \EFI\refind\icons\os_arch.png
 volume BOOT
 loader vmlinuz-linux-lts
 initrd initramfs-linux-lts.img
 options "rw root=UUID=88264de8-5ef0-405c-bac1-8ecba0a47aca intitrd=intel-ucode.img quiet ipv6.disable=1 rootflags=noatime,data=ordered elevator=noop"
}