Custom kernel won't boot via rEFInd: black screen and "device [...] not found" errors

I am trying to get my acs-patched Antergos kernel to boot from rEFInd. It was detected automatically by rEFInd but it did not boot properly. I kept on getting ERROR: device 'UUID=...' not found. Skipping fsck., so to bypass this, and have the kernel parameters, I tried a custom menuentry, which fails. No information at all, only a black screen. Additionally, I would like to get the rEFInd-minimal theme working. Normal Antergos boots perfectly fine, after I manually select it from rEFInd submenu and XUbuntu still works fine. A note about the theme, the custom Antergos icon works, but the banner does not, nor overriding icons for XUbuntu or normal Antergos. rEFInd is setup on a separate partition like so: **/dev/sda**: | EFI BOOT | Empty Partition | SWAP | XUbuntu | Antergos | Free Space | | 1.0 GB | 1.0 GB | 8.6 GB | 21 GB | 40 GB | 185 GB | **EFI BOOT**: . └── EFI ├── BOOT │   ├── bootx64.efi │   ├── drivers_x64 │   ├── icons │   ├── keys │   └── refind.conf ├── refind │   ├── rEFInd-minimal │   └── refind-theme-regular └── tools **refind.conf**: timeout 20 menuentry "Antergos IOMMU" { icon EFI/refind/rEFInd-minimal/icons/os_antergos.png volume Antergos loader /boot/vmlinuz-linux-vfio initrd /boot/initramfs-linux-vfio.img options "root=/dev/sda5 rw quiet iommu=pt amd_iommu=on" } hideui singleuser,hints,arrows,badges icons_dir EFI/refind/rEFInd-minimal/icons banner EFI/refind/rEFInd-minimal/background.png banner_scale fillscreen selection_big EFI/refind/rEFInd-minimal/selection_big.png selection_small EFI/refind/rEFInd-minimal/selection_small.png showtools shutdown ***/dev/sda5*/boot/**: . ├── grub │   ├── fonts │   ├── grub.cfg │   ├── grub.cfg.example │   ├── grubenv │   ├── i386-pc │   ├── locale │   └── themes ├── initramfs-linux-fallback.img ├── initramfs-linux.img ├── initramfs-linux-vfio-fallback.img ├── initramfs-linux-vfio.img ├── intel-ucode.img ├── vmlinuz-linux └── vmlinuz-linux-vfio