diff --git a/mkosi.extra/usr/lib/systemd/system-preset/50-systemdos.preset b/mkosi.extra/usr/lib/systemd/system-preset/50-systemdos.preset
index 0f612fc..47cdb84 100644
--- a/mkosi.extra/usr/lib/systemd/system-preset/50-systemdos.preset
+++ b/mkosi.extra/usr/lib/systemd/system-preset/50-systemdos.preset
@@ -8,6 +8,7 @@ enable snapd.socket
 enable snapd.apparmor.service
 enable apparmor.service
 enable systemd-oomd.service
+enable bluetooth.service
 
 enable live-user.service
 enable plasma-setup-live-system.service
diff --git a/mkosi.postinst.chroot b/mkosi.postinst.chroot
index 712c72f..ea715df 100755
--- a/mkosi.postinst.chroot
+++ b/mkosi.postinst.chroot
@@ -42,6 +42,8 @@ pacman --sync --noconfirm cups cups-browsed
 pacman --sync --noconfirm opencv
 # For fingerprint login
 pacman --sync --noconfirm fprintd
+# For DDC/CI external monitors brightness; https://wiki.archlinux.org/title/backlight
+pacman --sync --noconfirm ddcutil
 
 # YAY Builder
 # https://preciselab.io/how-to-install-yay-on-pure-archlinux-image/