diff --git a/install.sh b/install.sh
index cf0b081..91c289a 100755
--- a/install.sh
+++ b/install.sh
@@ -31,7 +31,7 @@ cd "$SCRIPT_DIR"
 
 if [ "$1" = "--uninstall" ]; then
     echo -e "${CYAN}${BOLD}Uninstalling Linux Hello...${NC}"
-    sudo sed -i '/pam_linux_hello/d' /etc/pam.d/gdm-password 2>/dev/null || true
+    sudo sed -i '/pam_linux_hello/d' /etc/pam.d/gdm-password /etc/pam.d/sddm /etc/pam.d/lightdm 2>/dev/null || true
     sudo systemctl disable --now linux-hello.service 2>/dev/null || true
     sudo rm -f /usr/libexec/linux-hello-daemon /usr/local/bin/linux-hello
     sudo rm -f /lib/x86_64-linux-gnu/security/pam_linux_hello.so /lib/security/pam_linux_hello.so
@@ -186,9 +186,37 @@ sudo ORT_DYLIB_PATH=/usr/local/lib/linux-hello/libonnxruntime.so linux-hello enr
 
 # ─── PAM Integration ─────────────────────────────────────────────────────────
 
-# Add face auth to GDM (if not already there)
-if ! grep -q "pam_linux_hello" /etc/pam.d/gdm-password 2>/dev/null; then
-    sudo sed -i '/@include common-auth/i auth    sufficient      pam_linux_hello.so timeout=5' /etc/pam.d/gdm-password
+# Detect display manager and configure PAM accordingly
+DM_NAME=""
+PAM_CONFIGURED=false
+
+if systemctl is-active --quiet gdm.service 2>/dev/null || systemctl is-active --quiet gdm3.service 2>/dev/null; then
+    DM_NAME="GDM"
+    PAM_FILE="/etc/pam.d/gdm-password"
+    if [ -f "$PAM_FILE" ] && ! grep -q "pam_linux_hello" "$PAM_FILE"; then
+        sudo sed -i '/@include common-auth/i auth    sufficient      pam_linux_hello.so timeout=5' "$PAM_FILE"
+        PAM_CONFIGURED=true
+    elif grep -q "pam_linux_hello" "$PAM_FILE" 2>/dev/null; then
+        PAM_CONFIGURED=true
+    fi
+elif systemctl is-active --quiet sddm.service 2>/dev/null; then
+    DM_NAME="SDDM"
+    PAM_FILE="/etc/pam.d/sddm"
+    if [ -f "$PAM_FILE" ] && ! grep -q "pam_linux_hello" "$PAM_FILE"; then
+        sudo sed -i '/auth.*include.*system-login\|auth.*include.*common-auth\|@include common-auth/i auth    sufficient      pam_linux_hello.so timeout=5' "$PAM_FILE"
+        PAM_CONFIGURED=true
+    elif grep -q "pam_linux_hello" "$PAM_FILE" 2>/dev/null; then
+        PAM_CONFIGURED=true
+    fi
+elif systemctl is-active --quiet lightdm.service 2>/dev/null; then
+    DM_NAME="LightDM"
+    PAM_FILE="/etc/pam.d/lightdm"
+    if [ -f "$PAM_FILE" ] && ! grep -q "pam_linux_hello" "$PAM_FILE"; then
+        sudo sed -i '/@include common-auth\|auth.*include.*system-login/i auth    sufficient      pam_linux_hello.so timeout=5' "$PAM_FILE"
+        PAM_CONFIGURED=true
+    elif grep -q "pam_linux_hello" "$PAM_FILE" 2>/dev/null; then
+        PAM_CONFIGURED=true
+    fi
 fi
 
 # ─── Done ─────────────────────────────────────────────────────────────────────
@@ -198,8 +226,21 @@ echo -e "${GREEN}${BOLD}  ╔═════════════════
 echo "  ║      Installation complete!       ║"
 echo "  ╚═══════════════════════════════════╝${NC}"
 echo ""
-echo "  Lock your screen and look at the camera to unlock."
-echo "  Your password always works as a fallback."
+
+if [ "$PAM_CONFIGURED" = true ]; then
+    echo "  Lock your screen and look at the camera to unlock."
+    echo "  Your password always works as a fallback."
+    echo "  Display manager: $DM_NAME ($PAM_FILE)"
+elif [ -n "$DM_NAME" ]; then
+    echo -e "  ${YELLOW}Could not configure $DM_NAME automatically.${NC}"
+    echo "  Add this line to $PAM_FILE before the auth include:"
+    echo "    auth    sufficient      pam_linux_hello.so timeout=5"
+else
+    echo -e "  ${YELLOW}No supported display manager detected (GDM, SDDM, LightDM).${NC}"
+    echo "  To enable face unlock, add this line to your display manager's PAM config:"
+    echo "    auth    sufficient      pam_linux_hello.so timeout=5"
+fi
+
 echo ""
 echo "  Commands:"
 echo "    linux-hello test       — test face recognition"