From dde39a91e35697f1bf72b3b709981b882eaea8a0 Mon Sep 17 00:00:00 2001
From: Vishal Rao <vishalrao@gmail.com>
Date: Sat, 4 Jul 2026 22:19:23 +0530
Subject: [PATCH 1/3] Fast loop fprint auth

---
 src/MainWindow.vala | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/src/MainWindow.vala b/src/MainWindow.vala
index 616ae938..09cb4265 100644
--- a/src/MainWindow.vala
+++ b/src/MainWindow.vala
@@ -18,6 +18,8 @@ public class Greeter.MainWindow : Gtk.ApplicationWindow {
     private Greeter.DateTimeWidget datetime_widget;
     private unowned LightDM.UserList lightdm_user_list;
 
+    private string? saved_credential = null;
+
     private int current_user_card_index = -1;
     private unowned Greeter.BaseCard? current_card = null;
 
@@ -270,15 +272,24 @@ public class Greeter.MainWindow : Gtk.ApplicationWindow {
             case Greeter.FPrintUtils.MessageText.FPRINT_TIMEOUT:
             case Greeter.FPrintUtils.MessageText.FPRINT_ERROR:
             case Greeter.FPrintUtils.MessageText.OTHER:
-                current_card.use_fingerprint = false;
                 break;
             default:
                 current_card.use_fingerprint = true;
+                saved_credential = null;
                 break;
         }
     }
 
     private void show_prompt (string text, LightDM.PromptType type = LightDM.PromptType.QUESTION) {
+        if (saved_credential != null) {
+            try {
+                lightdm_greeter.respond (saved_credential);
+            } catch (Error e) {
+                critical (e.message);
+            }
+        } else {
+            do_connect_username (((UserCard) current_card).lightdm_user.name);
+        }
         if (current_card is ManualCard) {
             if (type == LightDM.PromptType.SECRET) {
                 ((ManualCard) current_card).ask_password ();
@@ -492,14 +503,7 @@ public class Greeter.MainWindow : Gtk.ApplicationWindow {
     }
 
     private void do_connect (string? credential) {
-        if (credential != null) {
-            try {
-                lightdm_greeter.respond (credential);
-            } catch (Error e) {
-                critical (e.message);
-            }
-        }
-
+        saved_credential = credential;
         carousel.interactive = false;
         carousel.scroll_to (current_card);
     }

From 95c2e8b54843369c7af9a50a018241ccfb75aa11 Mon Sep 17 00:00:00 2001
From: Vishal Rao <vishalrao@gmail.com>
Date: Sun, 5 Jul 2026 16:42:13 +0530
Subject: [PATCH 2/3] Don't deadcode manual card login

---
 src/MainWindow.vala | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/src/MainWindow.vala b/src/MainWindow.vala
index 09cb4265..7de2acd0 100644
--- a/src/MainWindow.vala
+++ b/src/MainWindow.vala
@@ -281,6 +281,14 @@ public class Greeter.MainWindow : Gtk.ApplicationWindow {
     }
 
     private void show_prompt (string text, LightDM.PromptType type = LightDM.PromptType.QUESTION) {
+        if (current_card is ManualCard) {
+            if (type == LightDM.PromptType.SECRET) {
+                ((ManualCard) current_card).ask_password ();
+            } else {
+                ((ManualCard) current_card).wrong_username ();
+            }
+        }
+
         if (saved_credential != null) {
             try {
                 lightdm_greeter.respond (saved_credential);
@@ -290,13 +298,6 @@ public class Greeter.MainWindow : Gtk.ApplicationWindow {
         } else {
             do_connect_username (((UserCard) current_card).lightdm_user.name);
         }
-        if (current_card is ManualCard) {
-            if (type == LightDM.PromptType.SECRET) {
-                ((ManualCard) current_card).ask_password ();
-            } else {
-                ((ManualCard) current_card).wrong_username ();
-            }
-        }
     }
 
     // Called after the credentials are checked, might be authenticated or not.

From 41b79dc361be8ca6e2955a2ab1140cd7dc6b9e99 Mon Sep 17 00:00:00 2001
From: Vishal Rao <vishalrao@gmail.com>
Date: Sun, 5 Jul 2026 16:46:26 +0530
Subject: [PATCH 3/3] Break wrong-passwd auth loop for non-fprint users

---
 src/MainWindow.vala | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/MainWindow.vala b/src/MainWindow.vala
index 7de2acd0..4204fe3b 100644
--- a/src/MainWindow.vala
+++ b/src/MainWindow.vala
@@ -340,6 +340,8 @@ public class Greeter.MainWindow : Gtk.ApplicationWindow {
             }
         }
 
+        saved_credential = null;
+
         if (user_card != null) {
             try {
                 lightdm_greeter.authenticate (user_card.lightdm_user.name);