diff --git a/cloudinit/distros/raspberry_pi_os.py b/cloudinit/distros/raspberry_pi_os.py
index f1bd111acc4..5358b537225 100644
--- a/cloudinit/distros/raspberry_pi_os.py
+++ b/cloudinit/distros/raspberry_pi_os.py
@@ -14,16 +14,34 @@
 
 class Distro(debian.Distro):
     def set_keymap(self, layout: str, model: str, variant: str, options: str):
-        """Currently Raspberry Pi OS sys-mods only supports
-        setting the layout"""
+        super().set_keymap(layout, model, variant, options)
 
         subp.subp(
             [
-                "/usr/lib/raspberrypi-sys-mods/imager_custom",
-                "set_keymap",
-                layout,
-            ]
+                "/usr/bin/raspi-config",
+                "nonint",
+                "update_labwc_keyboard",
+            ],
         )
+        subp.subp(
+            [
+                "/usr/bin/raspi-config",
+                "nonint",
+                "update_squeekboard",
+                "restart",
+            ],
+        )
+        self.manage_service("restart", "keyboard-setup")
+
+        if subp.which("udevadm"):
+            subp.subp(
+                [
+                    "udevadm",
+                    "trigger",
+                    "--subsystem-match=input",
+                    "--action=change",
+                ],
+            )
 
     def apply_locale(self, locale, out_fn=None, keyname="LANG"):
         try:
diff --git a/config/cloud.cfg.tmpl b/config/cloud.cfg.tmpl
index 96fe02ede80..0e7d9685129 100644
--- a/config/cloud.cfg.tmpl
+++ b/config/cloud.cfg.tmpl
@@ -119,7 +119,7 @@ cloud_init_modules:
 {% endif %}
   - bootcmd
   - write_files
-{% if variant not in ["netbsd", "openbsd"] %}
+{% if variant not in ["netbsd", "openbsd", "raspberry-pi-os"] %}
   - growpart
   - resizefs
 {% endif %}
diff --git a/tests/unittests/distros/test_raspberry_pi_os.py b/tests/unittests/distros/test_raspberry_pi_os.py
index 508b84bba11..c9518e1da8f 100644
--- a/tests/unittests/distros/test_raspberry_pi_os.py
+++ b/tests/unittests/distros/test_raspberry_pi_os.py
@@ -10,13 +10,75 @@
 
 
 class TestRaspberryPiOS:
+    @mock.patch("cloudinit.distros.debian.Distro.set_keymap")
     @mock.patch(M_PATH + "subp.subp")
-    def test_set_keymap_calls_imager_custom(self, m_subp):
+    @mock.patch(M_PATH + "subp.which", return_value=False)
+    def test_set_keymap_writes_file_and_runs_basics(
+        self, m_which, m_subp, m_set_keymap
+    ):
         cls = fetch("raspberry_pi_os")
         distro = cls("raspberry-pi-os", {}, None)
-        distro.set_keymap("us", "pc105", "basic", "")
-        m_subp.assert_called_once_with(
-            ["/usr/lib/raspberrypi-sys-mods/imager_custom", "set_keymap", "us"]
+
+        args = [
+            "gb",
+            "pc105",
+            "",
+            "grp:alt_shift_toggle",
+        ]
+
+        # Avoid touching real services
+        with mock.patch.object(cls, "manage_service") as m_manage_service:
+            distro.set_keymap(*args)
+
+            m_manage_service.assert_called_once_with(
+                "restart", "keyboard-setup"
+            )
+
+        m_set_keymap.assert_called_once_with(*args)
+
+        # Two raspi-config calls are always expected
+        m_subp.assert_any_call(
+            ["/usr/bin/raspi-config", "nonint", "update_labwc_keyboard"],
+        )
+        m_subp.assert_any_call(
+            [
+                "/usr/bin/raspi-config",
+                "nonint",
+                "update_squeekboard",
+                "restart",
+            ],
+        )
+
+        # No optional tools available, so only the two calls above
+        assert m_subp.call_count == 2
+
+    @mock.patch("cloudinit.distros.debian.Distro.set_keymap")
+    @mock.patch(M_PATH + "subp.subp")
+    def test_set_keymap_triggers_udevadm_when_available(
+        self, m_subp, m_set_keymap
+    ):
+        cls = fetch("raspberry_pi_os")
+        distro = cls("raspberry-pi-os", {}, None)
+
+        # Only udevadm available
+        def which_side_effect(name):
+            return name == "udevadm"
+
+        with mock.patch(M_PATH + "subp.which", side_effect=which_side_effect):
+            with mock.patch.object(cls, "manage_service"):
+                distro.set_keymap("de", "pc105", "nodeadkeys", "")
+
+        m_set_keymap.assert_called_once_with("de", "pc105", "nodeadkeys", "")
+
+        # Expect 3 subp calls: two raspi-config + one udevadm trigger
+        assert m_subp.call_count == 3
+        m_subp.assert_any_call(
+            [
+                "udevadm",
+                "trigger",
+                "--subsystem-match=input",
+                "--action=change",
+            ],
         )
 
     @mock.patch(M_PATH + "subp.subp")