diff --git a/plugins/lenovo-thinklmi/fu-plugin-lenovo-thinklmi.c b/plugins/lenovo-thinklmi/fu-plugin-lenovo-thinklmi.c
index 172876cdf..0beac7b2d 100644
--- a/plugins/lenovo-thinklmi/fu-plugin-lenovo-thinklmi.c
+++ b/plugins/lenovo-thinklmi/fu-plugin-lenovo-thinklmi.c
@@ -8,6 +8,7 @@
 
 #include <fwupdplugin.h>
 
+#define SLEEP_MODE	"com.thinklmi.SleepState"
 #define BOOT_ORDER_LOCK "com.thinklmi.BootOrderLock"
 
 static gboolean
@@ -27,13 +28,23 @@ fu_plugin_lenovo_thinklmi_startup(FuPlugin *plugin, FuProgress *progress, GError
 }
 
 static void
-fu_plugin_lenovo_thinklmi_device_registered(FuPlugin *plugin, FuDevice *device)
+fu_plugin_lenovo_thinklmi_cpu_registered(FuContext *ctx, FuDevice *device)
 {
-	FuContext *ctx = fu_plugin_get_context(plugin);
-	FwupdBiosSetting *attr;
+	/* Ryzen 6000 doesn't support S3 even if the BIOS offers it */
+	if (fu_device_has_instance_id(device, "CPUID\\PRO_0&FAM_19&MOD_44")) {
+		FwupdBiosSetting *attr = fu_context_get_bios_setting(ctx, SLEEP_MODE);
 
-	if (g_strcmp0(fu_device_get_plugin(device), "uefi_capsule") != 0)
-		return;
+		if (attr != NULL) {
+			g_debug("Setting %s to read-only", fwupd_bios_setting_get_name(attr));
+			fwupd_bios_setting_set_read_only(attr, TRUE);
+		}
+	}
+}
+
+static void
+fu_plugin_lenovo_thinklmi_uefi_capsule_registered(FuContext *ctx, FuDevice *device)
+{
+	FwupdBiosSetting *attr;
 
 	/* check if boot order lock is turned on */
 	attr = fu_context_get_bios_setting(ctx, BOOT_ORDER_LOCK);
@@ -55,6 +66,17 @@ fu_plugin_lenovo_thinklmi_device_registered(FuPlugin *plugin, FuDevice *device)
 	}
 }
 
+static void
+fu_plugin_lenovo_thinklmi_device_registered(FuPlugin *plugin, FuDevice *device)
+{
+	if (g_strcmp0(fu_device_get_plugin(device), "uefi_capsule") == 0) {
+		fu_plugin_lenovo_thinklmi_uefi_capsule_registered(fu_plugin_get_context(plugin),
+								  device);
+	} else if (g_strcmp0(fu_device_get_plugin(device), "cpu") == 0) {
+		fu_plugin_lenovo_thinklmi_cpu_registered(fu_plugin_get_context(plugin), device);
+	}
+}
+
 void
 fu_plugin_init_vfuncs(FuPluginVfuncs *vfuncs)
 {