diff --git a/MAINTAINERS b/MAINTAINERS
index 806f81b..f781f93 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -383,7 +383,7 @@ ACPI COMPONENT ARCHITECTURE (ACPICA)
 M:	Robert Moore <robert.moore@intel.com>
 M:	"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
 L:	linux-acpi@vger.kernel.org
-L:	devel@acpica.org
+L:	acpica-devel@lists.linuxfoundation.org
 S:	Supported
 W:	https://acpica.org/
 W:	https://github.com/acpica/acpica/
diff --git a/drivers/acpi/prmt.c b/drivers/acpi/prmt.c
index 998101c..3d4c462 100644
--- a/drivers/acpi/prmt.c
+++ b/drivers/acpi/prmt.c
@@ -236,6 +236,11 @@ static acpi_status acpi_platformrt_space_handler(u32 function,
 	efi_status_t status;
 	struct prm_context_buffer context;
 
+	if (!efi_enabled(EFI_RUNTIME_SERVICES)) {
+		pr_err_ratelimited("PRM: EFI runtime services no longer available\n");
+		return AE_NO_HANDLER;
+	}
+
 	/*
 	 * The returned acpi_status will always be AE_OK. Error values will be
 	 * saved in the first byte of the PRM message buffer to be used by ASL.
@@ -325,6 +330,11 @@ void __init init_prmt(void)
 
 	pr_info("PRM: found %u modules\n", mc);
 
+	if (!efi_enabled(EFI_RUNTIME_SERVICES)) {
+		pr_err("PRM: EFI runtime services unavailable\n");
+		return;
+	}
+
 	status = acpi_install_address_space_handler(ACPI_ROOT_OBJECT,
 						    ACPI_ADR_SPACE_PLATFORM_RT,
 						    &acpi_platformrt_space_handler,
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 8a541ef..65cec7b 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -517,6 +517,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 	},
 	{
 	 .callback = video_detect_force_native,
+	 /* Acer Aspire 4810T */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 4810T"),
+		},
+	},
+	{
+	 .callback = video_detect_force_native,
 	 /* Acer Aspire 5738z */
 	 .matches = {
 		DMI_MATCH(DMI_SYS_VENDOR, "Acer"),