Linux kernel patch for ThinkPad X230 with FHD (1080p) screen mod

x230-screen-and-aspm.patch

diff -aur linux-5.13.0/drivers/acpi/pci_root.c linux-5.13.0-x230/drivers/acpi/pci_root.c
--- linux-5.13.0/drivers/acpi/pci_root.c	2021-09-14 20:19:11.000000000 +0100
+++ linux-5.13.0-x230/drivers/acpi/pci_root.c	2021-09-18 10:33:18.099360328 +0100
@@ -508,7 +508,6 @@
 		 * flag here, to defer the action until after the ACPI
 		 * root scan.
 		 */
-		*no_aspm = 1;
 	}
 }
 
@@ -604,8 +603,6 @@
 		goto remove_dmar;
 	}
 
-	if (no_aspm)
-		pcie_no_aspm();
 
 	pci_acpi_add_bus_pm_notifier(device);
 	device_set_wakeup_capable(root->bus->bridge, device->wakeup.flags.valid);
diff -aur linux-5.13.0/drivers/gpu/drm/i915/display/intel_dp.c linux-5.13.0-x230/drivers/gpu/drm/i915/display/intel_dp.c
--- linux-5.13.0/drivers/gpu/drm/i915/display/intel_dp.c	2021-09-14 20:19:11.000000000 +0100
+++ linux-5.13.0-x230/drivers/gpu/drm/i915/display/intel_dp.c	2021-09-18 10:33:18.103360323 +0100
@@ -102,8 +102,7 @@
 bool intel_dp_is_edp(struct intel_dp *intel_dp)
 {
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
-
-	return dig_port->base.type == INTEL_OUTPUT_EDP;
+	return dig_port->base.type == INTEL_OUTPUT_EDP || strncmp(intel_dp->attached_connector->base.name, "DP-3", 4) == 0;
 }
 
 static void intel_dp_unset_edid(struct intel_dp *intel_dp);
@@ -4652,7 +4651,7 @@
 	if (DISPLAY_VER(dev_priv) < 5)
 		return false;
 
-	if (DISPLAY_VER(dev_priv) < 9 && port == PORT_A)
+	if (DISPLAY_VER(dev_priv) < 9 && port == PORT_D)
 		return true;
 
 	return intel_bios_is_port_edp(dev_priv, port);
diff -aur linux-5.13.0/drivers/gpu/drm/i915/display/intel_lvds.c linux-5.13.0-x230/drivers/gpu/drm/i915/display/intel_lvds.c
--- linux-5.13.0/drivers/gpu/drm/i915/display/intel_lvds.c	2021-09-14 20:19:11.000000000 +0100
+++ linux-5.13.0-x230/drivers/gpu/drm/i915/display/intel_lvds.c	2021-09-18 10:46:34.247274650 +0100
@@ -723,6 +723,14 @@
 			DMI_MATCH(DMI_PRODUCT_NAME, "P845"),
 		},
 	},
+	{
+		.callback = intel_no_lvds_dmi_callback,
+		.ident = "Modified ThinkPad X230",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "2324B14"),
+		},
+	},
 
 	{ }	/* terminating entry */
 };
diff -aur linux-5.13.0/drivers/pci/pci-acpi.c linux-5.13.0-x230/drivers/pci/pci-acpi.c
--- linux-5.13.0/drivers/pci/pci-acpi.c	2021-09-14 20:19:11.000000000 +0100
+++ linux-5.13.0-x230/drivers/pci/pci-acpi.c	2021-09-18 10:33:18.103360323 +0100
@@ -1372,8 +1372,7 @@
 	}
 
 	if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM) {
-		pr_info("ACPI FADT declares the system doesn't support PCIe ASPM, so disable it\n");
-		pcie_no_aspm();
+		pr_info("ACPI FADT declares the system doesn't support PCIe ASPM, but we ignore that on this X230\n");
 	}
 
 	ret = register_acpi_bus_type(&acpi_pci_bus);