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ACPI: Force acpi_skip_timer_override for Gigabyte GA-MA78GPM-UD2H

PATCH New Angus Turnbull 1 participant 1 message Nov 22, 2011

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Angus Turnbull

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PATCH 1/1 ACPI: Force acpi_skip_timer_override for Gigabyte GA-MA78GPM-UD2H

Several Gigabyte motherboards from the SB700 generation have an issue where they will not boot or suspend/resume reliably without "acpi_skip_timer_override" on the kernel command line. I have a GA-MA78GPM-UD2H (AM2+ socket) and the below patch allows it to boot successfully by adding it to the quirks list (the AMD bug detection in early_quirks.c isn't enabling acpi_skip_timer_override automatically).

https://lkml.org/lkml/2011/3/31/195 covered a very similar issue.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/658955 is a bug report with my system information.

arch/x86/kernel/acpi/boot.c +14 -0
diff -ru a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
@@ -1466,6 +1466,19 @@
 		     DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
 		     },
 	 },
+	/*
+	 * Buggy Gigabyte ACPI on SB700 boards, will not boot or resume
+	 * reliably without acpi_skip_timer_override (last stable BIOS).
+	 * Affects multiple boards of this generation.
+	 */
+	{
+	 .callback = dmi_ignore_irq0_timer_override,
+	 .ident = "Gigabyte GA-MA78GPM-UD2H",
+	 .matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR,
+			"Gigabyte Technology Co., Ltd."),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "GA-MA78GPM-UD2H"),
+		     },
+	 },
 	{}
 };