Some particular Acer/Packard Bell machines hang during shutdown.
The system completely hangs while doing bit operations for turning on SLP_EN
bit in ACPI PM1A control address and Sleep Control Register. Thus the
normal acpi_power_off path can never complete the shutdown process.
We have found a workaround to force these systems to use EFI for poweroff,
included below, but I wonder if anything better can be done. It is especially
not ideal because the system hangs the same way when going into suspend and
we don't have a workaround for that.
Any debugging tips for how to diagnose such problems?
Thanks
Daniel
---
drivers/firmware/efi/reboot.c | 42 +++++++++++++++++++++++++++++++++++++++++-
1 file changed, 41 insertions(+), 1 deletion(-)
diff --git a/drivers/firmware/efi/reboot.c b/drivers/firmware/efi/reboot.c
index 62ead9b..6d1496d 100644
--- a/drivers/firmware/efi/reboot.c
+++ b/drivers/firmware/efi/reboot.c
@@ -4,6 +4,7 @@
*/
#include <linux/efi.h>
#include <linux/reboot.h>
+#include <linux/dmi.h>
int efi_reboot_quirk_mode = -1;
@@ -43,6 +44,45 @@ void efi_reboot(enum reboot_mode reboot_mode, const char
*__unused)
efi.reset_system(efi_mode, EFI_SUCCESS, 0, NULL);
}
+static const struct dmi_system_id force_efi_poweroff[] = {
+ {
+ .ident = "Packard Bell Easynote ENLG81AP",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Packard Bell"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Easynote ENLG81AP"),
+ },
+ },
+ {
+ .ident = "Packard Bell Easynote ENTE69AP",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Packard Bell"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Easynote ENTE69AP"),
+ },
+ },
+ {
+ .ident = "Acer Aspire ES1-533",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire ES1-533"),
+ },
+ },
+ {
+ .ident = "Acer Aspire ES1-732",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire ES1-732"),
+ },
+ },
+ {}
+};
+
+bool efi_poweroff_forced(void)
+{
+ if (dmi_check_system(force_efi_poweroff))
+ return true;
+ return false;
+}
+
bool __weak efi_poweroff_required(void)
{
return false;
@@ -58,7 +98,7 @@ static int __init efi_shutdown_init(void)
if (!efi_enabled(EFI_RUNTIME_SERVICES))
return -ENODEV;
- if (efi_poweroff_required())
+ if (efi_poweroff_required() || efi_poweroff_forced())
pm_power_off = efi_power_off;
return 0;
--
2.9.3
--
To unsubscribe from this list: send the line "unsubscribe linux-efi" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
