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These tablets' DSDT does not set acpi_gbl_reduced_hardware, so acpi_power_off gets used as pm_power_off handler. Not setting acpi_gbl_reduced_hardware may very well be correct for these tablets, but acpi_power_off is broken on them. Using acpi_power_off causes "poweroff" to hang hard. Requiring pressing the powerbutton for 30 seconds *twice* followed by a normal 3 second press to recover. Avoid this by overriding the global pm_power_off handler to do an EFI poweroff, which does work, instead. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20220223133153.730337-5-hdegoede@redhat.com |
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