https://bugzilla.kernel.org/show_bug.cgi?id=206553

--- Comment #8 from Jan Engelhardt (ej+...@inai.de) ---
I find that acpi_gbl_global_lock_semaphore is initialized with 0 units
(nsaccess.c):

/* Create additional counting semaphore for global lock */
status =
       acpi_os_create_semaphore(1, 0,
       &acpi_gbl_global_lock_semaphore);

and that the acpi_ev_global_lock_handler function (evglock.c) that would send a
unit never gets called, which leads me to believe the hardware is not
generating any ACPI_EVENT_GLOBAL events. But should it, and when?

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