What is the output of ls /sys/bus/acpi/devices/*PNP0CA0* on such a system? Or grep -H . /sys/bus/acpi/devices/*PNP0CA0*/modalias? And the output of cat /sys/bus/acpi/devices/*PNP0CA0*/uevent?
What is the output of ls /sys/bus/ acpi/devices/ *PNP0CA0* on such a system? acpi/devices/ *PNP0CA0* /modalias? acpi/devices/ *PNP0CA0* /uevent?
Or grep -H . /sys/bus/
And the output of cat /sys/bus/