I finally found "S5" definition , details can got from my following reply. Next step, I will send this information to firmware engineer to verifySSDT17.dsl is right for our sentosa. Because same values into registers every
time, but got different hardware behaviors. So we must doubt hardware and firmware design. Now, from software point of view : acpi_enter_sleep_state() is the lastfunction to run when shutdown machine , which write value into acpi registers to tell hardware to enter S5 (SLP_TYPx and SLP_EN) .Once written to these two
registers, software task has been over. The left things are hardware is to work. So I think Linux kernel is good, this issue is from related with kernel,at acpi driver's logic is right. I have printed values which will bewritten to acpi registers , those values are the same every time, but hardware
has different behaviors , so we need firmware engineer to help me check .Maybe I need to ask firmware designer what is the meaning of this definition:
Where is {0x7,0x7} from ?? which datasheet ? which document ? In "SSDT17.dsl" . DefinitionBlock ("SSDT17.aml", "SSDT", 2, "HP ", "RX2800-2", 0x00000007) { Scope (\) { Name (\_S5, Package (0x03) { 0x07, 0x07, Zero }) }This is equal of that return from acpi_get_sleep_type_data(5,&type_a, &type_b)
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