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From: jaugustine@verizon.net
Newsgroups: microsoft.public.windowsxp.general
Subject: Re: Unable to "Standby" my ThinkPad T23 Laptop
Date: Sat, 18 Nov 2017 13:30:56 -0500
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>The "dumppo" tool is supposed to have two purposes.
>
>1) List the currently supported ACPI states
>2) Issue an override, in an attempt to re-enable missing
>    state support, when any associated hardware mis-configurations
>    have been corrected.
>
>It doesn't help to do an override, if the underlying problem
>is still present.
>
>Say, for example, in WinXP, you look at Device Manager,
>look under Computer, and it doesn't say "ACPI Multiprocessor PC".

Hi Paul,

    It DOES show "ACPI....." under "Computer" via "Device Manager".

    BTW,  I forgot to mention that the FN & F4/Sleep keys combo does
NOT work with WinXP,  but DOES (put to "sleep") with Win98.

  Here is the results of using command, "dumppo admin cap":

Admin policy overrides
Min sleep state......: S3
Max sleep state......: S4 - hibernate
Min video timeout....: 0
Max video timeout....: -1
Min spindown timeout.: 0
Max spindown timeout.: -1
power capabilities
System power capabilities
Power Button Present....: TRUE
Sleep Button Present....: TRUE
Lid Present.............: TRUE
System states supported.: S5 
Hiber file reserved.....: FALSE
Thermal control.........: TRUE
CPU Throttle control....: TRUE
Processor min throttle..: 64
Processor trottle scale.: 100 (1%)
Some disk will spindown.: TRUE
System batteries present: TRUE 
System batteries scale..: (G:0 C:0) (G:0 C:0) (G:0 C:0) 
Ac on line wake ability.: Unspecified
Lid wake ability........: Unspecified
RTC wake ability........: S4 - hibernate
Min device wake.........: Unspecified
Default low latency wake: Unspecified

LEGACY DRIVER DETECTED
 VgaSave

  Again, Thanks, John

>When the word ACPI is missing, it means ACPI isn't present
>at all. You would probably lose both Sleep and Hibernate.
>The OS might then revert to APM (the older standard), and
>you would see
>
>    "It is safe to turn off this computer"
>
>in a 640x480 window just after shutdown. The computer
>doesn't even know about the "power button" and cannot
>"press" it's own power button in that case. What's under
>computer is called the HAL (Hardware Abstration Layer),
>and certain HAL transitions are hard to fix. Getting
>ACPI back is a re-install (repair install).
>
>When the BIOS supports ACPI, the BIOS passes ACPI
>tables to the OS, the OS installer can install an
>ACPI subsystem. The word "ACPI" will be present for
>the entry in Computer.
>
>In that subsystem, are standby, sleep, hibernate.
>Sometimes, one of the "smaller" BIOS settings, disables
>sleep support. The OS takes that to heart, and mimics
>what it sees. It *removes* sleep support. And, it's
>in no rush to put it back either. It's a trap door
>behavior. For example, your CMOS battery could die one
>day, and an errant setting could "tip over" your
>Sleep in WinXP, requiring dumppo.
>
>The "dumppo" program is like a hint. It's saying to
>the OS "why don't you try sleep again". If the setting
>takes and the OS doesn't disable sleep again, then the
>dumppo listing capability should then show that sleep
>support is back.
>
>So the first step, is to try to get dumppo to list
>the currently supported states.
>
>https://s7.postimg.org/f1tp6fyaz/dumppo.gif
>
>In the more detailed output, I have
>
>    S1 S3 S4 S5
>
>There is no S2.
>
>S1 = Standby (monitor goes blank)
>S3 = Sleep
>S4 = Hibernate
>S5 = Soft Off
>
>HTH,
>     Paul
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