Re: Power button and hotfix Q833642

From: KM (konstmor_at_nospam_yahoo.com)
Date: 08/24/04

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    Date: Tue, 24 Aug 2004 13:52:23 -0700

    Georges,

    Not to fix the main issue you are having but rather to suggest a workaround (or a way to try) for monitor issue you have.

    Try to call CallNtPowerInformation( AdministratorPowerPolicy, ...) to set up ADMINISTRATOR_POWER_POLICY structure fields.
    Particularly try setting MinVideoTimeout and MaxVideoTimeout parameters to some big value.

    When I played with these values I was able to set any timeout on Winlogon/Minlogon images with and without that QFE.

    Also, I think it may be better for you to change not just AC policies (I see SystemPowerPolicyAc in your code) but rather
    SystemPowerPolicyCurrent. I am not sure if there is any difference but I used SystemPowerPolicyCurrent.
    Also verify the policy setting in the system (to be sure about what gets set) - VerifySystemPolicyAc. 

    -- 
 Regards,
        KM, BSquare Corp.
> First, thanks to both for answering.
> Yes, I have tried a number of thing using the power APIs. Currently, I
> do something like:
>
> SYSTEM_POWER_POLICY policy;
> ::CallNtPowerInformation(SystemPowerPolicyAc, NULL, 0, &policy,
> sizeof(policy));
> policy.PowerButton.Action = PowerActionShutdown;
> policy.PowerButton.Flags = POWER_ACTION_QUERY_ALLOWED |
> POWER_ACTION_UI_ALLOWED;
> policy.PowerButton.EventCode = 0;
> policy.VideoTimeout = 60*60*24*7;
> policy.VideoDimDisplay = FALSE;
> ::CallNtPowerInformation(SystemPowerPolicyAc, &policy, sizeof(policy),
> &policy, sizeof(policy);
>
> With this & the hotfix, I get notified, but the system shuts down no
> matter what.
> If I replace the power button action with policy.PowerButton.Action =
> PowerActionNone;, then I get no notification whatsoever (and no
> shutdown), which doesn't solve my problem either.
>
> Other suggestions?
>
> Could someone at MS take note of this potential issue and make sure that
> SP2 doesn't have this problem? Thanks!
> -georges
>
> Slobodan Brcin (eMVP) wrote:
> > Hi George,
> >
> > I hope that someone from MS will look into this if some other solution is not found.
> >
> > This is a problem that I have expected from day one when I saw this QFE. This is a reason why I did not install it, and since I
have
> > solved all other problems (Including monitor goes off) I did not saw point in wasting time with potential new problems with this
> > QFE.
> >
> > You can try configuring action for power button to be none. So minlogon itself will not try to shutdown the system.
> > Since your application is started later regarding the minlogon application the minlogon gets priority in hooking to this message
and
> > it handles it before you get a change to fail this request. So only way if possible is to tell minlogon to do nothing.
> >
> > I think that Konstantin gave some solution to setting power policies in registry, but I can't find this.
> > My solution is rather brutal since in existing driver thread that I have made for other purposes I just tell OS that monitor is
> > required and that reset counter to zero.
> >
> > Best regards,
> > Slobodan
> >
> > PS:
> > Let us know what you find out.
> >
> > "Georges Berenger" <dontSpamBerenger@francenet.fr> wrote in message news:uF5U4aXiEHA.3928@TK2MSFTNGP11.phx.gbl...
> >
> >>For my device, I need to detect that the power button has been pressed,
> >>a problem discussed many times...
> >>I have a message filter that properly intercepts
> >>WM_POWERBROADCAST/PBT_APMQUERYSUSPEND when the power button is pressed,
> >>and I can take the appropriate action (ask the user for a confirmation).
> >>  Before installing Q833642, life was good.
> >>Since I applied the hotfix Q833642, I still get the message, but then,
> >>no matter what I do, my system powers down after a few seconds. My apps
> >>aren't quit, the system is simply powered off. In response to the
> >>WM_POWERBROADCAST/PBT_APMQUERYSUSPEND message, I properly return
> >>BROADCAST_QUERY_DENY which should cancel the system's shutdown, but
> >>obviously, that doesn't work.
> >>
> >>An obvious short-term solution is to remove the hotfix, which I had
> >>installed in the hope that an other problem would be solved (the monitor
> >>going off after a while), no matter what power saving policy had been set.
> >>
> >>Is there something else I could try to prevent the system from powering
> >>down?
> >>Maybe someone at MS can make sure that SP2's Minlogon will behave
> >>properly there, since we will then be unable to select what old-patches
> >>are installed (I am assuming that Q833642 will be built-in SP2, hence my
> >>worry...).
> >>Thanks,
> >>-georges
> >
> >
> >
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