[THIN] Re: KB: CTX113039 - A Screen Saver Appears in a Seamless Session When Idle
- From: "Andrew Wood" <andrew.wood@xxxxxxxxxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Fri, 15 Feb 2008 16:50:25 -0000
Why not block inheritance on that gpo?
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf
Of Matt Kosht
Sent: 15 February 2008 16:34
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: KB: CTX113039 - A Screen Saver Appears in a Seamless
Session When Idle
I am getting some flak from our users on this. My company set a 20 min
blank screen saver with password protection on the GPO that affects
our Citrix servers. This is what I want for thin clients/desktop
sessions. Does any one have a canned public domain script or program
that can turn it off when launching a seamless app? If not I will try
writing one, but I didn't want to reinvent the wheel.
-matt
On Tue, May 1, 2007 at 1:02 PM, Jim Kenzig ThinHelp.com
<jkenzig@xxxxxxxxx> wrote:
> CTX113039 - A Screen Saver Appears in a Seamless Session When Idle
>
>
> This document was published at:
http://support.citrix.com/article/CTX113039
>
>
>
> Document ID: CTX113039, Created on: Apr 30, 2007, Updated: Apr 30, 2007
>
> Products: Citrix MetaFrame XP 1.0 for Microsoft Windows 2000, Citrix
> MetaFrame XP 1.0 for Microsoft Windows 2003, Citrix MetaFrame Presentation
> Server 3.0 for Microsoft Windows 2000, Citrix MetaFrame Presentation
Server
> 3.0 for Microsoft Windows 2003, Citrix Presentation Server 4.0 for
Microsoft
> Windows 2000, Citrix Presentation Server 4.0 for Microsoft Windows 2003,
> Citrix Presentation Server 4.5 for Windows Server 2003, Citrix
Presentation
> Server 4.5 for Windows Server 2003 x64 Edition
>
>
>
> Symptoms
>
> When working in a seamless application, a screen saver appears after
leaving
> the session idle.
>
> Troubleshooting
>
> By design, Citrix disables screen savers for published applications.
Active
> screen savers can contribute towards a performance hit to bandwidth and
> server resources in general.
>
> Important: Citrix does not prevent screen savers from appearing in a
> seamless session; it disables screen savers upon starting. This is
> accomplished through wfshell when the session is started by calling
> SystemParametersInfo( SPI_SETSCREENSAVEACTIVE, FALSE, 0,
> SPIF_SENDWININICHANGE );
>
> Custom code can be written to view or modify the screen saver status by
> using the following Microsoft Windows application programming interface
> (API) call:
>
> SystemParametersInfo()
>
> With the following screen saver parameters:
>
> SPI_GETSCREENSAVEACTIVE
> SPI_GETSCREENSAVERRUNNING
> SPI_GETSCREENSAVETIMEOUT
> SPI_SETSCREENSAVEACTIVE
> SPI_SETSCREENSAVETIMEOUT
>
> See Microsoft Knowledge Base article 315725.
>
> Custom scripts can be written for enabling/disabling screen savers using
the
> above API calls.
>
> Cause
>
> There is a Group Policy object (GPO) in the environment with a screen
saver
> parameter configured. If the GPO is modified while there are sessions on
the
> server, the GPO sets SPI_SETSCREENSAVEACTIVE = TRUE, causing any active
> sessions to go into a screen saver when left idle.
>
> The GPO setting can be found under User Configuration >Administrative
> Templates > Control Panel > Display.
>
> View the setting by double-clicking Screen Saver.
>
>
>
> Resolution
>
> Log off all active sessions and relaunch them. This sets the
> SPI_SETSCREENSAVEACTIVE parameter in the session to FALSE again.
>
> -Or-
>
> Make sure all sessions are logged off the server before modifying any GPO
> with the screen saver setting enabled.
>
> More Information
>
> http://msdn2.microsoft.com/en-us/library/ms724947.aspx
>
> One example of code used is available from the CodeGuru developer Web
site.
>
> http://www.codeguru.com/cpp/misc/misc/screensavers/article.php/c419/
>
> --
> Jim Kenzig
> Microsoft MVP - Terminal Services
> http://www.thinhelp.com
> Citrix Technology Professional
> Provision Networks VIP
> CEO The Kenzig Group
> http://www.kenzig.com
> Blog: http://www.techblink.com
>
>
>
>
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