[THIN] Re: KB: CTX113039 - A Screen Saver Appears in a Seamless Session When Idle
- From: "Matt Kosht" <matt.kosht@xxxxxxxxx>
- To: thin@xxxxxxxxxxxxx
- Date: Fri, 15 Feb 2008 11:56:02 -0500
I want to keep the screen saver for desktop sessions/thin clients but
disabled it for seamless (the Client's PC screen saver protects that
anyway).
-Matt
On Fri, Feb 15, 2008 at 11:50 AM, Andrew Wood
<andrew.wood@xxxxxxxxxxxxxxxx> wrote:
> 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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