RE: WinXP and quick login switching

[Ross P. <rpr...@Im...>]

I don't know if it's been found before, but it sort of makes sense.

Login switching under XP works by, in effect, creating a whole separate
desktop for each active login. The programs that are open for "Firstuser"
are attached to the first desktop, and run under the security context of
Firstuser.  The programs that are open for Seconduser are attached to the
second desktop, and run under the security context of Seconduser.

So the switching part is when Windows disconnects the physical screen (and
keyboard, mouse, and maybe sound, I've never tested that) from the first
desktop and connects them to the second desktop.  The programs on the first
desktop continue to run, but have no access to the physical devices.

Winvnc, however, attaches more firmly to the desktop than most programs; it
hooks into screen updates and also has a timed poll of the screen.  It may
be that this attachment is firm enough that the login switcher, waiting for
all programs to be idle so it can disconnect the desktop, never gets a
chance.

My recommendation would be to quit Winvnc while he's actually using the
machine, and to re-start it when he's done or when he needs to share his
desktop with helpdesk personnel.

> -----Original Message-----
> From: David Black [mailto:dav...@xi...]
> Sent: Wednesday, August 28, 2002 4:07 PM
> To: vnc...@li...
> Subject: WinXP and quick login switching
> 
> 
> I have a user of TightVNC 1.2.4 here who claims it is 
> interfering with 
> Windows XP's quick login switching.
> 
> Once a TightVNC session is running, he can no longer switch back and 
> forth between logins; he is locked to one or the other.
> 
> Is this possibly a known issue?
> 
> Thanks in advance for any info.
> 
> David Black
> Communications Technology Division
> Xilinx, Inc.
> 
> 
> 
> -------------------------------------------------------
> This sf.net email is sponsored by: Jabber - The world's 
> fastest growing 
> real-time communications platform! Don't just IM. Build it in! 
> http://www.jabber.com/osdn/xim
> ___________________________________________________________
> TightVNC mailing list, VNC...@li...
> https://lists.sourceforge.net/lists/listinfo/vnc-tight-list
>