Remote Desktop freezes my application for 10-30 seconds, c..

Archived from groups: microsoft.public.windowsxp.work_remotely (More info?)

I have an always on connection and I get the same problem randomly. It seems
that the connection to the server freezes when I do something intese but it I
wait for a few it works normally for several more minutes until it gets the
inclination to freeze up again. I have not been able to find a fix either.
Hope you get this resolved.

"Warren Postma" wrote:

> We have a laptop, and it has a modem which accepts incoming PPP connections.
> When the remote users dial into this laptop, they need to see the status of
> a program running on the laptop. The program reads stuff through a serial
> port, to display the status of some equipment. When remote desktop logons
> happen, the program freezes. If I look at the communications lights, I can
> see that the freezeups happen reliably whenever:
>
> (a) an RDP session is starting.
> (b) some very graphically complex thing such as the start menu is being
> displayed.
>
> The freezes last from 10 to 30 seconds, and the entire application is
> non-responsive or totally frozen. It does not try even ONCE to send out
> anything through the serial port. I have checked its logs (I wrote this
> program) and it seems that the entire program is frozen, that the main
> thread is blocking on some Win32 GDI/system call for up to 30 seconds, which
> seems wrong to me. To my way of thinking, RDP should read a cached version
> of this screen graphical information, and not block the main application
> ever, even when logging in or out via RDP.
>
> Both machines run Windows XP service pack 1. Any suggestions? The
> problem goes away when I use a third-party remote desktop tool such as VNC
> instead of the built-in Microsoft Remote Desktop connection feature, but VNC
> has other (less severe) problems.
>
> Regards,
> WP
>
>
>