I have found (with RealVNC 3.3.6 and TightVNC 1.2.6) that if you connect to an XP machine running VNC server that if there is already a second log on (i.e. user switching has been used), you will get a black screen. If you log on as the second user, as soon as your logon is processed, the VNC connection will be dropped, and subsequent reconnections get the black screen. It must be something to do with the way XP handles the screens of "background" users. If the extra logged on users log off (bringing the logon count down to 1 or 0), then VNC will see the desktop again as usual.
Angus. ----- Original Message ----- From: "David Gurr" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, March 11, 2003 5:41 AM Subject: Re: Black screen in VNC and Terminal Services > I have a similar problem. I have an XP Pro system at > home running VNC Server. When I connect to it from > work, sometimes it works fine, and sometimes I get the > black screen. > > This happens when using the vncviewer on Win95, and > when using it on Linux. > > I've often had it working fine one day, and the next > it fails, despite their being no reboots or console > logins at the server end. > > Restarting the server sometimes cures it, but often > doesn't. It'll then just start working again by itself > sometime later. > > For the record, I'm using 3.3.6 on server and client. > Sometime soon I'll try upgrading to 3.3.7. > > D> > > From: "Craig Cardinet" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Subject: Black screen in VNC and Terminal Services > Date: Mon, 10 Mar 2003 10:37:27 -0600 > > I've searched through the topics and found quite a few > similar issues, > but > nothing that quite addresses the problem that I'm > having. I use W2K > Pro (at > home) to connect to my office using both VNC and > Terminal Services, > depending. It's worked fine for months. Last week, I > attempted to > connect > to my pc at the office (W2K Pro), but I had left my > screen saver on, > and > after seeing a brief flash of the ss, got nothing but > a black screen. > Trying to send C-A-D does nothing. I then tried to > connect to a W2K > server > pc through Terminal Services (as I've done 100 times > before, > successfully) > and I get the same black screen. I've uninstalled VNC > and TS - same > thing. > I can connect to the same pc's using both VNC and TS > from other remote > pc's, > no problem. Any suggestions? > > > > __________________________________________________ > Do You Yahoo!? > Everything you'll ever need on one web page > from News and Sport to Email and Music Charts > http://uk.my.yahoo.com > _______________________________________________ > VNC-List mailing list > [EMAIL PROTECTED] > http://www.realvnc.com/mailman/listinfo/vnc-list _______________________________________________ VNC-List mailing list [EMAIL PROTECTED] http://www.realvnc.com/mailman/listinfo/vnc-list
