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Group: Forum Members
Last Login: Monday, August 09, 2010
Posts: 47,
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Hi,
On and off over the past couple of years VNC Manager will have versions where the remote dual screens I manage over our VPN tunnels will not work well. It's starting up again, and has been this way through the past few versions. I can connect, but only see screen 1. I can usually switch to screen 2, but if I hit the screen button again which should show both screens side by side, VNC Manager crashes. I do have UltraVNC setup for both screens on start, so I shouldn't need to switch screens.
I do have the latest deployment of UltraVNC from VNC Manager pushed to these workstations. I'm also using the display driver for UltraVNC on the machines. I've tried most encoding types. And I've tried other settings on the UltraVNC server side (client computer).
Any ideas?
Scott
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Post #3087
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Group: Administrators
Last Login: 6 minutes ago
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Hi Scott,
I meant to look at this problem but I totally forgot about it  I'm gonna do it on Monday. The fact the you use VPN has nothing to do with the dual-screen issue; it is caused by something else.
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Kindest Regards,
SmartCode Solutions Support
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Post #3088
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Group: Forum Members
Last Login: Monday, August 09, 2010
Posts: 47,
Visits: 62
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He he, no problem. I also forgot I started a thread on this in the support forum. Oops.
Anyway, I figured. If it helps, the VPN connect is much slower than LAN, and is on a different subnet. I.E. my sub is 192.168.0.x, theirs is 192.168.4.x, etc etc. If you need any other info that may help, please let me know and I'll provide what I can.
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Post #3090
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Group: Forum Members
Last Login: Monday, August 09, 2010
Posts: 47,
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Well, I found an interim, if not perminant fix. From reading some of your recent posts here it seems you are recommending the "Tight VNC" install more than others. I decided to try that on the remote computers. I hadn't tried it before because it lacked some features. Now I'm finding that just connecting seems to be a much needed feature 
Anyway, the dual monitor and dropped connection problems don't occur at all with Tight VNC. The display speed is quite fast too, though the visual appearance of the remotes is much less clean than with UltraVNC. That problem I can easily put up with as long as the connectivity is good and VNC Manager doesn't crash, like it does every time using UltraVNC.
Scott
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Post #3131
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Group: Administrators
Last Login: 6 minutes ago
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[ The display speed is quite fast too, though the visual appearance of the remotes is much less clean than with UltraVNC.
The appearance should be the same no matter what VNC distro is used. The only reason I can think of is if you use JPEG compression. It would cause the screen image to become less sharp.
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Kindest Regards,
SmartCode Solutions Support
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Post #3132
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Group: Forum Members
Last Login: Monday, August 09, 2010
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Support (s-code) (7/28/2010)
[ The display speed is quite fast too, though the visual appearance of the remotes is much less clean than with UltraVNC. The appearance should be the same no matter what VNC distro is used. The only reason I can think of is if you use JPEG compression. It would cause the screen image to become less sharp.
Wow, you're good. I'd forgotten I had pumped up the compression ratio a lot to see if that would solve the issue with UltraVNC not connecting properly.
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Post #3133
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Group: Forum Members
Last Login: Monday, August 09, 2010
Posts: 47,
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Hey, just a follow up. I found that "Copy Cache Encoding" in the VNC settings is a real show stopper for my remote VPN connections. It may be that this was the culprit all the time. I'm also finding that many of the format settings for VNC can cause all types of oddities and various levels of operation or non-operation.
Right now for VPN connections, the "tight" encoding with either UltraVNC or Tight VNC works best on our dual monitors. Tight VNC is a bit better. But for local connections, tight is not the best. "Ultra" encoding gives the best visual appearance and speed, but also crashes VNC Manager a lot. So, I haven't found the best solution there yet.
I have to hand it to you guys at SmartCode, I realize that dealing with VNC means you deal with a lot of 3rd parties and their development abilities. Keep up the great work though, even with their software issues VNC Manager is a piece of software I could not live without!
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Post #3140
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Group: Administrators
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Thank you!
I wasn’t aware about any problems with Ultra encoding. Should you get another crash, could you please send us the error stack trace or a screenshot of the exception window?
PS: You correct in your findings, Ultra is the fastest for LAN and Tight and also ZlibHex are the most suited for slow connections.
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Kindest Regards,
SmartCode Solutions Support
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Post #3141
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