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Old 29-11-2014, 10:05   #1
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OpenCPN 3.3.2222 "Not Responding" when zooming

I just started having a problem with OpenCPN 3.3.2222 freezing while zooming in and out. The title bar says "Not Responding" and Task Manager shows OpenCPN using 100% of one of the CPUs.

This started happening after I downloaded the latest versions of RNC charts from the NOAA web page. I downloaded and unzipped http://www.charts.noaa.gov/RNCs/All_RNCs.zip.

I have tried uninstalling and reinstalling OpenCPN and removing and re-installing the NOAA charts, but it has made no difference. I used to have the same sort of problems with OpenCPN freezing while zooming in 3.2.2, but 3.3.2222 fixed that until I downloaded these charts.

Any help would be appreciated.

Thanks,

Jim
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Old 29-11-2014, 13:16   #2
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Also happening in 3.3.2316...

The Not Responding hang when zooming seems to happen only when Use Accelerated Graphics (OpenGL) is checked. Unfortunately, if I don't use OpenGL, I can't read the screen. Also, FWIW, I am zooming with the mouse scroll wheel. If I click on the zoom in/out and scale in/out buttons one at a time and patiently wait for OpenCPN to re-draw the screen before clicking again, the hangs seems to happen less frequently. But it's pretty hard to navigate that way.
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Old 29-11-2014, 13:42   #3
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Re: OpenCPN 3.3.2222 "Not Responding" when zooming

Jim...
Do you have the texture cache generated? If not, it is computed on the fly, so especially if your machine is "slow", it will take a lot of resources (until the textures are generated for your charts), then it should get "super fast"...

Pavel
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Old 29-11-2014, 13:49   #4
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Re: OpenCPN 3.3.2222 "Not Responding" when zooming

I have tried "Texture Compression with Caching" both on and off and it didn't seem to help. I have let it run for 30 minutes or more to see if the program would ever recover, and it never did.

I found an old set of RNC charts (from 3/2013) on my desktop computer and copied them over to the machine having the problem (my laptop), and so far it hasn't hung yet. The charts I was using on the laptop that seemed to work fine were from 3/2014, but unfortunately I didn't keep them, I just copied the new charts on top of the old ones when I updated. Do you know what date charts you are using?
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Old 29-11-2014, 14:19   #5
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Re: OpenCPN 3.3.2222 "Not Responding" when zooming

Hello Jim326,

As you are using a beta version, I suggest you to download the very latest one 3.3.2316.

Hope that it will cure your bug.

Keep us informed

Serge
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Old 29-11-2014, 14:24   #6
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Re: OpenCPN 3.3.2222 "Not Responding" when zooming

I have already installed 3.3.2316 (see post 2 in this thread). It also hangs.
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Old 29-11-2014, 14:35   #7
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Re: OpenCPN 3.3.2222 "Not Responding" when zooming

Jim...
The full build of the cache for all the NOAA charts takes hours even on my Core i7 machine - it really is a lot of processing that has to be done...
I'm currently testing with the very latest NOAA set (published 11/26/2014). No hanging at all once the chart is already processed.
To give it a try, you can do a quick test:
- Move your boat somewhere
- Go to Toolbox - Display - OpenGL Options...
- Tick "Rebuild Texture Cache", OK

A dialog box will appear, showing the progress of the cache build and the distance from the boat the currently processed chart is. Let it work for a while to populate the textures for the nearest charts and then hit Skip.
The program should be fast around the location of the boat, no hanging anymore.

Pavel
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Old 29-11-2014, 14:48   #8
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Re: OpenCPN 3.3.2222 "Not Responding" when zooming

I haven't done a full cache build before, so I will let that run a while and see what happens. The problem occurs when I am doing a fast zoom out to very small scales, dragging the chart to a place several hundred miles up the coast, then zooming in to a very large scale again. I don't think that letting it build for only a small radius from my location will help for this problem.

The Compressed Cache Update dialog says it estimates it will run about 10 hours on my little old laptop. I will let the texture cache build run overnight and let you know tomorrow what happens.
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Old 29-11-2014, 14:56   #9
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Re: OpenCPN 3.3.2222 "Not Responding" when zooming

Jim...
Yes, that exactly describes what I would expect. Be warned - there will be a change in the way the cache is managed, which will unfortunately mean another rebuild, so maybe wait, the next beta should probably be out in a day or two...

Pavel
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Old 30-11-2014, 05:12   #10
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Re: OpenCPN 3.3.2222 "Not Responding" when zooming

I've been using OpenCPN pretty heavily since building the texture cache, and have had no hangs at all. That was the problem!

I will have to remember to rebuild the texture cache the next time I download a new version.

Thanks for the help!
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