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[mathewphillips]

Hi,

I have been using this program for a while now and I have to say I love it! However, I am getting a crash/hang when in theatre view and have experienced this problem in all versions I have tried. This is only when I use 3D visualisations in the list view of an album (Cover Art works fine). The visualisation will disappear, hanging the interface but the music will continue to play. I have to force the program to close and restart it. I can reproduce this on both of my PCs. It does not make a difference if I use 'fullscreen exclusive mode' or not.

Both PCs are running the latest graphics drivers and up to date versions of DirectX.

PC1 Specs
OS: Windows 8 64 bit
MC Version: 18.0.191
GPU: GeForce GTX 660 Ti
GPU Driver: 320.18

PC2 Specs
OS: Windows 8 32 bit
MC Version: 18.0.191
GPU: Radeon HD 6450
GPU Driver: 13.4

Thanks in advance

[Matt]

Welcome.

This is only when I use 3D visualisations in the list view of an album (Cover Art works fine).

I'm not certain I understand where in Theater View this is.  Do you have an easy way to share a screenshot?  Or to describe in a little more detail?

Thanks.

[mathewphillips]

Sorry, I didn't think it made much sense after reading it back!

https://plus.google.com/photos/111421156496191036034/albums/5883438214111185841/5883438220667724418?banner=pwa&pid=5883438220667724418&oid=111421156496191036034

[Matt]

Thanks for the screenshot.

We've heard a few reports of Theater View hanging when dealing with the picture-in-picture.

However, we haven't been able to reproduce them.  Let me spend some more time trying to trigger it.

If you have any other clues, or if anyone else could test, I'd appreciate it.

[Matt]

I'm testing pretty much the same thing, even with the same album.

Once I have a track selected and it's showing the 3d visuals, what action will cause it to lock up?

[Matt]

I was able to reproduce it on a Windows 8 machine.

More when I know more.

[mathewphillips]

I just reproduced it by moving the mouse over another track in the list (which should change the visualisation to the selected song artwork?). I can also reproduce it by clicking back. I should also point out that using a keyboard will do the same thing.

The only thing that will not make it hang is if you switch between the list and display view.

[csimon]

I've had the same issue in the last couple of days I think - when going into Display View while in Theater View, Theater View hangs. Not restricted to visualisations, I've currently got my Display View set as the Ocean (I think) flavour of file info.

[Matt]

This problem is proving to be really tricky.  It feels like a driver / Windows 8 bug.

Basically, a call to present the 3d frame is deadlocking (IDirect3DSwapChain9::Present).  I've tried moving the present from a background thread to the main thread, but that just moves the lock.

It's possible Windows 8 or the stock drivers just do something bad when a child window uses a windowed 3d device when the parent window also uses one. 

I'm not sure.  I'll keep digging.

[Matt]

It also happens on my home Windows 8 machine with a GTX 680 and the latest drivers.

It seems to happen with a video when using EVR or with 3d visualizations.  madVR doesn't seem to cause it, nor does track info or 2d visualizations.

[datdude]

Happens to me on windows 7 a lot when playing soundspectrum's aeon visualizer. If i switch between list, info, and playing now it often hangs but doesn't crash. If i hit escape and back out i can usually get out of it. I do get crashing sometimes when in playing now's list view and drilling in and out of a file's info tab. I've resorted to not displaying cover art on the info templates for audio to avoid these issues, since the picture in picture doesn't display.

[Matt]

This problem is a real stinker.  It happens to MC17 just the same, so that rules out it being caused by some cross-platform UI change.

It's Windows 8 only.

I can't find anything we're doing wrong, and no work around I've tried has helped yet.

I have to table it for a few days, but I'll circle back next week.

[csimon]

I've got Windows 7!

But I'm not sure if the hangs and things I was experiencing were due to the "full screen exclusive" problem - it's now looking like these are two different things if you can specifically say that this one is a Win8 problem. I'll have to experiment a bit more and see if I can get it to hang now that I've got full screen exclusive switched off.

[Matt]

I've got Windows 7!

But I'm not sure if the hangs and things I was experiencing were due to the "full screen exclusive" problem - it's now looking like these are two different things if you can specifically say that this one is a Win8 problem. I'll have to experiment a bit more and see if I can get it to hang now that I've got full screen exclusive switched off.

I think it's a different thing.

Also, as a disclaimer, running Theater View in exclusive mode is an experimental option.  We played with it to see if it would help on weak GPUs, but it hasn't been extensively tested.

[Matt]

This should be fixed in a coming build.

We're switching the presentation model on Win7 and Win8 to workaround the issue.

The new model should be more efficient anyway, so the change should be for the best.