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Blender/Cycles rendering breaks web audio
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Well, I don't know where to report this problem, but for some reason, since upgrading to Ubuntu Onieric 11.0, whenever I start rendering something in Blender, audio in any web browser stops working. Everything goes silent. I don't know if it's a problem with Adobe Flash Player or Ubuntu, but Blender definitely triggers it. I've tested it, and in any file, Cycles or BI, as soon as I hit the Animation Render button, and refresh whatever page I was on, audio stops working. Local files, not streamed from the web still work fine.

Juniper HDMI Audio [Radeon HD 5700 Series]

7.8 GB Memory
Intel® Core™ i7-2600 CPU @ 3.40GHz × 8

Ubuntu 11.10 64-bit
Mozilla Firefox(Though I don't think Chromium is working either)



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Most probably it's something with audio setup in your system. It might b configured in a way that applications has got exclusive access to soundcard. Maybe trying to switch between sdl/openal might help, sometimes un-installing pulseaudio helps.
There's not much what might be done from blender side. Thanks for the report, but it's not a bug in blender.