Comment 10 for bug 1218309

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Mantas Zimnickas (sirex) wrote :

Same here, Gnome Shell 3.12.2 on Ubuntu 12.04. Gnome Shell freezes randomly, for few seconds and comes back after few seconds. During freeze I can move mouse.

I guess this is caused by some of extensions, because Gnome Shell runs on single thread using async JavaScript. So if an extension does a blocking non-io bound operation, whole Gnome Shell freezes, while this operation is finished.