[Bug 635023] Re: firefox plugin-container using 99% CPU - overheating and lock-up

Anthony Harrington untaintableangel at ubuntu.com
Wed Jul 17 08:52:32 UTC 2013


If this is still an issue for anyone who is running the latest and
greatest version of Firefox etc and has stumbled upon this needing a
quick tip, there is a bit of a messy workaround for this issue:

The plugin-container is designed to contain crashes from plugins like
flash and stop them from crashing the browser along with them.

Flash may crash even nowadays (I find it surprising given how long it's been out and how employed it still is! It is still being updated now and then and html5 has yet to be fully implemented across youtube etc (usually because of it impeding advertisements)). 
The plugin container can be disabled if you are prepared for the chance that a stray flash application can inadvertently crash and take the browser with it (annoying), by doing this:

Go to the page "about:config" in firefox
Search for a boolean entry named "dom.ipc.plugins.enabled" and double-click it or otherwise change it so that it reads 'false' instead of 'true'. 
The next time firefox is started (close it and open it back up or restart it - there's an addon called "restartless restart" which is amazing for this), the plugin container will be long gone.

Set the entry back to true to reenable the container, but if you're
prepared for the possibility of grief from crashing or you never bother
with flash things anyway, then perhaps this will be useful.

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https://bugs.launchpad.net/bugs/635023

Title:
  firefox plugin-container using 99% CPU - overheating and lock-up

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