Invisible CSS animations on Iceweasel consuming CPU

Thanks to bernat on #debian @ irc.debian.org for helping me track down this bug and devise a workaround.

When working on my wife’s netbook, I noticed that when idling on Facebook in iceweasel 24.3.0esr-1, the process was taking far too much CPU. I then retested on a wheezy system with the release iceweasel from mozilla.d.n, which at that time was 26, and I later upgraded to 27. Same problem there, too, on both versions. In fact, it seems the slowdown was amplified by the fact that I was running iceweasel in vnc4server, not the worlds most efficient X implementation.

Even with all these versions tested, I have yet to file a Debian bug, as I will need some time on a system where the slowdown is noticeable and I’m using a current Debian version. But I wanted to post now to give props to bernat for his help. If you think you have this issue, go read his article linked above, which contains the workaround.

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One thought on “Invisible CSS animations on Iceweasel consuming CPU”

  1. Thank you so much for linking this. I have been having this trouble with firefox for more than 2-3 months and I had to move away to chrome, since firefox was eating a lot resources and making by i7 CPU turbo activation every time I used firefox.

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