** Changed in: firefox-3.0 (Ubuntu)
Status: Triaged => Invalid
** Package changed: firefox-3.5 (Ubuntu) => firefox (Ubuntu)
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https://bugs.launchpad.net/bugs/38131
Title:
Firefox causes massive Xorg CPU usage
Status in The Mozilla Firefox Browser:
New
Status in “firefox” package in Ubuntu:
Triaged
Status in “firefox-3.0” package in Ubuntu:
Invalid
Bug description:
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Proposed workaround: use
Option "AccelMethod" "exa"
in device section of your xorg.conf
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Since installing Dapper Flight 6 last week, I've been plagued by an
extremely slow Firefox, though this problem was not present in my
previous Dapper install that had, at one point, been Breezy.
When running top, I've found that Xorg tends to take up 60%+ of the
CPU with the remaining percentage being devoted to Firefox, or
sometimes vice versa.
This prompted me to edit my xorg.conf.
I found that my default config file listed the Device Driver as 'nv'
instead of 'nvidia' as it always had been on my machine before I
installed Flight 6.
Reading advice in
https://launchpad.net/distros/ubuntu/+source/firefox/+bug/32561 ( also
prompted me to add MOZ_DISABLE_PANGO=1 to /etc/environment.
I don't report bugs very often, so I'm not sure on the policy of
providing a fix for a problem within the main bug report. :P
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