Ubuntu
firefox package

  1. Bug #38131
  2. Comment #10

Comment 10 for bug 38131

Revision history for this message
ian marcinkowski (ianmarcinkowski) wrote : [Dapper] Firefox causes massive Xorg CPU usage

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 <a href="https://launchpad.net/distros/ubuntu/+source/firefox/+bug/32561/+index">Bug #32561</a> 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