thanks luka, i added the proposed workaround to the summary, so other users can test and report their experience.
** Description changed: + + --- + Proposed workaround: use + + Option "AccelMethod" "exa" + + in device section of your xorg.conf + ---- + 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 ** Tags added: mt-eval -- Firefox causes massive Xorg CPU usage https://bugs.launchpad.net/bugs/38131 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
