The bug remains.
** Package changed: firefox-3.0 (Ubuntu) => firefox (Ubuntu)
** Also affects: firefox (Fedora)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/383435
Title:
Firefox lags when scrolling
Status in firefox package in Ubuntu:
Confirmed
Status in firefox package in Fedora:
New
Bug description:
Binary package hint: firefox-3.0
Scrolling lags badly in Firefox. It's not a consistent problem, but
seems to build the longer I keep the browser open. After a day or so,
I can spin my scroll wheel ten clicks... Wait... Nothing happens...
Start to wonder if it's hung... And then the ten scroll events
happen. The delay is very inconsistent, which from a usability
standpoint is worse. Instead of just knowing it lags, it has feel
like I mistakenly tried to scroll with the wrong window focused. My
guess is that there's some garbage collection or something that
happens periodically, and if I scroll during it, it has to wait until
the *whatever* job is done.
I keep saying scrolling here because it's the most obvious case, but
I'm pretty sure all browser operations freeze during the lag time.
This started under 8.10, and seemed to get better when I first
switched to 9.04, but it's happening all the time again now. When it
gets really bad, Flash videos start having problems too where they'll
freeze for several seconds, much like the scrolling freezes. Clicking
links to open pages also seems to be affected, again having some
sporadic lag. Sadly, Firefox on my old P3-600 with 8.04 feels more
responsive than on 9.04 on my Athlon64-5200.
If I exit when it's really bad, Firefox consumes 100% CPU for 10 to 20
seconds after the window closes, but before the process exits. The
time seems to be related to how much trouble I'm having with the lag.
It'd be awfully interesting to know what it's cleaning up during that
time, but I don't know how to find out.
I have a workaround that seems to make it somewhat better: kill
firefox, delete localstore.rdf, restart. This seems to work better
than just restarting, but it's really hard to do side by side
comparisons, since it takes a while to build up to the nasty lag.
I've gone through many gyrations of deleting my profile and
reimporting my bookmarks, disabling plugins, and removing Flash, all
to no avail.
ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: nvidia
Package: firefox-3.0 3.0.10+nobinonly-0ubuntu0.9.04.1
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: firefox-3.0
Uname: Linux 2.6.28-11-generic i686
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