I am currently running Ubuntu 13.04 and today I updated to firefox 22. Afterwards, the firefox process would jump between ~5% and 99%. Often it would gray out and then return. When trying to perform any sort of action (select an item from a firefox drop-down menu), try to navigate to a web site or search google using the search bar, there would be a delay of a few seconds before I would see the menu or see the cursor in the location bar or search bar. I verified that network.dns.disableIPV6 was set to true and turned off hardware acceleration, but the performance problems did not go away. I logged out and logged back in but that didn't help either. I eventually downgraded to firefox 20 and firefox performed as expected.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: firefox 22.0+build2-0ubuntu0.13.04.2
ProcVersionSignature: Ubuntu 3.8.0-26.38-generic 3.8.13.2
Uname: Linux 3.8.0-26-generic x86_64
NonfreeKernelModules: wl
AddonCompatCheckDisabled: False
ApportVersion: 2.9.2-0ubuntu8.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ubergic 4262 F.... pulseaudio
BuildID: 20130627161625
Channel: Unavailable
Date: Wed Jul 10 19:29:57 2013
DefaultProfilePrefSources:
prefs.js
[Profile]/extensions/{2fa4ed95-0317-4c6a-a74c-5f3e3912c1f9}/defaults/preferences/ybookmarks.js
ForcedLayersAccel: False
IfupdownConfig:
auto lo
iface lo inet loopback
# iface eth1 inet dhcp
# wireless-essid nancyblue
# wireless-mode Managed
InstallationDate: Installed on 2011-07-23 (717 days ago)
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
IpRoute:
default via 10.1.1.1 dev eth1 proto static
10.1.1.0/24 dev eth1 proto kernel scope link src 10.1.1.91 metric 9
169.254.0.0/16 dev eth1 scope link metric 1000
172.16.162.0/24 dev vmnet1 proto kernel scope link src 172.16.162.1
192.168.12.0/24 dev vmnet8 proto kernel scope link src 192.168.12.1
MarkForUpload: True
Profile1PrefSources: prefs.js
Profiles:
Profile0 (Default) - LastVersion=20.0/20130417085609 (Out of date)
Profile1 - LastVersion=20.0/20130329030352 (Out of date)
RelatedPackageVersions:
gnome-shell 3.6.3.1-0ubuntu6
totem-mozilla 3.6.3-0ubuntu6
rhythmbox-mozilla 2.98-0ubuntu5
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: Upgraded to raring on 2013-04-29 (71 days ago)
dmi.bios.date: 10/16/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A16
dmi.board.name: 0U990C
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA16:bd10/16/2008:svnDellInc.:pnInspiron1525:pvr:rvnDellInc.:rn0U990C:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Inspiron 1525
dmi.sys.vendor: Dell Inc.
Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. There have been many changes in Ubuntu since that time you reported the bug and your problem may have been fixed with some of the updates. It would help us a lot if you could test it on a currently supported Ubuntu version.
When you test it and it is still an issue, kindly upload the updated logs by running only once:
apport-collect 1199703
and any other logs that are relevant for this particular issue.