This problem is triggered in a variety of situations, but the root cause is that the interface needs to be separated from the engine, and take advantage of multi-threading.
** Summary changed: - Slow performance in Firefox interface, with delayed typing + Firefox interface is horribly laggy in a variety of situations, with delayed scrolling and typing ** Bug watch added: Mozilla Bugzilla #1225132 https://bugzilla.mozilla.org/show_bug.cgi?id=1225132 ** Changed in: firefox Remote watch: Mozilla Bugzilla #563887 => Mozilla Bugzilla #1225132 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/990997 Title: Firefox interface is horribly laggy in a variety of situations, with delayed scrolling and typing Status in Mozilla Firefox: Unknown Status in firefox package in Ubuntu: Triaged Bug description: Typing is extremely slow in typing in multiline fields. This happens with the text field on twitter, google+, blogger. Usually there's a big delay between typing and charachters to appear and cpu works a lot. Everything works fine with other browsers like chrome or opera. Disabling Javascript doesn't solve the issue even because withut js it's impossibile to load text fields that make a large use of it. My pc is equipped with a nvidia 8400gs m video chip. Let me know if more informations are needed. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: firefox 12.0+build1-0ubuntu0.12.04.1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14 Uname: Linux 3.2.0-24-generic-pae i686 NonfreeKernelModules: nvidia AddonCompatCheckDisabled: False AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu7 Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: skalka 1958 F.... pulseaudio BuildID: 20120423122624 Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf4500000 irq 48' Mixer name : 'Conexant CX20549 (Venice)' Components : 'HDA:14f15045,103c30cd,00100100' Controls : 18 Simple ctrls : 9 Channel: release Date: Sun Apr 29 12:02:14 2012 ForcedLayersAccel: False IfupdownConfig: auto lo iface lo inet loopback InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423) IpRoute: default via 192.168.1.1 dev wlan0 proto static 169.254.0.0/16 dev wlan0 scope link metric 1000 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.100 metric 2 ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash Profiles: Profile0 (Default) - LastVersion=12.0/20120423122624 (Running) RunningIncompatibleAddons: False SourcePackage: firefox UpgradeStatus: No upgrade log present (probably fresh install) WifiSyslog: Apr 29 09:11:28 Renato wpa_supplicant[910]: WPA: Group rekeying completed with 00:18:39:ab:f3:0e [GTK=CCMP] Apr 29 09:21:01 Renato kernel: [ 2004.363531] cfg80211: Found new beacon on frequency: 2467 MHz (Ch 12) on phy0 Apr 29 10:11:28 Renato wpa_supplicant[910]: WPA: Group rekeying completed with 00:18:39:ab:f3:0e [GTK=CCMP] Apr 29 10:32:47 Renato kernel: [ 6310.072316] process `skype' is using obsolete setsockopt SO_BSDCOMPAT Apr 29 11:11:28 Renato wpa_supplicant[910]: WPA: Group rekeying completed with 00:18:39:ab:f3:0e [GTK=CCMP] dmi.bios.date: 12/01/2008 dmi.bios.vendor: Phoenix dmi.bios.version: F.2E dmi.board.name: 30CE dmi.board.vendor: Wistron dmi.board.version: 80.52 dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenix:bvrF.2E:bd12/01/2008:svnHewlett-Packard:pnHPPaviliondv2500NotebookPc:pvrF.2E:rvnWistron:rn30CE:rvr80.52:cvnHewlett-Packard:ct10:cvrN/A: dmi.product.name: HP Pavilion dv2500 Notebook Pc dmi.product.version: F.2E dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/990997/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp