[Bug 989997] [NEW] Font rendering errors in Firefox

[Michał Gołębiowski]

Public bug reported:

Under Ubuntu 12.04 I get frequently font rendering errors in Firefox (currently 12.0). The example site is:
http://www.spidersweb.pl/2012/04/ubuntu-12-04-oficjalnie-potezny-dopracowany-system.html
a screenshot from it showing the problem attached.

The problem for a specific tab is usually gone after marking buggy text
with a mouse, switching to another app and back etc. However, it's back
after reloading a page.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: firefox 12.0+build1-0ubuntu0.12.04.1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.0.1-0ubuntu6
Architecture: amd64
BuildID: 20120423122928
Date: Fri Apr 27 20:16:16 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
Profile0IncompatibleExtensions:
 Novell Moonlight - ID=moonlight at novell.com, Version=3.99.0.3, minVersion=1.5, maxVersion=3.6.*, Location=app-profile, Type=extension, Active=Yes
 Atlassian Bonfire - ID=bonfire-dev at atlassian.com, Version=1.8.5.0, minVersion=3.6, maxVersion=10.0.*, Location=app-profile, Type=extension, Active=Yes
 Firebug - ID=firebug at software.joehewitt.com, Version=1.9.1, minVersion=5.0, maxVersion=12.0a1, Location=app-profile, Type=extension, Active=Yes
 checkCompatibility - ID=check-compatibility at dactyl.googlecode.com, Version=1.3, minVersion=4.0, maxVersion=10.0a1, Location=app-profile, Type=extension, Active=Yes
Profile0UserJS:
 network.protocol-handler.external.picasa - true
 network.protocol-handler.app.picasa - /usr/bin/picasa
Profile1IncompatibleExtensions:
 Mozilla QA Companion - ID={667e9f3d-0096-4d2b-b171-9a96afbabe20}, Version=1.2.3, minVersion=3.0, maxVersion=12.*, Location=app-profile, Type=extension, Active=Yes
 Add-on Compatibility Reporter - ID=compatibility at addons.mozilla.org, Version=1.1, minVersion=3.5, maxVersion=14.0a1, Location=app-profile, Type=extension, Active=Yes
 Test Pilot - ID=testpilot at labs.mozilla.com, Version=1.2.1, minVersion=3.5, maxVersion=14.0a1, Location=app-profile, Type=extension, Active=Yes
Profile1UserJS:
 network.protocol-handler.external.picasa - true
 network.protocol-handler.app.picasa - /usr/bin/picasa
Profile2UserJS:
 network.protocol-handler.external.picasa - true
 network.protocol-handler.app.picasa - /usr/bin/picasa
Profiles:
 Profile0 - LastVersion=12.0/20120423122928 (Running)
 Profile1 - LastVersion=14.0a2/20120427042005 (Out of date)
 Profile2 - LastVersion=4.0.1/20110429090038 (Out of date)
 Profile3 - LastVersion=Safe Mode/Safe Mode (Out of date)
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise

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https://bugs.launchpad.net/bugs/989997

Title:
  Font rendering errors in Firefox

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