As I reported upstream (mozilla-bugs:1005501), the bug is due to xserver-xorg-video-intel, and was fixed somewhere between 2:2.99.910 and 2:2.99.911 (c.f. freedesktop:79165). The bug is therefore already fixed in 14.10, so it should be fixed in 14.04 once the 14.04.2 point release is published (i.e. "xserver-xorg-video-intel-lts-utopic" becomes available on trusty-updates) on 5 February 2015. I don't see a 12.04.6 point release scheduled, however, so if 12.04.5 is affected, upgrading to 14.04.2 may be necessary. Aside from using ppa:xorg-edgers/ppa (dangerous) and xserver-xorg-video-intel-lts-utopic on ppa:canonical-x/x-staging (which doesn't look meant for general or even troubleshooting use), I otherwise don't know how to obtain a packaged fix ahead of time for 14.04 or at all for 12.04. Maybe someone at Ubuntu-X can help.
** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Fix Committed ** Bug watch added: freedesktop.org Bugzilla #79165 https://bugs.freedesktop.org/show_bug.cgi?id=79165 ** Also affects: xserver-xorg-video-intel via https://bugs.freedesktop.org/show_bug.cgi?id=79165 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1314924 Title: Adressbox Entries unreadable: Grey/Black Mask overlaying text Status in X.org xf86-video-intel: Unknown Status in firefox package in Ubuntu: Confirmed Status in xserver-xorg-video-intel package in Ubuntu: Fix Committed Bug description: Labtop: Asus M2400, 512MB RAM, Pentium M "Banias" using "forcepae". OS: Xubuntu 14.04, all updates up to May 1, 2014. Application: Firefox 29, version "29.0+build1-0ubuntu0.14.04.2" Updated Firefox to Firefox 29 by automatic software update. Restarted firefox, now all the HTTP address entries in the address box are unreadable; it looks like they are masked by a black or grey/black mask. This independent of address and website. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: firefox 29.0+build1-0ubuntu0.14.04.2 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic i686 AddonCompatCheckDisabled: False ApportVersion: 2.14.1-0ubuntu3 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: tschmid 1708 F.... pulseaudio lightdm 5509 F.... pulseaudio BuildID: 20140428194004 Channel: Unavailable CurrentDesktop: XFCE Date: Thu May 1 10:24:14 2014 ExecutablePath: /usr/lib/firefox/firefox ForcedLayersAccel: False IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2014-04-19 (11 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140416.2) IpRoute: default via 192.168.254.10 dev eth1 proto static 192.168.254.0/24 dev eth1 proto kernel scope link src 192.168.254.100 metric 9 NoProfiles: True ProcEnviron: LANGUAGE=de_DE PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=de_DE.UTF-8 SHELL=/bin/bash PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no RunningIncompatibleAddons: False SourcePackage: firefox UpgradeStatus: No upgrade log present (probably fresh install) WifiSyslog: dmi.bios.date: 03/08/2004 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0208 dmi.board.name: M2N dmi.board.vendor: ASUSTeK Computer Inc. dmi.board.version: 1.0 dmi.chassis.asset.tag: ATN12345678901234567 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK Computer Inc. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0208:bd03/08/2004:svnASUSTeKComputerInc.:pnM2N:pvr1.0:rvnASUSTeKComputerInc.:rnM2N:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0: dmi.product.name: M2N dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK Computer Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1314924/+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