As suggested in this thread https://forum.ubuntu- fr.org/viewtopic.php?id=1989216 installing gtk2-engines seems to solve the problem on that machine running U14.04 with intel core i7 haswell graphics and no proprietary graphic driver.
But on the other machine running U14.04 with nvidia graphics and proprietary drivers, where Firefox 46 runs fine, there is no gtk2-engines installed. Is this i7 Haswell specific ? How gtk2-engine may help ? I also confirm U16.04 is not affected (on the haswell one) but now has proprietary driver (microcode firmware for intel CPU's from Intel microcode) which is not proposed on U14.04 -- 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/1576382 Title: Firefox 46 → display glitch Status in firefox package in Ubuntu: Confirmed Bug description: Hi, I have 3 computers running Ubuntu 14.04 On one of them Firefox 46 introduces glitches in display : http://www.hostingpics.net/viewer.php?id=801804Capturedu20160428171811.png http://www.hostingpics.net/viewer.php?id=181298Capturedu20160428192355.png This pc is core i7 with intel haswell graphics Safe-mode / no addons produces same glitches Default theme for Firefox (and for system, Unity environment) No other theme installed in Firefox. Glitches appear sometimes after several minutes. --- AddonCompatCheckDisabled: False ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC1D0c: alexandra 8440 F...m pulseaudio /dev/snd/pcmC1D0p: alexandra 8440 F...m pulseaudio /dev/snd/controlC1: alexandra 8440 F.... pulseaudio /dev/snd/controlC0: alexandra 8440 F.... pulseaudio BuildID: 20160425115534 Channel: Unavailable CurrentDesktop: Unity DistroRelease: Ubuntu 14.04 Extensions: extensions.sqlite corrupt or missing ForcedLayersAccel: False IfupdownConfig: auto lo iface lo inet loopback IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) IpRoute: default via 192.168.1.254 dev eth0 proto static 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.100 metric 1 Locales: extensions.sqlite corrupt or missing Package: firefox 46.0+build5-0ubuntu0.14.04.2 PackageArchitecture: amd64 PrefSources: prefs.js ProcVersionSignature: Ubuntu 4.2.0-34.39~14.04.1-generic 4.2.8-ckt4 Profiles: Profile0 (Default) - LastVersion=46.0/20160425115534 (In use) RelatedPackageVersions: totem-mozilla 3.10.1-1ubuntu4 rhythmbox-mozilla 3.0.2-0ubuntu2 icedtea-7-plugin 1.5.3-0ubuntu0.14.04.1 adobe-flashplugin 1:20160407.1-0ubuntu0.14.04.1 browser-plugin-freshplayer-pepperflash 0.3.5-1~webupd8~trusty~2 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no RunningIncompatibleAddons: False Tags: third-party-packages trusty Themes: extensions.sqlite corrupt or missing Uname: Linux 4.2.0-34-generic x86_64 UpgradeStatus: Upgraded to trusty on 2014-05-15 (714 days ago) UserGroups: adm lpadmin netdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/17/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1007 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z87-C dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1007:bd05/17/2013:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ87-C:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: All Series dmi.product.version: System Version dmi.sys.vendor: ASUS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1576382/+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
