just noticed also this question and answers on Ask Ubuntu - http://askubuntu.com/questions/584922/how-do-i-fix-fonts-not-rendering- and-missing-letters
seems like the issue is most definitely the version of intel graphics driver ubuntu is using. Some people have "fixed" this by changing to the pure intel graphics driver. Like others, I noticed that using unity-tweak-tool and changing the text scaling factor from 1.0 to 1.15 together within (in firefox) increasing the font size via ctrl+ mouse scroll up fixed these issues in Unity. -- 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/1342675 Title: Random characters in screen text suddenly disappear Status in xserver-xorg-video-intel package in Ubuntu: Confirmed Bug description: While using my machine, characters suddenly disappear. No character in particular, not in any single application in particular, and copying and pasting the text preserves the characters. Scrolling the text out of view and back into view doesn't affect the missing characters. Switching between applications may change the affected characters (possibly due to a redraw operation?) Restarting often solves the problem, but it comes back after a couple of hours working. I've attached a screenshot to show you the problem. I do believe this is different than the bug relating to garbled characters in a number of ways 1. I don't ever get garbled characters 2. Scrolling out/in of the affected text doesn't re-show the missing characters, even navigating inside the application has no effect. 3. It's global, I can even see it on Desktop icon names ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xserver-xorg-video-intel 2:2.99.910-0ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-30.55-generic 3.13.11.2 Uname: Linux 3.13.0-30-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Wed Jul 16 14:48:25 2014 DistUpgraded: 2014-06-29 16:38:35,552 DEBUG enabling apt cron job DistroCodename: trusty DistroVariant: ubuntu DkmsStatus: virtualbox, 4.3.10, 3.11.0-24-generic, x86_64: installed virtualbox, 4.3.10, 3.13.0-30-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller]) Subsystem: LG Electronics, Inc. Device [1854:0803] InstallationDate: Installed on 2014-03-28 (109 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: LG Electronics R590-G.ARIBE8 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-30-generic root=UUID=79c2f2b5-87cb-44d0-83fa-d99e73bb0a73 ro quiet splash vt.handoff=7 SourcePackage: xserver-xorg-video-intel UpgradeStatus: Upgraded to trusty on 2014-06-29 (16 days ago) dmi.bios.date: 01/06/2010 dmi.bios.vendor: INSYDE dmi.bios.version: QL4L3I51 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: Base Board Product Name dmi.board.vendor: Intel Corp. dmi.board.version: Base Board Version dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 1 dmi.chassis.vendor: Chassis Manufacturer dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnINSYDE:bvrQL4L3I51:bd01/06/2010:svnLGElectronics:pnR590-G.ARIBE8:pvr05:rvnIntelCorp.:rnBaseBoardProductName:rvrBaseBoardVersion:cvnChassisManufacturer:ct1:cvrChassisVersion: dmi.product.name: R590-G.ARIBE8 dmi.product.version: 05 dmi.sys.vendor: LG Electronics version.compiz: compiz 1:0.9.11.1+14.04.20140701-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.52-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1 version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2 xserver.bootTime: Wed Jul 16 01:52:06 2014 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 560 vendor LGD xserver.version: 2:1.15.1-0ubuntu2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1342675/+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
