Would like to add that this behavior can be seen not only in title bar. Some programs (gedit for example) and certain gtk elements (as drop-down menus) also has wrong subpixel antialiasing. Changing setting between "rgb" and "bgr" in "/org/gnome/settings-daemon/plugins/xsettings/rgba-order" makes no difference for cases mentioned above. But when changing to "vrgb" or "vbgr" there is visible difference. It looks like some internal gnome or gtk setting is hard set to "bgr" and doesn't get value of "rgb" in any case. Turning monitor and picture 180 degrees confirms this statement - the text is smooth and without any color edges. In attached screenshot you can see the difference between gedit and leafpad rendering the same text.
** Attachment added: "gedit on the left and leafpad on the right" https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1293497/+attachment/4093510/+files/Screenshot.png -- You received this bug notification because you are a member of DX Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1293497 Title: window title has incorrect subpixel antialias on high-dpi screen Status in “unity” package in Ubuntu: Confirmed Bug description: On a high-dpi screen, the window title has a blurry color-shift (especially noticeable in Radiance) which seems to be caused by sub- pixel aliasing. It is so big that it doesn't achieve the purpose of sub-pixel aliasing. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: unity 7.1.2+14.04.20140313-0ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-17.37-generic 3.13.6 Uname: Linux 3.13.0-17-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.13.3-0ubuntu1 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: Mon Mar 17 11:41:32 2014 DistUpgraded: Fresh install DistroCodename: trusty DistroVariant: ubuntu DkmsStatus: virtualbox, 4.3.6, 3.13.0-12-generic, x86_64: installed virtualbox, 4.3.6, 3.13.0-15-generic, x86_64: installed virtualbox, 4.3.6, 3.13.0-17-generic, x86_64: installed EcryptfsInUse: Yes GraphicsCard: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:3978] InstallationDate: Installed on 2014-02-02 (42 days ago) InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha amd64 (20140201) MachineType: LENOVO 20266 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-17-generic.efi.signed root=UUID=4bfb3686-b9f7-487d-81f6-eceb41097ad9 ro quiet splash vt.handoff=7 SourcePackage: unity UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/31/2013 dmi.bios.vendor: LENOVO dmi.bios.version: 76CN31WW dmi.board.asset.tag: No Asset Tag dmi.board.name: Yoga2 dmi.board.vendor: LENOVO dmi.board.version: 31900058STD dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Yoga 2 Pro dmi.modalias: dmi:bvnLENOVO:bvr76CN31WW:bd10/31/2013:svnLENOVO:pn20266:pvrLenovoYoga2Pro:rvnLENOVO:rnYoga2:rvr31900058STD:cvnLENOVO:ct10:cvrLenovoYoga2Pro: dmi.product.name: 20266 dmi.product.version: Lenovo Yoga 2 Pro dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.11+14.04.20140310-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.52-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu7 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 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: Mon Mar 17 09:43:54 2014 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 16970 vendor SDC xserver.version: 2:1.15.0-1ubuntu7 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1293497/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp
