I managed to solve my issue: I found a passive DisplayPort to HDMI adapter that works (the colors on the TV are as expected).
But I still think that there is a software issue, or an issue that ca be solved with software, since with the exact same hardware the colors are fine with certain software. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1586787 Title: Wrong colors on external TV Status in xorg package in Ubuntu: New Bug description: Hi, On a Lenovo Thinkpad T420, with an Intel Core i5-2520M CPU and integrated graphics, when using a Samsung UE40J5200AW 40in TV with a DisplayPort to HDMI adapter and an HDMI cable, the colors are very wrong on the TV. This happens on a brand new Ubuntu 16.04 installation made from scratch, and it does not happen when I boot from a Linux Mint 17.3 "Rosa" Cinnamon 64-bit live DVD. So same laptop, same adapter, same cable, same TV, and the colors are fine on the TV in this case (Mint live DVD). Also, when switching the laptop with a Dell running Windows 8.1 (so the same adapter, cable, and TV are used), the colors are again fine. I have attached a picture that shows the laptop screen in front of the TV screen with the display mirrored. So both screens should look the same in the picture. But it looks like only the white color is the same, while the rest of the colors are very different. Thanks for your help, Alin. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.1 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 Date: Sun May 29 17:47:11 2016 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo 2nd Generation Core Processor Family Integrated Graphics Controller [17aa:21ce] InstallationDate: Installed on 2016-05-06 (22 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: LENOVO 4236BH1 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro noprompt persistent quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/05/2013 dmi.bios.vendor: LENOVO dmi.bios.version: 83ET76WW (1.46 ) dmi.board.asset.tag: Not Available dmi.board.name: 4236BH1 dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr83ET76WW(1.46):bd07/05/2013:svnLENOVO:pn4236BH1:pvrThinkPadT420:rvnLENOVO:rn4236BH1:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4236BH1 dmi.product.version: ThinkPad T420 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12.2+16.04.20160415-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Sun May 29 17:45:29 2016 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 738 vendor LGD xserver.version: 2:1.18.3-1ubuntu2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1586787/+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
