Public bug reported:
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
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug compiz-0.9 ubuntu xenial
** Attachment added: "Picture with the laptop screen in front of the TV with
the screen mirrored"
https://bugs.launchpad.net/bugs/1586787/+attachment/4672279/+files/IMG_20160529_172202.jpg
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https://bugs.launchpad.net/bugs/1586787
Title:
Wrong colors on external TV
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