i915: Secondary screen shows a bluish color shift. White turns into a turquoise.

[Alberto Cangialosi]

The process with this pc and my tv monitor (an old Sonoko) always takes alot with Ubuntu. It takes even a little bit with Windows on the same device, but with this distro (the only one I've ever tried, 19.04) it can even takes minutes and even a counter intuitive setup.
I tried alot of days ago and I hope it can show up in the logs.
Furthermore the screen no 2, when finally start working, has a color shift. A blue-ish shift. From the color the mouse cursor it seems white turns into a turquoise.
I decided to report it now because I thought it was the old tv fault, but today I decide to plug a new laptop on that and, even if Windows colors are a little bit off, it's not at the same level as this issue

lsb_release -rd

Description: Ubuntu 19.04
Release: 19.04

apt-cache policy pkgname

N: Impossibile trovare il pacchetto pkgname

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: xorg 1:7.7+19ubuntu12
ProcVersionSignature: Ubuntu 5.0.0-17.18-generic 5.0.8
Uname: Linux 5.0.0-17-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
BootLog: Error: [Errno 13] Permesso negato: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Wed Jun 26 00:24:28 2019
DistUpgraded: Fresh install
DistroCodename: disco
DistroVariant: ubuntu
DkmsStatus:
 bcmwl, 6.30.223.271+bdcom, 5.0.0-16-generic, x86_64: installed
 bcmwl, 6.30.223.271+bdcom, 5.0.0-17-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Dell Mobile 4 Series Chipset Integrated Graphics Controller [1028:0277]
   Subsystem: Dell Mobile 4 Series Chipset Integrated Graphics Controller [1028:0277]
InstallationDate: Installed on 2019-06-11 (14 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
MachineType: Dell Inc. Latitude E4200
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-17-generic root=UUID=3530e372-e9e5-454c-915e-8fa98dfff972 ro quiet splash vt.handoff=1
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/18/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A05
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA05:bd12/18/2008:svnDellInc.:pnLatitudeE4200:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude E4200
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.97-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 19.0.2-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.4-1ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.1-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20180925-2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

[Daniel van Vugt (vanvugt)]

This sounds like likely to be a hardware fault. If not a faulty screen then a faulty connection or faulty cable. Please try replacing the cable.

It seems there was no secondary screen connected when you opened this bug. Can you tell us what type of connector you are using?

[Alberto Cangialosi (tebkanlo)]

Hello, I was using an old VGA cable I found at home. I probably wasn't connected while reporting the bug, sorry.
But I also thought it could be an hardware fault, until I found out it can somehow be fixed.
During my last tries I decide to retry with the second pc (which was the one kind of fine using Windows) but this time I booted with an Ubuntu Live Boot usb drive (same distro 19.04 used during the install).
To my surprised:
-the black screen minutes-long wait that I experience in the first pc was non-existent
-the blue-ish filter effect was still there but I randomly fixed.

I tweaked with the background using the preinstalled wallpapers. After changing from the original Disco Dingo to the white DD pic I switched back to the original DD pic...
To my surprise this simply fixed the issue in the Live Boot (LOL).
SOoo I tried that in the first pc, with no results (what a pity)

[Daniel van Vugt (vanvugt)]

Please try turning OFF the colour profile switch in:
  Settings > Devices > Colour

[Alberto Cangialosi (tebkanlo)]

That did the work, thanks, and even almosr immediatly. It now shows the secondary screen with a decent hue. Thanks for spending some time with a noob like me.

If I recall correctly I opened that setting menu when already plugged to the tv, probably for this reason it showed just the alternative settings (wish it was possible to alsways possible to se primary and alternative at once) . Lucky for me I followed your advice before pluggin the VGA.

Another little thing is about
   Settings > Devices > Screen
Can't it let me choose if mirroring, extending or cloning the pc screen on the TV? I think I have seen that option before

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 938751, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.