Public bug reported:

I have two displays and have Night Light mode enabled with Sunset to
Sunrise setting (tried to change it into Manual, but this didn't make
any difference).

It was perfectly OK some time before, but now only display #2 is started
with the Night Light mode switched on.

I can work around it: go to the Display Settings, try to switch into
non-native mode for Display #1 and it switched into it with Night Light
enabled. Then choose not to keep settings and it returns into native
resolution with Night Light on.

Not all changes help to switch the mode on though. For instance,
mirroring screen doesn't switch it on.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu5
ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
Uname: Linux 4.15.0-10-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: 
'/proc/driver/nvidia/gpus/0000:01:00.0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module  390.42  Sat Mar  3 04:10:22 
PST 2018
 GCC version:  gcc version 7.3.0 (Ubuntu 7.3.0-5ubuntu1)
.proc.driver.nvidia.warnings.fbdev:
 Your system is not currently configured to drive a VGA console
 on the primary VGA device. The NVIDIA Linux graphics driver
 requires the use of a text-mode VGA console. Use of other console
 drivers including, but not limited to, vesafb, may result in
 corruption and stability problems, and is not supported.
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: GNOME
Date: Wed Mar 14 21:31:45 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
DkmsStatus:
 bbswitch, 0.8, 4.15.0-10-generic, x86_64: installed
 nvidia, 390.42, 4.15.0-10-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 NVIDIA Corporation GP102 [GeForce GTX 1080 Ti] [10de:1b06] (rev a1) (prog-if 
00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. GP102 [GeForce GTX 1080 Ti] [1043:85e5]
InstallationDate: Installed on 2018-02-05 (37 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180204)
MachineType: ASUS All Series
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-10-generic.efi.signed 
root=UUID=68661197-00b4-4652-9c8f-2ef606012d2d ro quiet splash vt.handoff=1
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/17/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0702
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z97-K/USB 3.1
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr0702:bd03/17/2016:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ97-K/USB3.1:rvrRevX.0x:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: ASUS MB
dmi.product.name: All Series
dmi.product.version: System Version
dmi.sys.vendor: ASUS
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.90-1
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc4-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.0~rc4-1ubuntu3
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic has-workaround regression reproducible ubuntu

-- 
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/1755885

Title:
  Night Light won't turn on after start on display #1

Status in xorg package in Ubuntu:
  New

Bug description:
  I have two displays and have Night Light mode enabled with Sunset to
  Sunrise setting (tried to change it into Manual, but this didn't make
  any difference).

  It was perfectly OK some time before, but now only display #2 is
  started with the Night Light mode switched on.

  I can work around it: go to the Display Settings, try to switch into
  non-native mode for Display #1 and it switched into it with Night
  Light enabled. Then choose not to keep settings and it returns into
  native resolution with Night Light on.

  Not all changes help to switch the mode on though. For instance,
  mirroring screen doesn't switch it on.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: xorg 1:7.7+19ubuntu5
  ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
  Uname: Linux 4.15.0-10-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  .proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: 
'/proc/driver/nvidia/gpus/0000:01:00.0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  390.42  Sat Mar  3 04:10:22 
PST 2018
   GCC version:  gcc version 7.3.0 (Ubuntu 7.3.0-5ubuntu1)
  .proc.driver.nvidia.warnings.fbdev:
   Your system is not currently configured to drive a VGA console
   on the primary VGA device. The NVIDIA Linux graphics driver
   requires the use of a text-mode VGA console. Use of other console
   drivers including, but not limited to, vesafb, may result in
   corruption and stability problems, and is not supported.
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
  BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME
  Date: Wed Mar 14 21:31:45 2018
  DistUpgraded: Fresh install
  DistroCodename: bionic
  DistroVariant: ubuntu
  DkmsStatus:
   bbswitch, 0.8, 4.15.0-10-generic, x86_64: installed
   nvidia, 390.42, 4.15.0-10-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   NVIDIA Corporation GP102 [GeForce GTX 1080 Ti] [10de:1b06] (rev a1) (prog-if 
00 [VGA controller])
     Subsystem: ASUSTeK Computer Inc. GP102 [GeForce GTX 1080 Ti] [1043:85e5]
  InstallationDate: Installed on 2018-02-05 (37 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180204)
  MachineType: ASUS All Series
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-10-generic.efi.signed 
root=UUID=68661197-00b4-4652-9c8f-2ef606012d2d ro quiet splash vt.handoff=1
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/17/2016
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0702
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: Z97-K/USB 3.1
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr0702:bd03/17/2016:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ97-K/USB3.1:rvrRevX.0x:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.family: ASUS MB
  dmi.product.name: All Series
  dmi.product.version: System Version
  dmi.sys.vendor: ASUS
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.90-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc4-1ubuntu3
  version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.0~rc4-1ubuntu3
  version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20171229-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

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