GNOME Bugzilla – Bug 783854
Night light isn't working on dual monitors
Last modified: 2017-12-07 15:38:14 UTC
I have the night light feature turned on. It only works on one of my monitors, but not both. This issue has been apparent from the moment I installed the OS and made no changes, so it's definitely not due to me breaking anything.
I am also using a fresh installation (Manjaro net install with Gnome) I have three monitors connected and it works on two of them. It does work on the primary screen (ID 2) and on the smaller secondary screen (ID 1). The Secondary screen with ID 3 is not affected by the Night Light. The arrangement of the monitors does not seem to change anything.
Some extra specs: OS: Ubuntu Gnome 17.04 64-bit RAM: 8GB CPU: Intel Core i5 4670K GPU: MSI Radeon R9 280X Let me know if you need anything else
And the monitors are both Acer G276HL
Same for me on Ubuntu Gnome 17.04 primary monitor dell xpx 9360 secondary LG monitor connected via displaylink over usb-c
I am having the identical issue that Yethiel is. Fresh install of Manjaro Gnome and a triple Acer monitor setup. Display ID's 1 and 2 work correctly but ID 3 does not respond whatsoever. System Information: CPU: Ryzen 7 1700 @ 4.2 Ghz RAM: 16 GB GSkill Trident-Z 3200 GPU: Asus GTX 1070 Strix Mobo: Asus Prime X370 Pro Please let me know if there are any logs specifications needed that i am unaware of. I'll be happy to post whatever is needed.
CPU: Intel Core i5-6500 GPU: Radeon RX 480 on mesa Monitors: 2 Acer S273HLAbmii via HDMI
CPU: Intel Core i7-6700k Monitors: 2 Acer R240HY over HDMI Output from `colormgr get-devices`: Object Path: /org/freedesktop/ColorManager/devices/xrandr_Acer_Technologies_R240HY_T4BAA0012400_steelcowboy_1000 Owner: steelcowboy Created: August 17 2017, 05:03:51 PM Modified: August 17 2017, 05:03:51 PM Type: display Enabled: Yes Embedded: No Model: R240HY Vendor: Acer Serial: T4BAA0012400 Seat: seat0 Scope: temp Colorspace: rgb Device ID: xrandr-Acer Technologies-R240HY-T4BAA0012400 Profile 1: icc-895743129084eb16504b3bdfc7b96c3a /home/steelcowboy/.local/share/icc/edid-cdf0533863023acc9ccc442d0d09368e.icc Profile 2: icc-5a745dd26e0c190116c14fd17fe69625 /var/lib/gdm/.local/share/icc/edid-cdf0533863023acc9ccc442d0d09368e.icc Profile 3: icc-73bcc52622b344ac90ce5bbb709d7c41 /var/lib/gdm/.local/share/icc/edid-2997566b03f5ca810f020a7720daed87.icc Metadata: XRANDR_name=HDMI-1 Metadata: OutputPriority=primary Metadata: OwnerCmdline=/usr/libexec/gsd-color Metadata: OutputEdidMd5=cdf0533863023acc9ccc442d0d09368e
(In reply to Jim Heald from comment #7) > CPU: Intel Core i7-6700k > Monitors: 2 Acer R240HY over HDMI > /org/freedesktop/ColorManager/devices/ > xrandr_Acer_Technologies_R240HY_T4BAA0012400_steelcowboy_1000 Just one monitor according to colord. What does the display panel in the control panel show?
It shows both monitors, and I can go in and change things for either monitor (set one as primary, or to mirror, etc)
I also am seeing a similar issue. 1 builtin display and 2 Acer R240HY monitors display in control panel shows 3 displays: Display 1: Built-in, nightlight works Display 2: Acer, connected via mini-displayport > DVI adapter, nightlight works Display 3: Acer, connected via VGA, nightlight does not work 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller]) Subsystem: Lenovo ThinkPad T440p Flags: bus master, fast devsel, latency 0, IRQ 30 Memory at c0000000 (64-bit, non-prefetchable) [size=4M] Memory at b0000000 (64-bit, prefetchable) [size=256M] I/O ports at 3000 [size=64] [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [a4] PCI Advanced Features Kernel driver in use: i915 Kernel modules: i915 (non-printer) output of `colormgr get-devices`: Object Path: /org/freedesktop/ColorManager/devices/xrandr_Undefined_R240HY_T4BAA0012400_henrys_1000 Owner: henrys Created: September 7 2017, 01:27:49 PM Modified: September 7 2017, 01:27:49 PM Type: display Enabled: Yes Embedded: No Model: R240HY Vendor: Undefined Serial: T4BAA0012400 Seat: seat0 Scope: temp Colorspace: rgb Device ID: xrandr-Undefined-R240HY-T4BAA0012400 Profile 1: icc-2cff89d4ebe4fc4022a581ddb15b0788 /var/lib/gdm/.local/share/icc/edid-16e12fb83ff638726a8df37d01bdf5d8.icc Metadata: XRANDR_name=HDMI1 Metadata: OutputPriority=primary Metadata: OwnerCmdline=/usr/lib/gnome-settings-daemon/gsd-color Metadata: OutputEdidMd5=644ebe89f75e3552f688a0f16908e8a4 Object Path: /org/freedesktop/ColorManager/devices/xrandr_Undefined_henrys_1000 Owner: henrys Created: September 7 2017, 01:27:49 PM Modified: September 7 2017, 01:27:49 PM Type: display Enabled: Yes Embedded: Yes Model: ThinkPad T440p Vendor: Lenovo Serial: unknown Seat: seat0 Scope: temp Colorspace: rgb Device ID: xrandr-Undefined Metadata: XRANDR_name=eDP1 Metadata: OutputPriority=secondary Metadata: OwnerCmdline=/usr/lib/gnome-settings-daemon/gsd-color Metadata: OutputEdidMd5=7ccb31c731ebf160b22f366c7572eadc
I've started noticing a problem like this. My main monitor is a 4K display attached via DisplayPort. Recently Night Light wouldn't work unless I had my secondary display (1080p monitor over HDMI) disabled. And just now, I didn't have Night Light again, so I tried disabling my secondary monitor, but that time it didn't fix it. I clicked to revert back to previous settings, and then Night Light came back. This may or may not be connected to this issue I posted: https://bugzilla.gnome.org/show_bug.cgi?id=788026
*** Bug 784855 has been marked as a duplicate of this bug. ***
*** This bug has been marked as a duplicate of bug 780167 ***
I can confirm the issue on Ubuntu 17.10 with a dual monitor setup. Night light only works on the primary monitor which has the ID 2. Night light is enabled for both in system settings, but I noticed switching night light on and of for the secondary monitor does not have any effect on this very monitor but rather on the primary monitor.