S2718HN, DDM has no auto mode

If HDR is on, auto-mode is off.

I'm using the Standard profile on the monitor and HDR is off on Windows.

Just to confirm your S2718HN usage...

HDR On =
* Right click on Windows 10 Display Settings
* Switch HDR and advanced colors to On
* Open the S2718HN Menu- Color- Preset Modes
* Choose either Movie HDR or Game HDR

HDR Off =
* Right click on Windows 10 Display Settings
* Switch HDR and advanced colors to Off
* Open the S2718HN Menu- Color- Preset Modes
* Choose either Standard, ComfortView, Multimedia, Movie, Warm, Cool, Custom Color

Right. Thing is, in order to activate HDR on Windows, I have first to enable an HDR preset from the monitor otherwise there is no such option visible.

I did notice from the device manager on windows, that my monitor uses HDMI 1.4 connection when no HDR profile is selected and when selected it switches to HDMI 2.0.

So the order in those instructions was not correct =

HDR On =
* Open the S2718HN Menu- Color- Preset Modes
* Choose either Movie HDR or Game HDR
* Exit the monitor Menu
* Right click on Windows 10 Display Settings
* Switch HDR and advanced colors to On

HDR Off =
* Open the S2718HN Menu- Color- Preset Modes
* Choose either Standard, ComfortView, Multimedia, Movie, Warm, Cool, Custom Color
* Exit the monitor Menu
* Right click on Windows 10 Display Settings
* Switch HDR and advanced colors to Off

Still not sure why DDM auto-mode is not working. Go to non-HDR, standard preset mode. Then, press/hold the shift key, right click on the DDM system tray icon, select "Save diagnostic report" from the popup menu. Post it for swamped.

Here is the diagnostics txt as you asked me. I also added a screenshot to highlight the issue.

Diagnostic Report, generated 12-Dec-17 (10.0.16299)
Copyright (c) 1995-2017, EnTech Taiwan.
Version = 1.31.0.1897
OS = 10.0.16299.2 x64
Mechanism = 3
Account = Standard
Command line = "C:\Program Files (x86)\Dell\Dell Display Manager\ddm.exe"
////////////////////////////////////////
GridType.DELD0B5.KWY4Y72K0S5L{F1F5EA55-0CF2-4437-9813-A251EB1E1184} = 0x00000000
AutoRestoreWindowLayout = 0x00000000
PowerNap.DELD0B5.KWY4Y72K0S5L = 0x00000001
PCa.DELD0B5.KWY4Y72K0S5L = 0x00000011
PCb.DELD0B5.KWY4Y72K0S5L = 0x00000001
PC2.DELD0B5.KWY4Y72K0S5L = 0x00000001
GridType = 0x00000000
GridType.DELD0B5.KWY4Y72K0S5L = 0x00000000
AppScan.DELD0B6.KWY4Y72K0S5L = 0x00000004
DELD0B6 = 0x00000001
FW.DELD0B6.KWY4Y72K0S5L = 0x00000101
LastCheck = 0x0000A846
HintShown = 0x00000001
RestoreWindowLayout = 0x00000001
AppScan.DELD0B5.KWY4Y72K0S5L = 0x00000004
DELD0B5 = 0x00000001
FW.DELD0B5.KWY4Y72K0S5L = 0x00000101
EnumErrorCount = 0x00000000
Metro.DELD0B6.KWY4Y72K0S5L = 0x00000001
D3D.DELD0B6.KWY4Y72K0S5L = 0x00000004
Metro.DELD0B5.KWY4Y72K0S5L = 0x00000001
D3D.DELD0B5.KWY4Y72K0S5L = 0x00000004
DELD0B5.KWY4Y72K0S5L\C:\Program Files (x86)\Dell\Dell Display Manager\ddm.exe = 0x00000000
DELD0B5.KWY4Y72K0S5L\C:\Program Files (x86)\Dell\Dell Display Manager\ddm.d3d = 0x00000004
DELD0B5.KWY4Y72K0S5L\C:\Program Files (x86)\Microsoft Office\Root\Office16\OUTLOOK.EXE = 0x00000000
DELD0B5.KWY4Y72K0S5L\C:\Program Files (x86)\Microsoft Office\Root\Office16\WINWORD.EXE = 0x00000000
DELD0B5.KWY4Y72K0S5L\C:\Program Files (x86)\Microsoft Office\Root\Office16\POWERPNT.EXE = 0x00000001
DELD0B5.KWY4Y72K0S5L\C:\Program Files (x86)\Microsoft Office\Root\Office16\EXCEL.EXE = 0x00000000
DELD0B5.KWY4Y72K0S5L\C:\Program Files\Windows NT\Accessories\WORDPAD.EXE = 0x00000000
DELD0B5.KWY4Y72K0S5L\C:\Windows\system32\mspaint.exe = 0x00000001
DELD0B5.KWY4Y72K0S5L\C:\Program Files (x86)\Windows Media Player\wmplayer.exe = 0x00000002
DELD0B5.KWY4Y72K0S5L\C:\Program Files\Internet Explorer\iexplore.exe = 0x00000001
DELD0B5.KWY4Y72K0S5L\C:\Windows\SysNative\ApplicationFrameHost.exe*Microsoft Edge = 0x00000001
DELD0B5.KWY4Y72K0S5L\C:\Windows\SysNative\ApplicationFrameHost.exe = 0x00000001
////////////////////////////////////////
17:41:49.381...Log opened
17:41:50.276...LanguageID = 00000409 00000409 00000409
17:41:50.289...Build = 1.31.0.1897
17:41:50.289...Windows handles = 00010200 000101A2 00010206
17:41:50.289...OS monitor sleep timeout value = 0 ms.
17:41:50.289...Applied DPI = 96-96
17:41:50.290...VM = 0
17:41:50.329...Starting enumeration
17:41:50.390...1. DELD0B5.KWY4Y72K0S5L on NVIDIA GeForce GTX 1060 6GB
17:41:50.390......Monitor assignment = 1
17:41:50.390......Adapter name = \\.\DISPLAY1
17:41:50.391......Monitor name = DELL S2718HN/NX(Hdmi1.4)
17:41:50.391......Vendor ID = 10DE
17:41:50.392......GPU driver = c:\windows\system32\driverstore\filerepository\nv_dispi 23.21.13.8859
17:41:50.392......Flags = 08080005.00000003
17:41:50.392......Display tag = 900280B4
17:41:50.392......Monitor number = 1
17:41:50.392......Monitor handle = 00010001
17:41:50.392......Raw EDID = 00FFFFFFFFFFFF0010ACB5D04C355330081B0103803C2278EE6B65A9544B9C26105054A54B00714F8180A9C0D1C00101010101010101023A801871382D40582C450056502100001E000000FF004B5759345937324B3053354C0A000000FC005332373138484E2F4E580A2020000000FD00384C1E5311000A2020202020200190
17:41:50.450......VCP10 = 00640014
17:41:50.451......OS device handle = 00010001.00000000
17:41:50.451......Capabilities string = (prot(monitor)type(lcd)model(s2718hn/nx)cmds(01 02 03 07 0c e3 f3)vcp(02 04 05 08 10 12 14(05 08 0b 0c) 16 18 1a 52 60(01 11 ) ac ae b2 b6 c6 c8 c9 cc(02 0a 03 04 08 09 0d 06 ) d6(01 04 05) dc(00 02 03 05 ) df e0 e1 e2(00 1d 01 02 23 04 24 0e 12 14) f0(0c 31 32 ) f1 f2 fd)mswhql(1)asset_eep(40)mccs_ver(2.1)) (cached)
17:41:50.675......Configuration = FF000B.FF0063.1B08
17:41:50.676......Model = Dell S2718HN/NX
17:41:50.676......Model year = FY18
17:41:50.676......Capabilities = (prot(monitor)type(lcd)model(s2718hn/nx)cmds(01 02 03 07 0c e3 f3)vcp(02 04 05 08 10 12 14(05 08 0b 0c) 16 18 1a 52 60(01 11 ) ac ae b2 b6 c6 c8 c9 cc(02 0a 03 04 08 09 0d 06 ) d6(01 04 05) dc(00 02 03 05 ) df e0 e1 e2(00 1d 01 02 23 04 24 0e 12 14) f0(0c 31 32 ) f1 f2 fd)mswhql(1)asset_eep(40)mccs_ver(2.1)) (cached)
17:41:50.677......Opcodes supported = 02,04,05,08,10,12,14,16,18,1A,52,60,AC,AE,B2,B6,C6,C8,C9,CC,D6,DC,DF,E0,E1,E2,F0,F1,F2,FD
17:41:50.784......Timing = 83.90 kHz (+), 75.00 Hz (-)
17:41:50.784...Ending enumeration
17:41:50.785...New=DELD0B5.0001
17:41:50.788...Creating VCP table on DELD0B5.KWY4Y72K0S5L
17:41:50.846......Opcode 0x12 = 0064004B
17:41:50.954......Opcode 0x60 = 12121111
17:41:51.062......Opcode 0xC8 = 00111109
17:41:51.171......Opcode 0xE2 = 00FF0000
17:41:51.528...Video power down timeout = 0
17:41:51.531...User session connect
17:41:51.531...Display powered ON
18:53:04.677...User session disconnect
18:57:33.886...User session connect
18:57:38.882...Refreshing screen object
19:01:34.676...User session disconnect
19:02:34.900...Power conserve on DELD0B5.KWY4Y72K0S5L = 1
19:43:36.066...User session connect
19:47:39.057...User session disconnect
19:48:17.486...User session connect
19:48:18.840...Power restore on DELD0B5.KWY4Y72K0S5L = 0
19:53:02.051...User session disconnect
19:54:02.900...Power conserve on DELD0B5.KWY4Y72K0S5L = 1
19:59:11.862...User session connect
20:03:12.849...User session disconnect
20:17:55.391...User session connect
20:17:55.840...Power restore on DELD0B5.KWY4Y72K0S5L = 0
20:21:00.084...\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
20:21:00.085...Dump: complete Windows device enumeration
20:21:00.085...1.DeviceName = \\.\DISPLAY1
20:21:00.085.....DeviceFlags = 08080005
20:21:00.085.....DeviceString = NVIDIA GeForce GTX 1060 6GB
20:21:00.086.....DeviceID = PCI\VEN_10DE&DEV_1C03&SUBSYS_61613842&REV_A1
20:21:00.086.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{3C870D20-DDC5-11E7-B742-ACFDCEE6F950}\0000
20:21:00.087.....a.MonitorName = \\.\DISPLAY1\Monitor0
20:21:00.087.......MonitorFlags = 00000003
20:21:00.088.......MonitorString = DELL S2718HN/NX(Hdmi1.4)
20:21:00.088.......MonitorID = MONITOR\DELD0B5\{4d36e96e-e325-11ce-bfc1-08002be10318}\0001
20:21:00.088.......MonitorKey = \Registry\Machine\System\CurrentControlSet\Control\Class\{4d36e96e-e325-11ce-bfc1-08002be10318}\0001
20:21:00.089.......Raw EDID = 00FFFFFFFFFFFF0010ACB5D04C355330081B0103803C2278EE6B65A9544B9C26105054A54B00714F8180A9C0D1C00101010101010101023A801871382D40582C450056502100001E000000FF004B5759345937324B3053354C0A000000FC005332373138484E2F4E580A2020000000FD00384C1E5311000A2020202020200190
20:21:00.089...2.DeviceName = \\.\DISPLAY2
20:21:00.090.....DeviceFlags = 00080000
20:21:00.090.....DeviceString = NVIDIA GeForce GTX 1060 6GB
20:21:00.090.....DeviceID = PCI\VEN_10DE&DEV_1C03&SUBSYS_61613842&REV_A1
20:21:00.091.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{3C870D20-DDC5-11E7-B742-ACFDCEE6F950}\0001
20:21:00.091...3.DeviceName = \\.\DISPLAY3
20:21:00.091.....DeviceFlags = 00080000
20:21:00.092.....DeviceString = NVIDIA GeForce GTX 1060 6GB
20:21:00.092.....DeviceID = PCI\VEN_10DE&DEV_1C03&SUBSYS_61613842&REV_A1
20:21:00.092.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{3C870D20-DDC5-11E7-B742-ACFDCEE6F950}\0002
20:21:00.093...4.DeviceName = \\.\DISPLAY4
20:21:00.093.....DeviceFlags = 00080000
20:21:00.093.....DeviceString = NVIDIA GeForce GTX 1060 6GB
20:21:00.093.....DeviceID = PCI\VEN_10DE&DEV_1C03&SUBSYS_61613842&REV_A1
20:21:00.094.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{3C870D20-DDC5-11E7-B742-ACFDCEE6F950}\0003
20:21:00.094...5.DeviceName = \\.\DISPLAY5
20:21:00.094.....DeviceFlags = 00000000
20:21:00.095.....DeviceString = Intel(R) HD Graphics 4000
20:21:00.095.....DeviceID = PCI\VEN_8086&DEV_0162&SUBSYS_01621849&REV_09
20:21:00.095.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{347349F3-B685-11E7-B731-BC5FF4351337}\0000
20:21:00.096...6.DeviceName = \\.\DISPLAY6
20:21:00.096.....DeviceFlags = 00000000
20:21:00.096.....DeviceString = Intel(R) HD Graphics 4000
20:21:00.097.....DeviceID = PCI\VEN_8086&DEV_0162&SUBSYS_01621849&REV_09
20:21:00.097.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{347349F3-B685-11E7-B731-BC5FF4351337}\0001
20:21:00.097...7.DeviceName = \\.\DISPLAY7
20:21:00.098.....DeviceFlags = 00000000
20:21:00.098.....DeviceString = Intel(R) HD Graphics 4000
20:21:00.098.....DeviceID = PCI\VEN_8086&DEV_0162&SUBSYS_01621849&REV_09
20:21:00.098.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{347349F3-B685-11E7-B731-BC5FF4351337}\0002
20:21:00.099...Total number of monitors enumerated = 1
20:21:00.099...\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
20:21:00.099...Dumping VCP table on DELD0B5.KWY4Y72K0S5L
20:21:00.158......Opcode 0x02 = 00FF0001
20:21:00.268......Opcode 0x10 = 00640014
20:21:00.380......Opcode 0x12 = 0064004B
20:21:00.492......Opcode 0x14 = 000C0005
20:21:00.605......Opcode 0x16 = 00640064
20:21:00.714......Opcode 0x18 = 00640064
20:21:00.824......Opcode 0x1A = 00640064
20:21:00.933......Opcode 0x52 = 00FF00E2
20:21:01.042......Opcode 0x60 = 12121111
20:21:01.152......Opcode 0xAC = 000147BC
20:21:01.261......Opcode 0xAE = FFFF1D4C
20:21:01.370......Opcode 0xB2 = 00010001
20:21:01.481......Opcode 0xB6 = 00050003
20:21:01.592......Opcode 0xC6 = FFFF45CC
20:21:01.703......Opcode 0xC8 = 00111109
20:21:01.815......Opcode 0xC9 = FFFF0101
20:21:01.925......Opcode 0xCC = 000D0002
20:21:02.035......Opcode 0xD6 = 00050001
20:21:02.146......Opcode 0xDC = 00050000
20:21:02.257......Opcode 0xDF = FFFF0201
20:21:02.365......Opcode 0xE2 = 00FF0000
20:21:02.475......Opcode 0xF0 = 00FF0000
20:21:02.587......Opcode 0xF1 = 00FF000B
20:21:02.697......Opcode 0xF2 = 00FF0000
20:21:02.806......Opcode 0xFD = 00FF0063
20:21:02.858......VCP table dumped

Installed the version provided by swamped, unfortunately issue still persists.

You may need to wait for a new DDM release....

Maybe you can help me with my other issue. Whenever I activate HDR on my monitor and then on Windows everything looks very blurry as if the monitor is running a much lower resolution.

I checked with nVidia Control Panel and it HDR only works if I choose the 10bit or 12bit color depth and will refuse to go to HDR mode if I choose 8bit, which I know is what this monitor supports (6bit+FCR).

That is normal. Windows will always look bad if HDR is On. Windows itself is not HDR capable. Only dedicated HDR movies and games are HDR capable. Which is why when you go back to non-HDR windows desktop, you have to turn HDR Off.

Editing the registry seems to have fixed the issue, thanks a lot!

Weird thought that it is not available for my monitor, I wonder why honestly.

Its because on these models switching between HDR and SDR preset modes generates a hotplug event in Windows. Imagine you had set the default Windows desktop mode = Standard, and had Edge set to MovieHDR. Whenever you switched to or from Edge the screen would blank as a hotplug event was registered and processed by the OS.

With the IgnoreF1.7 switch, DDM substitutes Movie[SDR] and Game[SDR] presets where ever MovieHDR and GameHDR are auto-requested and the system is in SDR mode. Does that make sense?

Absolutely, though to me it would make more sense to have auto mode and give a warning about HDR modes but that's just me I guess, as a power user I would understand but probably other casual users might get confused by it.