Hi 

My U2518D monitor is not responding to Dell Display Manager DDM. I am connecting from Lenovo L380. I updated both Intel display drivers, Dell U2518D driver and also monitor Firmware.  No Luck. I have 3 other Dell monitors connected to laptop (2 directly  & 2 using Targus "displaylink" docking station; total 4). Of the other 3 Dell monitors, DDM is connecting to 2 of them, the 3rd one is too old, so it is not supported.

Now this newer U2518D, why this is not responding ? I connected this U2518D to laptop directly via HDMI

(of the other 2 monitors DDM is successfully talking with, one is directly connected to laptop using USB-C to DisplayPort and the other is connected  via Targus docking station)

Below is DDM Log message

Diagnostic Report, generated 1/2/2021 (10.0.17763)
Copyright (c) 1995-2021, EnTech Taiwan.
Version = 1.51.0.2021
OS = 10.0.17763.2 x64
Mechanism = 3
Account = Standard
Command line = "C:\Program Files (x86)\Dell\Dell Display Manager\ddm.exe"
////////////////////////////////////////
Configuration settings:
DriverError = Dell U2518D=Intel
AutoRestoreWindowLayout = 0x00000000
GlassBorder.DELD0D2.JD5SDM2 = 0x00000100
AppScan.DELA0EC.4K8X78C209HL = 0x00000004
AppScan.DELD0D2.JD5SDM2 = 0x00000004
DELA0EC = 0x00000001
FW.DELA0EC.4K8X78C209HL = 0x00004102
DELD0D2 = 0x00000001
FW.DELD0D2.JD5SDM2 = 0x00001101
FW.DELA021.C953676728VL = 0x00001601
LastRC = ExpandConstant = Invalid command
EApolicy = 2000 2000 2000 2000 2000 2000
LastCheck = 0x0000ACA6
EnumErrorCount = 0x00000000
HintShown = 0x00000001
////////////////////////////////////////
10:19:01.864...Log opened
10:19:01.872...WinOS = 17763
10:19:01.962...LanguageID = 00000409 00000409 00000409
10:19:01.976...Build = 1.51.0.2021
10:19:01.978...Windows handles = 00010248 000101D6 0001024A
10:19:01.980...OS monitor sleep timeout value = 1200 ms.
10:19:01.980...Applied DPI = 110-110
10:19:01.981...VM = 0
10:19:01.981...Registered DDM popup hotkey = Shift+Ctrl+D 6044
10:19:01.982...Registered EA layout MRU hotkey = Shift+Ctrl+Home 6024
10:19:01.982...Registered application window hotkey = Shift+Ctrl+Ins 602D
10:19:01.988...Remote asset management = 1
10:19:01.989...Remote registry service state = 4
10:19:02.083...WMI service state (unless firewalled) = 1
10:19:02.284...DMA = 3
10:19:02.356...Starting enumeration
10:19:02.938...4. DELD0D2.JD5SDM2 on DisplayLink USB Device
10:19:02.939......Monitor model = Dell S2419H
10:19:02.939......Monitor assignment = 1
10:19:02.940......Adapter name = \\.\DISPLAY4
10:19:02.940......Monitor name = Generic PnP Monitor
10:19:02.940......Vendor ID = 17E9
10:19:02.941......GPU driver = DisplayLink 9.3.3147.0
10:19:02.942......Flags = 00000001.00000003
10:19:02.942......Display tag = 960280D2
10:19:02.942......Monitor handle = 00010124
10:19:02.943......Monitor screen area = 3840,-105 x 5760,975 1920x1080
10:19:02.943......Monitor work area = 3840,-105 x 5760,975 1920x1080
10:19:02.943......Monitor scaling factor = 100%
10:19:02.944......Raw EDID = 00FFFFFFFFFFFF0010ACD2D04C475930291C010380351E78EE2195A9544E9C260F5054A54B00714F8180A9C0D1C00101010101010101023A801871382D40582C45000F282100001E000000FF004A443553444D320A2020202020000000FC0044454C4C205332343139480A20000000FD00384C1E5311000A2020202020200196
10:19:03.011......VCP10 = 00640046
10:19:03.012......OS device handle = 00010124.00000000
10:19:03.013......Capabilities string = (prot(monitor)type(lcd)model(s2419h)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(11 12 ) 62 ac ae b2 b6 c6 c8 c9 cc(02 0a 03 04 08 09 0d 06 ) d6(01 04 05) dc(00 03 05 ) df e0 e1 e2(00 1d 02 04 0e 12 14 ) f0(0c ) f1 f2 fd)mswhql(1)asset_eep(40)mccs_ver(2.1)) (cached)
10:19:03.313......Firmware string = 13C101
10:19:03.314......Configuration = FFFF000B.FF0063.1C29
10:19:03.316......Model year = FY19
10:19:03.316......Opcodes supported = 02,04,05,08,10,12,14,16,18,1A,52,60,62,AC,AE,B2,B6,C6,C8,C9,CC,D6,DC,DF,E0,E1,E2,F0,F1,F2,FD
10:19:03.428......Timing = 67.60 kHz (+), 60.10 Hz (+)
10:19:03.430......Status = 0140000D
10:19:03.439...5. DELA021.C953676728VL on DisplayLink USB Device
10:19:03.439......Monitor model = Dell 2007FP
10:19:03.440......Monitor assignment = 2
10:19:03.440......Adapter name = \\.\DISPLAY5
10:19:03.441......Monitor name = Generic PnP Monitor
10:19:03.441......Vendor ID = 17E9
10:19:03.442......GPU driver = DisplayLink 9.3.3147.0
10:19:03.443......Flags = 00000001.00000003
10:19:03.443......Display tag = A6488020
10:19:03.443......Monitor handle = 004503E3
10:19:03.444......Monitor screen area = 3840,975 x 5440,2175 1600x1200
10:19:03.444......Monitor work area = 3840,975 x 5440,2175 1600x1200
10:19:03.445......Monitor scaling factor = 100%
10:19:03.446......Raw EDID = 00FFFFFFFFFFFF0010AC21A04C5638321711010380291F78EEEE91A3544C99260F5054A54B008180A940714F01010101010101010101483F403062B0324040C013006F131100001E000000FF0043393533363736373238564C0A000000FC0044454C4C203230303746500A20000000FD00384C1E5311000A20202020202000A6
10:19:03.513......VCP10 = 00640032
10:19:03.514......OS device handle = 004503E3.00000000
10:19:03.515......Capabilities string = type(lcd) vcp(02 04 05 06 08 0b 0c 10 12 14(02 04 05 08) 16 18 1a 1d 1e 20 30 60 6c 6e 70 ac ae b2 b6 c0 c6 c8 c9 ca d6(01 02 03 04) df) mpu(1.02) mswhql(1) asset_eep(40) mccs_ver(2.0) (cached)
10:19:03.758......Error: GetVCPFDh: 0xC0262584.004503E3 = The monitor does not support the specified VCP code
10:19:03.759......Firmware string = 21x201
10:19:03.759......Configuration = 0.62.1117
10:19:03.760......Discarding unsupported display: DELA021.C953676728VL on DisplayLink USB Device
10:19:03.824......Status = 0140000D
10:19:04.002...2. DELA0EC.4K8X78C209HL on Intel(R) UHD Graphics 620
10:19:04.003......Monitor model = Dell U2718Q
10:19:04.003......Monitor assignment = 2
10:19:04.003......Adapter name = \\.\DISPLAY2
10:19:04.004......Monitor name = Generic PnP Monitor
10:19:04.004......Vendor ID = 8086
10:19:04.006......GPU driver = igdumdim64 26.20.100.7812
10:19:04.008......Flags = 00000005.00000003
10:19:04.008......Display tag = DB4DB5EC
10:19:04.009......Monitor handle = 0043075B
10:19:04.009......Monitor screen area = 0,0 x 3840,2160 3840x2160
10:19:04.009......Monitor work area = 0,0 x 3671,2160 3671x2160
10:19:04.010......Monitor scaling factor = 100%
10:19:04.010......Raw EDID = 00FFFFFFFFFFFF0010ACECA04C483930311C0104B53D23783EEE95A3544C99260F5054A54B00714F8180A9C0A940D1C0E100D10001014DD000A0F0703E8030203500615D2100001A000000FF00344B3858373843323039484C0A000000FC0044454C4C205532373138510A20000000FD0031560A8936000A20202020202001DB
10:19:04.071......VCP10 = 00640041
10:19:04.074......OS device handle = 0043075B.00000000
10:19:04.074......Capabilities string = (prot(monitor)type(lcd)model(u2718q)cmds(01 02 03 07 0c e3 f3)vcp(02 04 05 08 10 12 14(04 05 06 08 09 0b 0c) 16 18 1a 52 60( 11 0f 10) aa(01 02 03 04) ac ae b2 b6 c6 c8 c9 d6(01 04 05) dc(00 03 05) df e0 e1 e2(00 02 04 0c 0d 0f 10 11 13 14 1d) f0(00 0c) f1 f2 fd)mccs_ver(2.1)mswhql(1)) (cached)
10:19:04.351......Firmware string = M2B102
10:19:04.353......Configuration = B000B.FFFF0062.1C31
10:19:04.356......Model year = FY18
10:19:04.357......Opcodes supported = 02,04,05,08,10,12,14,16,18,1A,52,60,AA,AC,AE,B2,B6,C6,C8,C9,D6,DC,DF,E0,E1,E2,F0,F1,F2,FD
10:19:04.465......Timing = 133.30 kHz (+), 59.99 Hz (+)
10:19:04.468......Status = 0140001D
10:19:04.471...Skipping unsupported device MONITOR\LEN4094\{4d36e96e-e325-11ce-bfc1-08002be10318}\0001
10:19:04.478......Status = 0140001D
10:19:04.486...3. DEL413C.0WG2J79QAD7L on Intel(R) UHD Graphics 620
10:19:04.487......Monitor model = Dell U2518D
10:19:04.487......Monitor assignment = 3
10:19:04.488......Adapter name = \\.\DISPLAY3
10:19:04.488......Monitor name = U2518D (HDMI)
10:19:04.488......Vendor ID = 8086
10:19:04.490......GPU driver = igdumdim64 26.20.100.7812
10:19:04.491......Flags = 00000001.00000003
10:19:04.491......Display tag = E256803C
10:19:04.492......Monitor handle = 00830305
10:19:04.492......Monitor screen area = -2560,735 x 0,2175 2560x1440
10:19:04.493......Monitor work area = -2560,735 x 0,2175 2560x1440
10:19:04.493......Monitor scaling factor = 100%
10:19:04.494......Raw EDID = 00FFFFFFFFFFFF0010AC3C414C374441271B010380371F78EEEE95A3544C99260F5054A54B00714FA9408180D1C00101010101010101565E00A0A0A029503020350029372100001A000000FF00305747324A3739514144374C0A000000FC0044454C4C205532353138440A20000000FD00384C1E5A19000A20202020202001E2
10:19:04.699......Error: communicating via DDC/CI (0xC0262582) = An error occurred while transmitting data to the device on the I2C bus
10:19:04.700......Error: failed to obtain output mask from display driver
10:19:07.402......Error: communicating via DDC/CI (0xC0262582) = An error occurred while transmitting data to the device on the I2C bus
10:19:07.403......Error: failed to obtain output mask from display driver
10:19:12.613......Error: communicating via DDC/CI (0xC0262582) = An error occurred while transmitting data to the device on the I2C bus
10:19:12.616......Error: failed to obtain output mask from display driver
10:19:12.618......Discarding unsupported display: DEL413C.0WG2J79QAD7L on Intel(R) UHD Graphics 620
10:19:12.633......Check the OSD, cables, and the Intel 26.20.100.7812 display driver for DDC/CI support (0xC0262582)
10:19:12.652......Status = 0140001D
10:19:12.653...Ending enumeration
10:19:12.675...New=LEN4094.0001 DELA0EC.0056 DEL413C.0038 DELD0D2.0050 DELA021.0049
10:19:12.915...Non-rectagular Dell desktop: 0,-105 x 5760,2160 5760x2265 (#1)
10:19:12.976...Creating VCP table on DELA0EC.4K8X78C209HL
10:19:13.042......Opcode 0x12 = 00640046
10:19:13.149......Opcode 0x60 = 000E0F0F
10:19:13.260......Opcode 0xAA = 00FF0001
10:19:13.370......Opcode 0xE2 = 00FF0000
10:19:13.421...Creating VCP table on DELD0D2.JD5SDM2
10:19:13.497......Opcode 0x12 = 00640046
10:19:13.624......Opcode 0x60 = 12121212
10:19:13.794...Video power down timeout = 1200
10:19:13.827...Display powered ON
10:19:13.834...User session connect
10:19:13.879...Auto-saving window layout...
10:19:35.373...\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
10:19:35.373...Dump: Windows device enumeration
10:19:35.384...Display adapters:
10:19:35.387.....1.Targus USB3 DV4K DOCK w Power
10:19:35.387.....2.Targus USB3 DV4K DOCK w Power
10:19:35.388.....3.Intel(R) UHD Graphics 620
10:19:35.388...Monitors:
10:19:35.394.....1.Generic PnP Monitor
10:19:35.395.....2.Wide viewing angle & High density FlexView Display 1920x1080
10:19:35.395.....3.U2518D (HDMI)
10:19:35.395.....4.Generic PnP Monitor
10:19:35.395.....5.Generic PnP Monitor
10:19:35.395...Visible monitors = 5
10:19:35.396...1.DeviceName = \\.\DISPLAY1
10:19:35.396.....DeviceFlags = 00000001
10:19:35.396.....DeviceString = Intel(R) UHD Graphics 620
10:19:35.396.....DeviceID = PCI\VEN_8086&DEV_5917&SUBSYS_506C17AA&REV_07
10:19:35.396.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{F25EAC25-D41B-11E9-9E98-482AE34AB4E7}\0000
10:19:35.398.....a.MonitorName = \\.\DISPLAY1\Monitor0
10:19:35.398.......MonitorFlags = 00000003
10:19:35.398.......MonitorString = Wide viewing angle & High density FlexView Display 1920x1080
10:19:35.399.......MonitorID = MONITOR\LEN4094\{4d36e96e-e325-11ce-bfc1-08002be10318}\0001
10:19:35.399.......MonitorKey = \Registry\Machine\System\CurrentControlSet\Control\Class\{4d36e96e-e325-11ce-bfc1-08002be10318}\0001
10:19:35.400.......Raw EDID = 00FFFFFFFFFFFF0030AE944000000000051B0104A51D1178EA5390A658549F260E505400000001010101010101010101010101010101BC398018713828403020360026A51000001A362E8018713828403020360026A51000001A0000000F00D10930D109301E0A0009E55F07000000FE004E5631333346484D2D4E35410A00EF
10:19:35.402...2.DeviceName = \\.\DISPLAY2
10:19:35.402.....DeviceFlags = 00000005
10:19:35.403.....DeviceString = Intel(R) UHD Graphics 620
10:19:35.403.....DeviceID = PCI\VEN_8086&DEV_5917&SUBSYS_506C17AA&REV_07
10:19:35.403.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{F25EAC25-D41B-11E9-9E98-482AE34AB4E7}\0001
10:19:35.404.....a.MonitorName = \\.\DISPLAY2\Monitor0
10:19:35.405.......MonitorFlags = 00000003
10:19:35.405.......MonitorString = Generic PnP Monitor
10:19:35.405.......MonitorID = MONITOR\DELA0EC\{4d36e96e-e325-11ce-bfc1-08002be10318}\0056
10:19:35.405.......MonitorKey = \Registry\Machine\System\CurrentControlSet\Control\Class\{4d36e96e-e325-11ce-bfc1-08002be10318}\0056
10:19:35.406.......Raw EDID = 00FFFFFFFFFFFF0010ACECA04C483930311C0104B53D23783EEE95A3544C99260F5054A54B00714F8180A9C0A940D1C0E100D10001014DD000A0F0703E8030203500615D2100001A000000FF00344B3858373843323039484C0A000000FC0044454C4C205532373138510A20000000FD0031560A8936000A20202020202001DB
10:19:35.408...3.DeviceName = \\.\DISPLAY3
10:19:35.408.....DeviceFlags = 00000001
10:19:35.408.....DeviceString = Intel(R) UHD Graphics 620
10:19:35.408.....DeviceID = PCI\VEN_8086&DEV_5917&SUBSYS_506C17AA&REV_07
10:19:35.409.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{F25EAC25-D41B-11E9-9E98-482AE34AB4E7}\0002
10:19:35.411.....a.MonitorName = \\.\DISPLAY3\Monitor0
10:19:35.411.......MonitorFlags = 00000003
10:19:35.411.......MonitorString = U2518D (HDMI)
10:19:35.411.......MonitorID = MONITOR\DEL413C\{4d36e96e-e325-11ce-bfc1-08002be10318}\0038
10:19:35.411.......MonitorKey = \Registry\Machine\System\CurrentControlSet\Control\Class\{4d36e96e-e325-11ce-bfc1-08002be10318}\0038
10:19:35.412.......Raw EDID = 00FFFFFFFFFFFF0010AC3C414C374441271B010380371F78EEEE95A3544C99260F5054A54B00714FA9408180D1C00101010101010101565E00A0A0A029503020350029372100001A000000FF00305747324A3739514144374C0A000000FC0044454C4C205532353138440A20000000FD00384C1E5A19000A20202020202001E2
10:19:35.414...4.DeviceName = \\.\DISPLAY4
10:19:35.415.....DeviceFlags = 00000001
10:19:35.415.....DeviceString = DisplayLink USB Device
10:19:35.415.....DeviceID = USB\VID_17E9&PID_6002&REV_3000&MI_00
10:19:35.415.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{E2BE90B1-870C-11EA-9EBD-84FDD15E6CB1}\0000
10:19:35.417.....a.MonitorName = \\.\DISPLAY4\Monitor0
10:19:35.417.......MonitorFlags = 00000003
10:19:35.418.......MonitorString = Generic PnP Monitor
10:19:35.418.......MonitorID = MONITOR\DELD0D2\{4d36e96e-e325-11ce-bfc1-08002be10318}\0050
10:19:35.418.......MonitorKey = \Registry\Machine\System\CurrentControlSet\Control\Class\{4d36e96e-e325-11ce-bfc1-08002be10318}\0050
10:19:35.419.......Raw EDID = 00FFFFFFFFFFFF0010ACD2D04C475930291C010380351E78EE2195A9544E9C260F5054A54B00714F8180A9C0D1C00101010101010101023A801871382D40582C45000F282100001E000000FF004A443553444D320A2020202020000000FC0044454C4C205332343139480A20000000FD00384C1E5311000A2020202020200196
10:19:35.421...5.DeviceName = \\.\DISPLAY5
10:19:35.421.....DeviceFlags = 00000001
10:19:35.421.....DeviceString = DisplayLink USB Device
10:19:35.422.....DeviceID = USB\VID_17E9&PID_6002&REV_3000&MI_00
10:19:35.422.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{E2BE90B1-870C-11EA-9EBD-84FDD15E6CB1}\0001
10:19:35.424.....a.MonitorName = \\.\DISPLAY5\Monitor0
10:19:35.424.......MonitorFlags = 00000003
10:19:35.424.......MonitorString = Generic PnP Monitor
10:19:35.424.......MonitorID = MONITOR\DELA021\{4d36e96e-e325-11ce-bfc1-08002be10318}\0049
10:19:35.424.......MonitorKey = \Registry\Machine\System\CurrentControlSet\Control\Class\{4d36e96e-e325-11ce-bfc1-08002be10318}\0049
10:19:35.425.......Raw EDID = 00FFFFFFFFFFFF0010AC21A04C5638321711010380291F78EEEE91A3544C99260F5054A54B008180A940714F01010101010101010101483F403062B0324040C013006F131100001E000000FF0043393533363736373238564C0A000000FC0044454C4C203230303746500A20000000FD00384C1E5311000A20202020202000A6
10:19:35.427...6.DeviceName = \\.\DISPLAY6
10:19:35.428.....DeviceFlags = 00000000
10:19:35.428.....DeviceString = DisplayLink USB Device
10:19:35.428.....DeviceID = USB\VID_17E9&PID_6002&REV_3000&MI_00
10:19:35.428.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{E2BE90B1-870C-11EA-9EBD-84FDD15E6CB1}\0002
10:19:35.430...7.DeviceName = \\.\DISPLAY7
10:19:35.431.....DeviceFlags = 00000000
10:19:35.431.....DeviceString = DisplayLink USB Device
10:19:35.431.....DeviceID = USB\VID_17E9&PID_6002&REV_3000&MI_00
10:19:35.431.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{E2BE90B1-870C-11EA-9EBD-84FDD15E6CB1}\0003
10:19:35.433...Total number of monitors enumerated = 5
10:19:35.433...\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
10:19:35.433...Dumping VCP table on DELA0EC.4K8X78C209HL
10:19:35.489......Opcode 0x02 = 00020001
10:19:35.595......Opcode 0x10 = 00640041
10:19:35.702......Opcode 0x12 = 00640046
10:19:35.808......Opcode 0x14 = 000C0005
10:19:35.927......Opcode 0x16 = 00640064
10:19:36.044......Opcode 0x18 = 00640064
10:19:36.163......Opcode 0x1A = 00640064
10:19:36.273......Opcode 0x52 = 00FF0000
10:19:36.379......Opcode 0x60 = 000E0F0F
10:19:36.489......Opcode 0xAA = 00FF0001
10:19:36.608......Opcode 0xAC = 000208B4
10:19:36.728......Opcode 0xAE = 0000176F
10:19:36.851......Opcode 0xB2 = 00080001
10:19:36.958......Opcode 0xB6 = 00050003
10:19:37.068......Opcode 0xC6 = FFFF45CC
10:19:37.178......Opcode 0xC8 = 00005605
10:19:37.297......Opcode 0xC9 = FFFF4102
10:19:37.410......Opcode 0xD6 = 00FF0001
10:19:37.523......Opcode 0xDC = 00FF0000
10:19:37.642......Opcode 0xDF = 00FF0201
10:19:37.757......Opcode 0xE2 = 00FF0000
10:19:37.871......Opcode 0xF0 = 00FF0000
10:19:37.985......Opcode 0xF1 = 000B000B
10:19:38.098......Opcode 0xF2 = FF000000
10:19:38.209......Opcode 0xFD = FFFF0062
10:19:38.260......VCP table dumped
10:19:38.260...Dumping VCP table on DELD0D2.JD5SDM2
10:19:38.329......Opcode 0x02 = 00FF0001
10:19:38.450......Opcode 0x10 = 00640046
10:19:38.568......Opcode 0x12 = 00640046
10:19:38.683......Opcode 0x14 = 000C0005
10:19:38.812......Opcode 0x16 = 00640055
10:19:38.939......Opcode 0x18 = 0064005C
10:19:39.065......Opcode 0x1A = 00640064
10:19:39.189......Opcode 0x52 = 00FF0060
10:19:39.314......Opcode 0x60 = 12121212
10:19:39.434......Opcode 0x62 = 00640064
10:19:39.561......Opcode 0xAC = 00010810
10:19:39.680......Opcode 0xAE = FFFF177A
10:19:39.795......Opcode 0xB2 = 00010001
10:19:39.912......Opcode 0xB6 = 00050003
10:19:40.025......Opcode 0xC6 = FFFF45CC
10:19:40.142......Opcode 0xC8 = 00252209
10:19:40.265......Opcode 0xC9 = FFFF1101
10:19:40.381......Opcode 0xCC = 000D0002
10:19:40.495......Opcode 0xD6 = 00050001
10:19:40.610......Opcode 0xDC = 00050000
10:19:40.724......Opcode 0xDF = FFFF0201
10:19:40.840......Opcode 0xE2 = 00FF0000
10:19:40.956......Opcode 0xF0 = 00FF0000
10:19:41.072......Opcode 0xF1 = FFFF000B
10:19:41.188......Opcode 0xF2 = 00FF0000
10:19:41.303......Opcode 0xFD = 00FF0063
10:19:41.354......VCP table dumped