U2913WM, after Windows update, not seen by DDM

Question

Hello, I have this monitor since it was introduced to our market and never had any issues with it until now. I am using mDP to DP cable, DDC/CI enabled, DP1.2 disabled, GPU is AMD Radeon HD7950. Since last Windows 10 update my monitor is not detected by Dell Display Manager and also Dell Display Driver says it cannot find Dell monitor. I can force install the driver, but it doesn't solve DDM. Everything was working fine before the update. I tried uninstalling display drivers, monitor drivers, DDM but nothing helped. Friend of mine who is on the same Windows 10 and with AMD Radeon HD7970 + U2518D does not have this problem. Dell Display Driver installer says this:   The following connected monitors have been detected: Dell Plug and Play Monitor - DEL408B&VEN_1002&DEV_679A&SUBSYS_254C1458 Drivers for the following monitors have been found: Dell U2913WM (Analog) - DEL4088 Dell U2913WM (Digital) - DEL4089 Dell U2913WM (HDMI) - DEL408A Dell U2913WM (DP) - DEL408B Drivers for the following connected monitor can be installed: None Please connect your monitor before running this program.

swamped207 · Accepted Answer

I understand that the DDM RC here works with 19H1.

Mary G · Answer

Check this out-- https://www.dell.com/support/home/us/en/04/product-support/product/dell-u2913wm/drivers You  need the 2016 updated driver.

petomorvay · Answer

Thanks, that is actually the driver that I already have and after uninstalling, installer displays that message ..

swamped207 · Answer

If you use TeamViewer, make sure the update didn't leave a virtual monitor behind: uninstall TV, reboot, see if it fixes the problem, and them install TV again. If its not TV related, go into Device Manager, uninstall everything *under* 'Monitors' and 'Display Adapters' (not the categories themselves!), and then do a 'Scan for hardware changes' from the Action menu.

petomorvay · Answer

I had TeamViewer before and without issues, but for now I uninstalled it, also drivers for GPU and monitor. After restart the GPU driver was installed automatically and monitor stayed at Generic PNP monitor, installer still doesn't recognise it so I think there is the same detection mechanism in installer and DDM as they both don't work :D

swamped207 · Answer

Close DDM if its running, then restart it and go into the DDM service menu to generate a diagnostic report: while holding down the SHIFT key, right-click on the DDM system tray icon and select 'Save diagnostic report'. It should show why the monitor isn't recognized.

petomorvay · Answer

Output of DDM, I see nothing suspicious, Monitor is found, also DEL408B is identified .. Spoiler Diagnostic Report, generated 2. 1. 2019 (10.0.18290) Copyright (c) 1995-2018, EnTech Taiwan. Version = 1.40.0.1936 OS = 10.0.18290.2 x64 Mechanism = 3 Account = Standard Command line = 'C:\Program Files (x86)\Dell\Dell Display Manager\ddm.exe' //////////////////////////////////////// LastCheck = 0x0000A9C8 HintShown = 0x00000001 AutoRestoreWindowLayout = 0x00000000 EnumErrorCount = 0x00000000 //////////////////////////////////////// 22:29:17.000...Log opened 22:29:17.090...LanguageID = 00000409 00000409 0000041B 22:29:17.098...Build = 1.40.0.1936 22:29:17.098...Windows handles = 0001012A 000100CA 0001012E 22:29:17.099...OS monitor sleep timeout value = 600 ms. 22:29:17.099...Applied DPI = 96-96 22:29:17.099...VM = 0 22:29:17.296...Starting enumeration 22:29:17.359...Ending enumeration 22:29:17.363...New=DEL408B&VEN_1002&DEV_679A&SUBSYS_254C1458.0000 22:29:17.428...Video power down timeout = 600 22:29:17.429...User session connect 22:29:17.429...Display powered ON 22:29:22.432...Refreshing screen object 22:29:29.293...\\\\\\\\\\\\\\\\\\\\ 22:29:29.293...Dump: complete Windows device enumeration 22:29:29.294...1.DeviceName = \.\DISPLAY1 22:29:29.294.....DeviceFlags = 00080005 22:29:29.295.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.295.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.295.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0000 22:29:29.297.....a.MonitorName = \.\DISPLAY1\Monitor0 22:29:29.297.......MonitorFlags = 00000003 22:29:29.298.......MonitorString = Dell U2913WM (DP) 22:29:29.299.......MonitorID = MONITOR\DEL408B&VEN_1002&DEV_679A&SUBSYS_254C1458\{4d36e96e-e325-11ce-bfc1-08002be10318}\0000 22:29:29.300.......MonitorKey = \Registry\Machine\System\CurrentControlSet\Control\Class\{4d36e96e-e325-11ce-bfc1-08002be10318}\0000 22:29:29.301...2.DeviceName = \.\DISPLAY2 22:29:29.302.....DeviceFlags = 00080000 22:29:29.303.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.303.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.304.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0001 22:29:29.306...3.DeviceName = \.\DISPLAY3 22:29:29.307.....DeviceFlags = 00080000 22:29:29.308.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.308.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.309.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0002 22:29:29.311...4.DeviceName = \.\DISPLAY4 22:29:29.312.....DeviceFlags = 00080000 22:29:29.313.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.313.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.314.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0003 22:29:29.316...5.DeviceName = \.\DISPLAY5 22:29:29.317.....DeviceFlags = 00080000 22:29:29.318.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.318.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.319.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0004 22:29:29.321...6.DeviceName = \.\DISPLAY6 22:29:29.323.....DeviceFlags = 00080000 22:29:29.324.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.325.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.326.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0005 22:29:29.329...7.DeviceName = \.\DISPLAY7 22:29:29.330.....DeviceFlags = 00080000 22:29:29.331.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.332.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.333.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0006 22:29:29.335...8.DeviceName = \.\DISPLAY8 22:29:29.337.....DeviceFlags = 00080000 22:29:29.338.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.339.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.340.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0007 22:29:29.342...Total number of monitors enumerated = 1 22:29:29.343...\\\\\\\\\\\\\\\\\\\\ Diagnostic Report, generated 2. 1. 2019 (10.0.18290) Copyright (c) 1995-2018, EnTech Taiwan. Version = 1.40.0.1936 OS = 10.0.18290.2 x64 Mechanism = 3 Account = Standard Command line = 'C:\Program Files (x86)\Dell\Dell Display Manager\ddm.exe' //////////////////////////////////////// LastCheck = 0x0000A9C8 HintShown = 0x00000001 AutoRestoreWindowLayout = 0x00000000 EnumErrorCount = 0x00000000 //////////////////////////////////////// 22:29:17.000...Log opened 22:29:17.090...LanguageID = 00000409 00000409 0000041B 22:29:17.098...Build = 1.40.0.1936 22:29:17.098...Windows handles = 0001012A 000100CA 0001012E 22:29:17.099...OS monitor sleep timeout value = 600 ms. 22:29:17.099...Applied DPI = 96-96 22:29:17.099...VM = 0 22:29:17.296...Starting enumeration 22:29:17.359...Ending enumeration 22:29:17.363...New=DEL408B&VEN_1002&DEV_679A&SUBSYS_254C1458.0000 22:29:17.428...Video power down timeout = 600 22:29:17.429...User session connect 22:29:17.429...Display powered ON 22:29:22.432...Refreshing screen object 22:29:29.293...\\\\\\\\\\\\\\\\\\\\ 22:29:29.293...Dump: complete Windows device enumeration 22:29:29.294...1.DeviceName = \.\DISPLAY1 22:29:29.294.....DeviceFlags = 00080005 22:29:29.295.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.295.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.295.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0000 22:29:29.297.....a.MonitorName = \.\DISPLAY1\Monitor0 22:29:29.297.......MonitorFlags = 00000003 22:29:29.298.......MonitorString = Dell U2913WM (DP) 22:29:29.299.......MonitorID = MONITOR\DEL408B&VEN_1002&DEV_679A&SUBSYS_254C1458\{4d36e96e-e325-11ce-bfc1-08002be10318}\0000 22:29:29.300.......MonitorKey = \Registry\Machine\System\CurrentControlSet\Control\Class\{4d36e96e-e325-11ce-bfc1-08002be10318}\0000 22:29:29.301...2.DeviceName = \.\DISPLAY2 22:29:29.302.....DeviceFlags = 00080000 22:29:29.303.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.303.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.304.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0001 22:29:29.306...3.DeviceName = \.\DISPLAY3 22:29:29.307.....DeviceFlags = 00080000 22:29:29.308.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.308.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.309.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0002 22:29:29.311...4.DeviceName = \.\DISPLAY4 22:29:29.312.....DeviceFlags = 00080000 22:29:29.313.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.313.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.314.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0003 22:29:29.316...5.DeviceName = \.\DISPLAY5 22:29:29.317.....DeviceFlags = 00080000 22:29:29.318.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.318.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.319.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0004 22:29:29.321...6.DeviceName = \.\DISPLAY6 22:29:29.323.....DeviceFlags = 00080000 22:29:29.324.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.325.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.326.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0005 22:29:29.329...7.DeviceName = \.\DISPLAY7 22:29:29.330.....DeviceFlags = 00080000 22:29:29.331.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.332.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.333.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0006 22:29:29.335...8.DeviceName = \.\DISPLAY8 22:29:29.337.....DeviceFlags = 00080000 22:29:29.338.....DeviceString = AMD Radeon HD 7900 Series 22:29:29.339.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:29:29.340.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0007 22:29:29.342...Total number of monitors enumerated = 1 22:29:29.343...\\\\\\\\\\\\\\\\\\\\

petomorvay · Answer

I see nothing suspicious Diagnostic Report, generated 2. 1. 2019 (10.0.18290) Copyright (c) 1995-2018, EnTech Taiwan. Version = 1.40.0.1936 OS = 10.0.18290.2 x64 Mechanism = 3 Account = Standard Command line = 'C:\Program Files (x86)\Dell\Dell Display Manager\ddm.exe' //////////////////////////////////////// LastCheck = 0x0000A9C8 HintShown = 0x00000001 AutoRestoreWindowLayout = 0x00000000 EnumErrorCount = 0x00000000 //////////////////////////////////////// 22:14:53.846...Log opened 22:14:53.953...LanguageID = 00000409 00000409 0000041B 22:14:53.961...Build = 1.40.0.1936 22:14:53.962...Windows handles = 0001012A 000100CA 0001012E 22:14:53.962...OS monitor sleep timeout value = 600 ms. 22:14:53.963...Applied DPI = 96-96 22:14:53.963...VM = 0 22:14:54.162...Starting enumeration 22:14:54.229...Ending enumeration 22:14:54.233...New=DEL408B&VEN_1002&DEV_679A&SUBSYS_254C1458.0010 22:14:54.304...Video power down timeout = 600 22:14:54.305...User session connect 22:14:54.305...Display powered ON 22:14:59.309...Refreshing screen object 22:15:04.827...\\\\\\\\\\\\\\\\\\\\ 22:15:04.828...Dump: complete Windows device enumeration 22:15:04.828...1.DeviceName = \.\DISPLAY1 22:15:04.829.....DeviceFlags = 00080005 22:15:04.830.....DeviceString = AMD Radeon HD 7900 Series 22:15:04.831.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:15:04.831.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0000 22:15:04.833.....a.MonitorName = \.\DISPLAY1\Monitor0 22:15:04.833.......MonitorFlags = 00000003 22:15:04.836.......MonitorString = Dell U2913WM (DP) 22:15:04.836.......MonitorID = MONITOR\DEL408B&VEN_1002&DEV_679A&SUBSYS_254C1458\{4d36e96e-e325-11ce-bfc1-08002be10318}\0010 22:15:04.837.......MonitorKey = \Registry\Machine\System\CurrentControlSet\Control\Class\{4d36e96e-e325-11ce-bfc1-08002be10318}\0010 22:15:04.839...2.DeviceName = \.\DISPLAY2 22:15:04.840.....DeviceFlags = 00080000 22:15:04.840.....DeviceString = AMD Radeon HD 7900 Series 22:15:04.840.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:15:04.841.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0001 22:15:04.842...3.DeviceName = \.\DISPLAY3 22:15:04.843.....DeviceFlags = 00080000 22:15:04.844.....DeviceString = AMD Radeon HD 7900 Series 22:15:04.844.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:15:04.845.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0002 22:15:04.846...4.DeviceName = \.\DISPLAY4 22:15:04.847.....DeviceFlags = 00080000 22:15:04.847.....DeviceString = AMD Radeon HD 7900 Series 22:15:04.848.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:15:04.848.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0003 22:15:04.850...5.DeviceName = \.\DISPLAY5 22:15:04.850.....DeviceFlags = 00080000 22:15:04.851.....DeviceString = AMD Radeon HD 7900 Series 22:15:04.851.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:15:04.852.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0004 22:15:04.855...6.DeviceName = \.\DISPLAY6 22:15:04.856.....DeviceFlags = 00080000 22:15:04.857.....DeviceString = AMD Radeon HD 7900 Series 22:15:04.857.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:15:04.858.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0005 22:15:04.861...7.DeviceName = \.\DISPLAY7 22:15:04.861.....DeviceFlags = 00080000 22:15:04.862.....DeviceString = AMD Radeon HD 7900 Series 22:15:04.863.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:15:04.864.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0006 22:15:04.867...8.DeviceName = \.\DISPLAY8 22:15:04.868.....DeviceFlags = 00080000 22:15:04.869.....DeviceString = AMD Radeon HD 7900 Series 22:15:04.870.....DeviceID = PCI\VEN_1002&DEV_679A&SUBSYS_254C1458&REV_00 22:15:04.871.....DeviceKey = \Registry\Machine\System\CurrentControlSet\Control\Video\{B4B49F81-0BBC-11E9-9B78-7824AF3DC758}\0007 22:15:04.873...Total number of monitors enumerated = 1 22:15:04.874...\\\\\\\\\\\\\\\\\\\\

swamped207 · Answer

It may just be a glitch in 19H1, which I'm sure you know is an early insider build. Definitely report the issue in the Microsoft Bug Bash which I think starts next week.

petomorvay · Answer

Dell Display Driver still doesn't find the monitor, but big thanks for the RC version of DDM after 2 hours idling in the system tray it suddenly detected the monitor and allows me to use all the features as before :)

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