Unsolved
5 Posts
0
377
November 29th, 2022 05:00
P4317Q DDM /SetActiveInput mDP or DP2 not working (HDMI1 works)
Hello all!
I have got a P4317Q (manufactured 2020) with M2C104 (even reflashed it, somehow this wiped the manufatured date and service tag, not shown any more in DDM 1.0)
I can't get DDM /setActiveInput to miniDP working. Tried
ddm.exe /setActiveInput DP2 -> not changing inputs
ddm.exe /setActiveInput mDP -> not changing inputs
ddm.exe /setActiveInput DP -> changes to DP input, works
ddm.exe /setActiveInput HDMI1-> changes to HDMI1 input, works
Please help
No Events found!


David Ringhofer
5 Posts
0
January 6th, 2023 00:00
Has someone experienced the same? Is there a solution? Seems that Input-Switching via DDM doesn't work consistently.
David Ringhofer
5 Posts
0
January 6th, 2023 01:00
I've found something in an older thread: https://www.dell.com/community/Monitors/u2415-wont-switch-displays-when-using-DDM/m-p/5098241
❯ .\ddm.exe /SetControl 60 10 // switches to mDP correctly
❯ .\ddm.exe /SetActiveInput mDP // doesn't work on the P4317Q
❯ .\ddmcmd.exe /GetActiveInput
GetActiveInput = mDP
GetActiveInput does show mDP als active input after switching with SetControl.
DDM version 1.56.0.2110
swamped207
4 Apprentice
•
426 Posts
0
January 6th, 2023 02:00
"SetControl 60 10" and "SetActiveInput mDP" are the exact same command, with one exception: "SetActiveInput" asks the FW if it supports mDP first, where "SetControl" does not.
Restart DDM, issue a "SetActiveInput mDP" command, and then save the DDM diagnostic report, posting the log here. While holding down the SHIFT key, right click on the DDM system tray icon and select "Save diagnostic report" from the popup menu.
David Ringhofer
5 Posts
0
January 6th, 2023 02:00
I've issued the following 3 commands after restarting DDM:
Here is the corresponding diagnostic log:
swamped207
4 Apprentice
•
426 Posts
0
January 6th, 2023 16:00
I may be misunderstanding, but it seems like what you are trying to do, is begin from a PC running DDM and connected via mDP, then use DDM to switch the active input to DP, and then use DDM to switch the active input back to mDP. If that's the case, that's just not possible with the P4317. You can only reliably issue commands using DDM over the active input. With newer Dell models you can issue commands over an inactive input but not the P4317.
1. PCa connected via mDP to P43
2. PCb connected via DP to P43
To switch from mDP to DP, you must issue the command from PCa.
To switch from DP to mDP, you must issue the command from PCb
(Again, I may have misunderstood the issue, but I checked a P43 and "SetActiveInput mDP" works correctly.)
David Ringhofer
5 Posts
0
January 7th, 2023 00:00
@swamped207, thanks - I was hoping that I could issue the command via the inactive input. I had asked our IT department for the newer P4320Qs but got unfortunately got two P4317Qs, which on paper look very similiar.