After running the graphics driver update ([URL] the issue appears to have been resolved on our machines. If you are unable to install the update or the update does not work, a Dell Premium Support Plus rep said there was a workaround using registry keys. The following registry keys would need to be added: Location: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000]Registry entry to create: "DPMstDscDisable"=dword:00000002 Location: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0001]Registry entry to create: "DPMstDscDisable"=dword:00000002 Location: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0002]Registry entry to create: "DPMstDscDisable"=dword:00000002
We currently have multiple Latitude 5530 laptops, all of which suffer from the same issue. When using an external monitor connected via a Thunderbolt v4 docking station, the external monitor will periodically flicker on and off. It happens anywhere from 2-10 times a day for users, seemingly randomly. We have reproduced the issue using multiple different Anker 777 docks and Dell WD22TB4 docks. The issue occurred when connecting the dock to the monitor via HDMI to HDMI and HDMI to DVI, but not when using DisplayPort to DisplayPort. We have ran all firmware and OS updates that are available for the docks and the laptops, swapped monitors, swapped cables, and escalated with Dell support all the way up to motherboard replacements with no success. Has anyone identified fixes/workarounds for this issue? Also, this issue appears to be widespread since January 2023, so I am creating a running list of other posts which seem to be related to this issue. Let me know if I am missing any other posts.  Posts regarding Dell Latitude 5530:  Posts regarding other Dell models:
Latitude 5530 - Flickering External Monitor when using Thunderbolt Docks