Display Turns Black If Cursor Moves To Certain Areas (DisplayLink)

[laoc]

Hello there,

I have a strange problem. When I connect my Dell Precision 5570 via a WD22TB4 Thunderbolt Dock and the Display Link to my displays it turns black for a few seconds when I am at one of three possible positions with my cursor (see attached image).
It does not happen on the right side. It happens exactly on the same positions when I connect second display.

My docking station seems authorized when I run boltctl:

❯ boltctl
 ● Dell WD22TB4 Thunderbolt Dock
   ├─ type:          peripheral
   ├─ name:          WD22TB4 Thunderbolt Dock
   ├─ vendor:        Dell
   ├─ uuid:          0d7e8780-00f3-49b4-ffff-ffffffffffff
   ├─ generation:    USB4
   ├─ status:        authorized
   │  ├─ domain:     8bc48780-d063-7dbc-ffff-ffffffffffff
   │  ├─ rx speed:   40 Gb/s = 2 lanes * 20 Gb/s
   │  ├─ tx speed:   40 Gb/s = 2 lanes * 20 Gb/s
   │  └─ authflags:  none
   ├─ authorized:    Do 17 Nov 2022 19:34:46 UTC
   ├─ connected:     Do 17 Nov 2022 19:34:45 UTC
   └─ stored:        Mo 14 Nov 2022 07:53:48 UTC
      ├─ policy:     iommu
      └─ key:        no

I thought it might have something to do with “Screen Edges” and turned them off completly, but still no difference

Any ideas on what could be the issue?

Thanks!

[bogdancovaciu]

@laoc

Screen Edges

Might not be related to the behavior there, but on Desktop Effects.

[laoc]

Thanks, turned that off as well, but no difference. Also I noted that the behavior has something to do with the resolution I choose. If I use lower resolution like 1920*1080 I don’t have that issue.

Is this somehow loggable, so I can see what happens when the screen turns black?