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Vertical display arrangement and webcam


Oscar Nalum

Question

First, some technical specifications:

Host PC

  • Microsoft Surface Pro 6
  • Windows 10 Version 2004 (19041.208)
  • Citrix Workspace 20.2.0.25 (2002)
  • Scale the session for high resolution: Yes

 

VDI

  • Windows 10 Version 1909 (18363.778)
  • Citrix VDA 1912 LTSR (1912.0.0.24265)
  • Microsoft Teams Version 1.3.00.8663 (64-bit). Citrix HDX Optimized.

 

The problem:

If I connect an external display to my laptop and arrange it above my laptop display, as below:

host_display1.thumb.png.09122a4f9d63e8a5b9b89098b313d545.png

 

...the "webcam window" in Microsoft Teams are being drawn in the incorrect position, as indicated here:

vdi_teams1.thumb.png.2216a7881b3cc6ccf45dbb768ba2900c.png

(I couldn't screenshot the actual webcam video, so hopefully my MS Paint drawing will do)

 

I use the video preview in the Teams settings in this example, but this also happens in actual video meetings/conferences, where both mine and the other attendants' video will be placed incorrectly on my screen.

 

Here is my display settings on the host (Surface Pro 6):

host_display1_2.thumb.png.e93f66b4d3807e9587e32bb08954d530.pnghost_display1_1.thumb.png.0493b0641d9aa3f7a9d554ae60aa433b.png

(Built-in display on the left, external monitor on the right)

 

...and on the VDI:

vdi_displays1_2.thumb.png.707a94ae99f07061ce225af5ea97fb66.pngvdi_displays1_1.thumb.png.2c3f7105e72acd2e31ad8e6fbf88a37a.png

 

vdi_displays1.thumb.png.5789892999e9d28cde9fceabeb65eaea.png

 

 

If I arrange the displays on the host horizontally, like this:

host_display2.thumb.png.98eb181fd975f77ace55b02f91ab27b4.png

 

The webcam is drawn correctly:

vdi_teams2.thumb.png.6655c0ca7c5b180692c256f84961eba6.png

 

 

Note:

  • This issue only occurs if I have Microsoft Teams on my main display, i.e. the Surface Pro built-in display. If I run Teams on my external display, the webcam draws correctly, regardless of display arrangement.

 

I assume this has something to do with the high DPI scaling? Any help would be greatly appreciated.

 

 

Bonus problem:

The webcams on the Surface Pro (Front and Rear) are unavailable for any other apps on the VDI. Only Microsoft Teams has access to them (which I think has something to do with Teams being HDX optimized?), while other apps like Zoom, Google Chrome or the built-in Camera app do not see these webcams.

If I connect a normal USB webcam, all apps has access to this.

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3 answers to this question

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13 hours ago, David Clark1709160691 said:

On the client side, all monitors should be set to the same DPI scaling %.

Yes, that does indeed solve this issue, but I cannot use 100% DPI scaling on my Surface Pro display, that makes text tiny and impossible to read.

 

Isn't Citrix supposed to have support for High DPI situations such as these?

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