What is the Display Manager the UNO Q is using and Debian 13 simulation result

Official Hardware UNO Family UNO Q
1

hi, just placed order for the ABX00173 variant few days ago, not yet receive the physical device yet but running desktop debian linux on PC to test, wonder anyone can share the information what Display Manager the UNO Q is using via the command below ?

cat /etc/X11/default-display-manager

Please advise.

2

Hmm, its a good question. I haven't got a board yet so can't answer it directly. However, after some Googling it seems that Zephyr OS does not have a display manager like X11 or Wayland, just a low level API. I did find a display API documentation here:

https://docs.zephyrproject.org/apidoc/latest/group__display__interface.html

On the other hand, Debian Trixie has Simple Desktop Display Manager (SDDM) by default. However, since Linux allows a variety of alternatives to be installed e.g. LightDM, Qualcomm could have gone with something different. Google suggests that the Uno Q does not have a traditional display manager, so I am also interested to see what that command comes back with.

3

@rickygai
It's lightdm

1 Like
4

BitSeeker, mstackoverflow, thank you all for the feedback.

After some checking and compare, I believed under Debian 13, UNO Q is adopting Xfce as desktop environment and LightDM as display manager as pictures shown below.

Arduino UNO Q

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Debian 13

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During the Debian 13 installation, at the 'Software selection' stage, I chose Xfce.

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The Debian 13 installed under VirtualBox 7.2.4 r170995 (Qt6.8.0 on windows) with 4 Cores, 4GB RAM and 32GB disk space allocated, something similar to UNO Q ABX00173 variant.

The same time, removed Firefox, LibreOffice and installed Brave browser, VSCode, OnlyOffice and some command line tools, it used about 66% of total 32GB disk space. Here is the fastfetch result.

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Meanwhile, I also run a .NET application in VSCode, OnlyOffice and it already occupied almost 73% of RAM.

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I believed from the simulation result above, the UNO Q variant ABX00173 4GB RAM 32GB eMMC should be the optimum one to go for.

Since I am testing it under VirtualBox, and using a very low end software based graphics card simulation where with the Adreno GPU 3D on UNO Q, the actual performance should be better if not mistaken.

Anyway, very excited and looking forward to test the UNO Q ABX00173 variant board.

Hope this help and thanks again :slightly_smiling_face: