Monitor (DisplayPort) randomly blacks out for a few seconds

I just changed my hardware :
I had a Nvidia GPU and a Intel CPU with no graphic chipset.
I now have no dedicated GPU and a Intel CPU with a graphic chipset.
At startup, after the change, I had to uninstall the Nvidia drivers (sudo mhwd -r pci video-nvidia) from a virtual terminal and reboot to get to the login screen.
Now i have this issue. (title : Monitor (DisplayPort) randomly blacks out for a few seconds)

:+1: Welcome to Manjaro! :+1:

  1. Please read this:
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    and press the three dots below your post and press the :pencil2: to give us more information so we can see what’s really going on.
    Now we know the symptom of the disease, but we need some more probing to know where the origin lies… :grin:
  2. An inxi --admin --verbosity=7 --filter --no-host --width would be the minimum required information for us to be able to help you. (Personally Identifiable Information like serial numbers and MAC addresses will be filtered out by the above command)
    Also, please copy-paste that output in-between 3 backticks ``` at the beginning and end of the code/text.