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I'm having permanent problems with multiple monitors connected to my laptop using different usb-c docks. They work most of the time but sometimes start dying and I'm trying to find out why. I tried lsusb, which works for for everything except displays.

Is there some command to list recognized displays with their properties? I tried xrandr --listproviders but it does not return anything.

I tried to read syslog, kern.log, dmesg but could not find anything useful.

I have thinkpad with 3 big monitors working nicely, but other identical setups fails. I suspect it could be anything from kernel version to hardware settings (video freq should be same) so any help debugging is appeciated.

Pavel Niedoba
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1 Answers1

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get edid did return some information. This is notebook with 4 screens, one built-in and 3 usb, one display is switched to another input.

enter image description here

Supposed I have some information but no idea how to use it. According https://cs.wikipedia.org/wiki/EDID there should be screen resolution etc.

Pavel Niedoba
  • 111