| From: Samuel Sieb <samuel@sieb.net>

| On 2/6/21 5:44 PM, Paolo Galtieri wrote:
| >  I'm having an issue running Fedora 33 and an external monitor connected to
| > an HDMI KVM switch.  Here is the way it's connected:
| > 
| > Laptop thunderbolt 3 connector -> 4 port USB c to USB 3.0 hub -> USB to HDMI
| > adapter -> HDMI KVM switch.
| 
| I don't think there are any USB3 video adapters that work with Linux.

The standards are quite confusing.

Among the USB standards, apparently USB4 (note the lack of space in the 
name) is the first to (optionally) support HDMI.
	<https://en.wikipedia.org/wiki/USB>

On the other hand, a USB-c connector can support a whole bunch of 
standards, only some of which are USB (!!!).
	<https://en.wikipedia.org/wiki/USB-C>

So: there is no way your setup would work.

You need to use a use a dongle to connect to your laptop port and output 
HDMI.  Many of those dongles also break out USB 3 and ethernet.

I have a ThinkCentre Tiny that came with a USB-c to HDMI dongle.  It 
works under Fedora 33 to drive an UltraHD TV.  I am having a problem with 
the video, but surely it is unrelated to the dongle:
  <https://bugzilla.redhat.com/show_bug.cgi?id=1925815>

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