On 4/2/21 3:47 AM, Frederic Muller wrote:
It turns out that video through USB is not part of the standards and thus proprietary.
Just a point of clarification: video (DisplayPort) over USB *is* a part of the USB standard. You have a non-standard dock.
DisplayLink (not DisplayPort) is basically a crappy GPU attached over USB. It has some advantages, such as driving multiple monitors over a single port without daisy chaining, and driving higher resolution monitors than is possible over USB 3.0, but it's also slow and prone to corruption, and requires a driver that's not good on any platform (I work with a group that supports thousands of these on Windows and macOS. They're a little bit terrible.)
sbin/modprobe evdi modprobe: FATAL: Module evdi not found in directory /lib/modules/5.11.10-200.fc33.x86_64
dkms should have compiled that driver when you installed the RPM. Run this command to find the location of the log file, and examine that:
rpm -q displaylink --scripts
The log file should have more information about why you don't have an evdi module.