[Solved] New MacOS Catalina breaks DisplayLink

[Shaneb]

I don't know if this is monitor specific, but with Mojave I had my two external monitors set to 60 Hertz and all was good but with the Catalina install, the refresh on the external monitor was lagging severely. Changing the refresh rate to 59.88 Hertz (NTSC) fixed this for me.

[Syntastic]

There are a lot of right answers in this thread but one that is seemingly missing is to update your docks firmware. This requires a windows computer (don't try with a VM).

https://dl.dell.com/FOLDER05691661M/..._A03_T8Y8T.exe

[marcopeg]

Hello, I followed all the latest instructions but the DisplayLink option doesn't show up in the Privacy settings and I can't find a way to add it manually.

How did you do?

[Mboudreau]

I ended up connecting my MacBook to power directly and then then Hub to another USB port - that worked for me ...

Marc

[lxhxr]

so today's update (20200121) still didnt work in catalina 10.15.2, didnt event prompt for screen recording permissions, and i dont even see displaylink under privacy/screenrecording... tried all the kextcache stuff but still no luck, any suggestions?

[PROGrand]

Screenshot 2020-02-11 at 01.30.41 (2).jpg
Screenshot 2020-02-11 at 01.30.41 (2).zip
Screen Recording optons was not available.

Spent 12 hours and got result. Catalina 10.15.3. Vantec USB3->DP4K.
Both internal and usb displays works.
Latest steps:
uninstalled "kext drivers" version (5.2.1(59))
in hackingtool - restore permissions and clear cache.
installed "app drivers" version (alpha 0.2.42)
SIP: enable
kext-dev-mode option removed from boot flags.
checked UsbCurrent - removed anything from USB except displaylink,keyboard and mouse, checked cables.