Display Link Stopped working on 3 monitors with M1

Xorcerer · 03-05-2026, 03:07 PM

I have an M4 MBP 14' with Tahoe 26.3.

It connect to
1. One monitor directly though USB Type-C.
2. One Targus Dock which connects to two monitors.

It works perfect before Tahoe.

And now, the two monitors can be both detected by DisplayLink, but only one can be detected by the OS. If I disable the one which detected by the OS, on DisplayLink, the other one screen on immediately.

I was told that it may cause by FileVault for some privacy reason, which makes no sense to me.

03-05-2026, 03:07 PM	#5
Xorcerer Junior Member Join Date: Mar 2026 Posts: 2	I have the same issue. I have an M4 MBP 14' with Tahoe 26.3. It connect to 1. One monitor directly though USB Type-C. 2. One Targus Dock which connects to two monitors. It works perfect before Tahoe. And now, the two monitors can be both detected by DisplayLink, but only one can be detected by the OS. If I disable the one which detected by the OS, on DisplayLink, the other one screen on immediately. I was told that it may cause by FileVault for some privacy reason, which makes no sense to me.