When the Alt-mode technology is active the 2nd part of the docking station (DisplayLink) is not working at start if it is not needed. Alt-mode is responsible for raising HDMI monitor (the only one you use in your case).
One of them is called Alt-mode it is only working when you are using USB-C.
The case with D6000 is that it is using two technologies. In contact with DisplayLink support, I have received this answer: I've searched but found nothing about these specific issues with macOS. After this, a new audio device is shown (Dell USB Audio) and I can disconnect the 3.5mm cable and connect again without needing to reconnect the whole dock. This hack only works if the cable is already connected before I unplug the dock. Both don't work, but, similarly to the Ethernet problem, it does work if I unplug and plug the dock again after macOS has booted. This dock has both a 3.5mm audio out on the back and a 3.5mm headset (in/out) on the front. It just doesn't work when I boot the MacBook with the dock already connected.
What I found out is that if I disconnect the entire dock from the MacBook and connect it again, it does work, it shows the Ethernet adapter as connected. Unplugging and plugging the cable again does not fix it. It does show up on Network settings, but it shows as disconnected. The first one is that Ethernet does not work. In short, I had to reboot while Sound settings window was open (makes no sense), but it worked, now I have the LG ULTRAWIDE audio output device and sound is working fine through HDMI.īut now I have two more problems. I noticed that no sound was coming through HDMI and in Sound settings there was no HDMI output device. Even though the display was already working, I've installed DisplayLink drivers anyway.
When I connected the dock for the first time through USB-C, the MacBook already started to charge and my LG Ultrawide monitor was being displayed as a second screen, no problems there. I've recently bought an M1 MacBook Pro and I'm trying to use a Dell D6000 dock that I already had for Windows/Linux laptops.
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