# Screen Mirror

**URL:** <https://vistaforum.chroma-q.com/t/screen-mirror/1984>\
**Category:** How do I ...?\
**Created:** [March 7, 2021, 2:52pm UTC](https://vistaforum.chroma-q.com/t/screen-mirror/1984 "2021-03-07T14:52:21Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![drewTheTechy](https://avatars.discourse-cdn.com/v4/letter/d/3ec8ea/32.png) [@drewTheTechy](https://vistaforum.chroma-q.com/u/drewTheTechy)\
**Post date:** [March 7, 2021, 7:32pm UTC](https://vistaforum.chroma-q.com/t/screen-mirror/1984/2 "2021-03-07T19:32:23Z")

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I believe that your issue has been addressed before. Vista outputs ArtNet lighting data over the top most network interface in the list in System Preferences, so if that top network interface is WiFi, the ArtNet data will be sent over WiFi and your lights will not be controllable. The simple fix is to go to _Network_ in System Preferences and reorder the list of network interfaces so that Ethernet is at the top. This way, even when WiFi is on, the lighting data will still be sent over Ethernet.

 ![Network Settings in System Preferences](https://us1.discourse-cdn.com/flex016/uploads/chroma_q/original/1X/f1a5a11e1dcbfdb3dfa1542b66bb8ba71d4e3c26.jpeg)  
See this post by Ben Coleman for more info:

> [@iMac network and internet](https://vistaforum.chroma-q.com/t/imac-network-and-internet/996/3):
>
> On Mac, Vista will only use the top network interface in the service order list. Make sure your WiFi adapter is below the Artnet Network adapter in the list.

Hope that helps!  
Drew

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