为什么我在Mac版的DAMS上无法看到Focusrite PCIeR卡的音频设备？

一些用户反映他们的Focusrite PCIeR卡在Mac的DAMS重启或开机后无法识别为音频设备。只有在以太网连接的Rednet Control和Dante Controller中出现，而依赖雷雳方式连接的音频MIDI设置和系统偏好设置中无法看到。

一个已知的应对方法是热拔插一下Mac和扩展箱之间的雷雳线缆。

而有些时候这是由于Focusrite的内核扩展在启动/重启时未能加载，可以在启动之后手动加载该内核扩展。

附件中的自动化小程序会在启动/重启后加载Focusrite内核扩展。当你运行这个小程序时，会要求输入密码获取管理员权限，然后会运行以下命令
‘sudo kextload /Library/Extensions/FocusriteRedNetPCIe.kext’

你也可以在启动/重启后，手动在终端程序中执行以上命令来加载内核扩展。

这个小程序没有被官方确认，仅作为一个可用的解决方案。

附件下载链接
https://professionalsupport.dolby.com/sfc/servlet.shepherd/document/download/0694u00000FmGRQAA3

Why can’t I See the Focusrite PCIeR Card as an Audio Device on a Mac Rendering and Mastering Workstation?

Some users have been experiencing an issue where their Focusrite PCIeR card is not available for selection as an audio device after a reboot or startup of their Mac Rendering and Mastering Workstation. It is still present in Rednet Control and Dante Controller connected via ethernet, but not in Audio Midi Setup or System Preferences, which depend on connection via Thunderbolt.

One known workaround is to hotplug the Thunderbolt cable between the Mac and the expansion chassis at the Mac.

However, sometimes this is due to an issue with the Focusrite kernel extension not loading on startup. This can be addressed by manually loading the kernel extension after startup/reboot.

The attached automator applet will load the Focusrite kernel extension after startup/reboot.

When you run the applet it will ask for the password to elevate to administrator privileges, then run the command: ‘sudo kextload /Library/Extensions/FocusriteRedNetPCIe.kext’

You can also execute the aforementioned command from the terminal to manually load the kernel extension after startup/reboot.

This applet has not been officially qualified and is provided as is as a workaround.