Can you see the make/model of your Soundcard listed in this window? If not, then there is a problem with the hardware connection between the computer and the sound card (such as the cable), or the software driver for the sound card is not working properly (and may need to be reinstalled). In the window that appears, click on the Sound icon, then on the Output tab. Try turning the sound card off and back on again.Ĭan your computer “see” the Soundcard? Go to the Apple menu in the very top left of your computer’s display, and select System Preferences from the menu. Make sure the sound card is turned on - are there any LED lights or displays on it that should be illuminated? Some sound cards plug into a mains socket, whilst others get their power from the computer they are attached to. It’s not uncommon, particularly on computer systems that are moved around for the cable to pop out a few millimetres, and it can look like it’s connected but isn’t properly inserted. Make sure the sound card is connected to your computer, and that the cable is fully inserted. It’s ridiculous that this step often fixes 90% of problems! The first step to try whenever there is a problem is to shutdown your computer, turn the power off to the computer and any other devices attached to it, and turn it back on. Relatively simple shows might connect using the headphone output socket of the computer. There are also some forms of “virtual” sound card, such as Dante Virtual Soundcard (DVS), where there isn’t a separate hardware device, but your computer is connected to the sound system using an Ethernet cable. Sound cards (aka audio interfaces) are typically a separate hardware device that are connected to your computer using a USB, Firewire or Thunderbolt cable. The “This cue does not have a valid audio output device”, “No audio device” or “issue with audio output patch” error message indicates to us that QLab can’t find the sound card / audio interface that it was using to send sound out of the computer to the sound system.
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