This differs on a per-app basis, but you can generally find most app preferences by clicking the app’s name in the menu bar at the top of the screen, then clicking on “Preferences.” When in doubt, a quick web search for something like “no sound mac” should yield some advice. It will display all startup items and other login items on this Mac. The same can be said for a microphone that isn’t working when it should be. Run PowerSuite and choose Startup Boost in the sidebar. From OS X 10.8 on, this behaviour has changed and you probably won’t even be informed of the kernel panic. If you have no audio at all you likely need to specify an output device (like “Internal Speakers” or “Headphones”). In its classic form (OS X 10.7 and earlier), the whole screen of the Mac becomes greyed, and a multilingual message informs you that macOS has encountered a fault and needs to restart: this is a kernel panic. To rectify these problems you’ll need to dig into the app’s preferences. Not sure why I was in a hurry to upgrade to Mojave. When I do try to run Excel or other Apps, they freeze for about 60 seconds periodically before resuming. This includes DAW software like Ableton, video editors like Adobe Premiere, and sound-editing software like Audacity. I turned off Spotlight - no immediate improvement. If not automatically directed to the System Settings app, open System Settings from the Apple ( ) menu in the menu bar. Some applications have their own sound preferences that must be managed manually. Not all sound problems are related to macOS. If you cannot see your HDMI device listed and it’s definitely connected and working, try disconnecting it and plugging it back in. Your Mac should remember which device output settings you prefer in the future.
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