Q: MacMini 4,1 sound scrambled after upgrade to Sierra
I have a MacMini 4,2 (Mid 2010). It was running ElCapitan and I never had any issues with it. I just upgraded macOS today to Sierra and now all sound output is scrambled. I checked and tried everything in System Preferences and the Audio MIDI Setup, even reset NVRAM, PRAM and SMC but no changes. This system was working perfectly before the upgrade, anyone has an idea what else I could try to get my sound output back to normal? Since I use this MacMini as media server for music and movies I'm extremely frustrated with the sound issue since it renders the Mac unusable
Mac mini, macOS Sierra (10.12)
Posted on Sep 30, 2016 4:46 PM
I played around with my problem for hours now and came over a "solution", at least temporary. I have the HDMI cable plugged into the MacMini and power it on. I select my user account and enter the password for unlocking the FileVault startup disk. After confirming the password I UNPLUG the HDMI cable and let the MacMini boot until its on the desktop. Then I plug the HDMI cable back in and for WHATEVER REASON the sound works like a charm. At the moment better than nothing I guess, since I don't reboot this MacMini a lot it's a workaround. But not really happy with it... Hope it gets fixed on a future Sierra update. Hmmm...
Posted on Oct 2, 2016 6:06 PM