I'm running a nearly vanilla installation of OS X Yosemite 10.10.1 with the usual Homebrew, MacPorts, and Fink. I have barely anything installed with these utilities. For some reason, my Terminal.app is not producing an audible bell, even with the preference enabled. I have since enabled the visual bell, and at first it didn't produce a result either until I disabled the "Only when sound is muted" option. I do not have my system's default audio device muted; it is in fact at 100% volume and fully functional. It seems like Terminal.app is under the impression that my system audio is muted for some reason. How can I get my Terminal.app to beep like it did in past versions of OS X?
MacOS – Terminal not beeping on bell character
audiomacosterminal
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Best Answer
I came here via a search as I was experiencing exactly the same issue and tried all the steps suggested to Clay Freeman with the same results.
What worked for me was going into Systems Preferences / Sound, where I noticed that the slider for Alert Volume was at its leftmost setting. Sliding that to the right resolved the problem.