Hello David, My sympathies with you that must be annoying. You mentioned System Prefs. I wondered if you knew about the system report button in "About this Mac”? Hopefully, it doesn’t happen again but a screen dump of the audio devices might be useful to some of the Apple forums. (Shift + Command + 3).
May I take this opportunity to thank you for the instructional walk through mp3 files you have provided the community. Very good work and much appreciated. Gena Georgina Joyce Applied Psychologist Training and Coaching. Because individuals of groups matter! > On 14 Dec 2014, at 17:16, David Griffith <daj.griff...@gmail.com> wrote: > > Hello thanks for the feedback. > The reason I lose sound in the 3.5mm jack is a bit of a mystery. It is the > second time this has happened and only a re-install resolves the issue. If > you go into system preferences and consult the output tab the device has > completely disappeared with only internal speaker showing as a device. It is > almost as if the Mac has forgotten that it has the audio outputs. > I have no special drivers to redirect output like sound Flower so I do not > think there is anything my apps have done to settings which would cause this. > Anyway it is not as if an output device has been disabled, it has actually > completely disappeared with the Mac not being aware of it for some reason. If > anybody knows of a way to force the Mac to look for Hardware again and re- > recognise its own hardware I would be glad to hear. > As soon as I am in Recovery Console sound returns to the audio ports so it is > clearly something being screwed up by the OS. > The last time this happened was when I was running Lion so this is not, > hopefully, going to be a frequent issue. > > The other weirdness in Yosemite sound is that occasionally for no apparent > reason the balance gets shifted away from 50% to something like 77%. I have > seen others report this as well. This can be easily rectified in system > preferences but why it should happen in the first place is a bit of a mystery > also. > > David Griffith > > On 14/12/2014 09:03, M. Taylor wrote: >> Hello David, >> >> First, let me say that I am so sorry you had to go through all of that just >> to get back up and running. >> >> Second, I am wondering why you lost sound in your 3.5 earphone/microphone >> jack. If you don't track down the cause, or at least an easier solution, >> you may have to deal with such an issue in the future. >> >> I'm curious: did you check your audio output settings in system preferences >> or in the application-specific preferences before resorting to reinstalling >> the OS? I'm almost certain you did but just wanted to ask. >> >> A month or so ago, I removed and reinstalled several versions of Audio >> Highjack Pro. A couple of days ago, I was helping a friend test Skype and >> discovered that, while the built-in microphone worked, when I plugged in my >> Apple wired headset, she could not hear my voice. As it turned out, I >> discovered in Skype Preferences that one of my audio settings had been >> switched to Sound Flower. Thinking back, I do remember experimenting with >> Sound Flower back when I was working with Audio Hijack Pro. I was so glad I >> first checked the audio settings in Skype before uninstalling the >> application. >> >> As for the recovery partition: >> >> A couple of months ago, I purchased a 13 inch, mid-2014, MacBook Pro with >> Retina display. The machine came with Maverick. >> >> I subsequently updated it to Yosemite. Before making a Yosemite install USB >> Drive, I had need to re-install Yosemite using the Recovery partition. >> >> Upon using the startup key combo of Command+R, and of course starting >> VoiceOver after system Startup, I was given the option of re-installing >> Yosemite and only Yosemite. >> >> Now that I think about it, again, before making a USB Yosemite install key, >> I performed the same steps on a friend's MacBook Air which, like my Pro, had >> originally shipped with Maverick, and was able to re-install Yosemite from >> the Recovery partition. >> >> Now, of course, I have a Yosemite install key so have no need to use the >> Recovery partition but, for me and my friend, at least, the Yosemite >> Recovery partitions performed as expected. >> >> After doing a little research on this, a few minutes ago, I learned that >> Recovery Partition mileage may vary depending upon when the Mac was >> purchased and the type of Mac in question. >> >> Mark >> >> -----Original Message----- >> From: macvisionaries@googlegroups.com >> [mailto:macvisionaries@googlegroups.com] On Behalf Of David Griffith >> Sent: Saturday, December 13, 2014 6:02 PM >> To: macvisionaries@googlegroups.com >> Subject: Saga trying to reinstall Yosemtie >> >> I report this as a cautionary tale. >> Tonight I suddenly lost sound output from my 3.5 inch output from my iMac. >> Several reboots did not solve the problem. >> I went into recovery console to reinstall OS but was dismayed to find that >> only the option to re-install Mavericks was present. . >> As I had no choice I selected this option. However three attempts at >> re-installing Mavericks failed as I had Yosemite already installed. I >> somehow thought that Apple would not possibly have removed the recovery >> console ability to re-install, but they had. >> What I eventually had to do was erase everything on my hard disc in disc >> utility and I was then able to install a clean install of Mavericks. >> I then in mavericks tried to install the Yosemite update but my Mac was >> unable to download from the store. Luckily I had saved a copy of the >> original Yosemite install file and I was able to locate this and run this. >> Then after installing Yosemite I had to run all the updates and finally >> used the migration assistant to copy all my apps at across from my Time >> Machine. >> >> All in all it has taken me about 4 hours to complete the process but at >> least I can hear Voiceover again through my -headphones and do not have to >> rely upon speakers. >> >> Why Apple has not update the Recovery Console so that it supports Yosemite >> is very strange. Essentially you can no longer do a re-install with the >> recovery console now and you are restricted to clean installs of Mavericks >> and then after that upgrading to Yosemite. >> >> I will have to inquire about bootable media to run re-installs from but I >> thought that was the whole point of the recovery console. >> >> Checking on Google there are quite a few experiencing the same issue and >> complaining. >> >> David Griffith >> >> > > -- > You received this message because you are subscribed to the Google Groups > "MacVisionaries" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to macvisionaries+unsubscr...@googlegroups.com. > To post to this group, send email to macvisionaries@googlegroups.com. > Visit this group at http://groups.google.com/group/macvisionaries. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "MacVisionaries" group. To unsubscribe from this group and stop receiving emails from it, send an email to macvisionaries+unsubscr...@googlegroups.com. To post to this group, send email to macvisionaries@googlegroups.com. Visit this group at http://groups.google.com/group/macvisionaries. For more options, visit https://groups.google.com/d/optout.
