Kubuntu 16.04 GUI Audio Controls not working

 

I just upgraded to Kubuntu 16.04 beta and ran into a frustrating situation. My audio controls weren’t working; I tried my volume buttons, mute button and the little icon at the bottom (which happened to be highlighted in red).

RedIcon

When I went into Audio Volume Settings, all tabs had their own little version of “No _____ Detected”

nodetected

So what to do?

After some troubleshooting with the fantastic help of “clivejo” in the #kubuntu freenode channel, it was finally determined that the settings that I carried over from my previous version of Kubuntu were causing the problem.  Here’s how I solved it:

  1. Remove directory ~/.config/.pulse/
  2. Remove directory ~/.configh/.kmixrc
  3. Do this for all user accounts that have been carried over (these configurations are user-specific)
  4. If the issue persists, reinstall pulseaudio: sudo apt-get install --reinstall pulseaudio

With these four steps, you should regain control over your life again (or at least your audio).

Update:

You may find that the above temporarily solves the problem but upon the next bootup, it’s the same issue all over again.  (That was the case with me.)  Apparently there was another file somewhere in ~/.config/ left over from 14.04 that was screwing everything up.  (Seemed it clashed with Plasma’s autologin and pulse audio got pinched in the middle.)  Anyway, I just removed ~/.config/ entirely and started fresh.  If that’s not an option for you, remove each file one by one and see which one’s the culprit.  I just didn’t have the patience for that.

Update part 2:

The files that were causing trouble in my ~/.config/ were:

  1. ~/.config/akonadi/agentsrc
  2. ~/.config/akonadi/akonadiconnectionrc
  3. ~/.config/akonadi/akonadiserverrc

 

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Kubuntu 16.04 GUI Audio Controls not working

Controller Cheat Sheet

Common in index method

Get all posts and save them to @post, ordered by when they were creating in descending order:

@post = Post.all.order("created_at DESC")

Get all posts by a particular user and save them to @post, ordered by when they were creating in descending order:
@post = current_user.posts("created_at DESC")

Common in new method

Create a new post for the current user when that user has_many posts:

@post = current_user.posts.build

Create a new post for the current user when that user only has_one post:

@post = current_user.build_post

To authorize which users can access what

See my post here.

Controller Cheat Sheet

How to Override and Customize the Devise Controller in Rails

Was an absolute lifesaver when I was trying to add additional registration information to my sign-up page.

How I Learned Ruby on Rails

Judging by the number of different StackOverflow questions, there are a lot of people trying to do this, and a lot of confusion. Here is how I did it, and hopefully it helps you.

I have a User and a Verifier model.  What I want to do is create a new Verifier every time I create a new user, and pass in the user.id for the User into the verifier.user_id so that they are mapped together.

In order to do this I want to not really override but add additional functionality to the existing devise controller that handles when new users are created (and destroyed).  So I need to access the RegistrationsController#Create function in devise.

First thing is to create a new folder in the ‘app/controllers‘ folder where we can put my custom controller.  I called mine ‘app/controllers/my_devise‘.  Then create a new file in this folder…

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How to Override and Customize the Devise Controller in Rails