pulseaudio not authenticated

[Colin Law]

On 6 February 2016 at 09:31, Gary J. Kirkpatrick <garyartista at gmail.com> wrote:
> ...
> I am not just having this issue with respect to the volume applet function.
> Other system function icons are missing from system settings.  For example
> brightness control and appearance are also missing.

Try

sudo apt-get install ubuntu-desktop

it shouldn't do any harm and has been alleged to fix such problems in
the past (notably the missing applets in system settings

Colin


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