On Thu, Jul 18, 2019 at 08:16:31PM +0200, al3xu5 / dotcommon wrote:
> Please I need your help.
>
> I have installed a fresh ASCII on a small barebone pc to be used as audio
> server. Using MATE and lightdm.
>
> I have also installed some multimedia stuff and apt updated & upgraded
> packages.
>
> When I plug any usb stick as normal user, it is not automounted and I get a 'not
> authorized to perform operation' error; I can mount the stick manually as root
> (sudo).
>
> Which is the problem? Any idea?

Could you please check if you have installed:

libpam-elogind
elogind
libpolkit-backend-elogind-1-0

If not, install these packages, log out and in again. Should work
afterwards

cheers,
Andreas