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[Launchpad Bug Tracker <1489833@xxxxxxxxxxxxxxxxxx>]

** Branch linked: lp:~uriboni/camera-app/no-permissions-dialog

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https://bugs.launchpad.net/bugs/1489833

Title:
  [Camera] If camera-app's access to the camera is revoked, it's hard to
  tell what's wrong

Status in Canonical System Image:
  Confirmed
Status in Ubuntu UX:
  Fix Committed
Status in camera-app package in Ubuntu:
  Confirmed

Bug description:
  From a discussion between the Ubuntu phone insiders:

  with ota6, the camera app asks you for permission to use the camera. need to put yes. not sure how to check whether the phone thinks it got a yes or a no.
  yes, i accept and all is black..
  I also accepted it, but I needed to activate it somewhere in the settings somehow…
  Systen Settings -> Security & Privacy -> Other app access -> Camera
  I thought I accidently pressed the wrong button, but I'm not the only one…
  yep and if you acc denied then you have no idea what's happening
  not to mention that the settings are basically hidden :))
  Systen Settings -> Security & Privacy -> Other app access -> Camera 😱
  the camera really ought to say "camera access revoked; re-enable in system settings" if it's revoked
  yeah, that would be good

  It is possible to revoke the camera app's access to the camera. This
  is, I suppose, OK, but if it's been done then the camera app should
  display "access revoked" or similar, rather than just a black screen,
  and explain how to re-enable access.

  I suppose letting an app know that it has been revoked (rather than
  just lying by giving it a black screen and claiming that that's what
  the camera sees) is a security violation (should apps know they have
  been revoked?) but the revocation settings are well-hidden (as
  mentioned) and people will be very confused if they accidentally
  revoke the camera-app's access to the camera and don't know how to
  turn it back on; the camera app could be a lot more helpful here.

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