This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1807250

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: bionic

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  At some point in the 18.04 cycle, /sys/bus/iio has disappeared from my

Status in linux package in Ubuntu:

Bug description:
  I have a Yoga 900-13ISK and a Thinkpad T470s. Both have had working
  screen rotation in the past. However, I noticed today while supporting
  a user in #ubuntu, neither do now. No icon in the Gnome menu and:

  # G_MESSAGES_DEBUG=all iio-sensor-proxy 
  ** (process:14877): DEBUG: 12:31:21.603: Could not find any supported sensors

  Indeed, /sys/bus/iio does not exist! I believe this is distinct from
  LP: #1792813, as I have just tested mainline 4.19 and it also does not

  I am working on getting more data, including testing older kernels
  from 18.04, but it might take me some time.

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