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[Bug 1535780] Re: Passing DisplayConfiguration scale property from nested server to host appears to not work

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: Jean-Baptiste Lallement <jean-baptiste.lallement@xxxxxxxxxx>
Date: Fri, 29 Jan 2016 09:03:32 -0000
Reply-to: Bug 1535780 <1535780@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Also affects: canonical-devices-system-image
   Importance: Undecided
       Status: New

** Changed in: canonical-devices-system-image
   Importance: Undecided => Critical

** Changed in: canonical-devices-system-image
       Status: New => Fix Committed

** Changed in: canonical-devices-system-image
     Assignee: (unassigned) => kevin gunn (kgunn72)

** Changed in: canonical-devices-system-image
    Milestone: None => ww04-2016

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https://bugs.launchpad.net/bugs/1535780

Title:
  Passing DisplayConfiguration scale property from nested server to host
  appears to not work

Status in Canonical System Image:
  Fix Committed
Status in Mir:
  Fix Committed
Status in mir package in Ubuntu:
  New

Bug description:
  I'm using code like this in QtMir, implementing a wrapper for
  DisplayConfigurationPolicy:

  void MirDisplayConfigurationPolicy::apply_to(mg::DisplayConfiguration& conf)
  {
      m_wrapped->apply_to(conf);

      conf.for_each_output(
          [&](mg::UserDisplayConfigurationOutput &output)
          {
                  output.scale = 2;
          });
  }

  Starting nested server with this, I fail to see the final applied
  DisplayConfiguration having the scale value I requested.

  Also, can you please check scale can be set for Android platform. It
  does work on Mesa/KMS anyway.

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