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[Launchpad Bug Tracker <1755490@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package gnome-desktop3 - 3.8.4-0ubuntu3.3

---------------
gnome-desktop3 (3.8.4-0ubuntu3.3) trusty; urgency=medium

  * libgnome-desktop/display-name.c
    - some vendors encode the screen ratio (e.g 16/9) in the EDID instead
      of including the screen size, detect those cases and display
      the product name instead of the screen diagonal. (lp: #1755490)

 -- Dariusz Gadomski <dariusz.gadomski@xxxxxxxxxxxxx>  Fri, 30 Nov 2018
08:27:43 +0100

** Changed in: gnome-desktop3 (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

** Changed in: hwdata (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1755490

Title:
  Incorrect information about display shown in gnome/unity-control-
  center

Status in gnome-desktop3 package in Ubuntu:
  Fix Released
Status in hwdata package in Ubuntu:
  Fix Released
Status in unity-settings-daemon package in Ubuntu:
  Fix Released
Status in gnome-desktop3 source package in Trusty:
  Fix Released
Status in hwdata source package in Trusty:
  Fix Released
Status in unity-settings-daemon source package in Trusty:
  Invalid
Status in hwdata source package in Xenial:
  Fix Released
Status in unity-settings-daemon source package in Xenial:
  Fix Released
Status in hwdata source package in Bionic:
  Fix Released
Status in unity-settings-daemon source package in Bionic:
  Fix Released
Status in hwdata source package in Cosmic:
  Fix Released
Status in unity-settings-daemon source package in Cosmic:
  Fix Released

Bug description:
  [Impact]

   * There is a number of display devices that misuse the width & height field in EDID. Instead of real size in centimeters it contains encoded aspect ratio (e.g. 1600x900, 16x10, 160x90).
  This leads to incorrect calculation of diagonal for the purpose of e.g. Unity settings app.

  [Test Case]

   1. Connect a display device that provides incorrect EDID data (e.g. LG 49UB850T-DA TV).
   2. Open the Displays section of Unity settings.
   3. Look for the name of the newly connected display in the settings window.

  Expected result:
  Display name should contain its real diagonal or model name (if dimensions are not availabe).

  Actual result:
  Display name contains a ridiculous diagonal (e.g. 72" in case of a 49" display).

  [Regression Potential]

   * This affects the way the display name will be formatted for any
  software using unity-settings-daemon. If anything is testing/comparing
  display names - it may fail.

  [Other Info]

  * Original bug description:

  After connecting a LG 49UB850T-DA TV the following information is
  displayed in the unity-control-center: Goldstar Company Ltd 72"

  It's misleading since neither the company name nor the diagonal
  matches.

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