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[shadyyx <krajcar.peter@xxxxxxxxx>]

*** This bug is a duplicate of bug 1310316 ***
    https://bugs.launchpad.net/bugs/1310316

Well almost a year after the original bug was filed and we still have
this problem live. Affecting also me with a Dell laptop and 3 screens in
total setup (one laptop's + 2 displays). Had to upgrade the kernell to
3.13 and install some special Intel graphics drivers. Now when I set the
scaling of UI to 0.75 and let the bigger displays (with bigger pixels)
scale according to the display with the smallest controls the font size
scaling (some very hidden setting) suddenly changes (2-3 times out of 5
logins) to 0.56 making the fonts hardly readable. Unity tweak UI
installed just to make sure the scaling can be always reverted to 1.

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https://bugs.launchpad.net/bugs/1317253

Title:
  UI scaling and font scaling sometime get confused/change at random.

Status in Unity:
  New
Status in Unity Tweak Tool:
  Invalid
Status in unity package in Ubuntu:
  Confirmed

Bug description:
  I have a Lenovo Yoga 2 Pro, with a 13.3" screen running at 3200x1800
  pixels... I bought this partly to test out the UI scaling in Unity!...
  and I have to say it's very awesome (both the screen and the UI
  scaling)... however I have encountered a strange problem.

  Seemingly at random, I have so far 3 times in 10 days had the font
  size (not UI size) suddenly jump to something much too large.

  UI scaling for the display is set at 1.38x and this is quite perfect
  for me, it sure means no one will be able to read my screen over my
  shoulder, but I that's fine!  I had to install a Firefox plugin to
  apply scaling there, but I realise why that is.

  Anyway... I installed ubuntu-tweak and discovered that the large fonts
  were due to the "Text Scaling Factor" having jumped up to a number
  above 2.5... I also discovered that I could not move the slider
  because every time I moved it the fonts re-scaled the slider moved and
  lost mouse focus... and the slider reset to where it was to begin
  with... I clicked the button on the right to return to 1.0, and it
  returned to 1.4, which I assume is representative of the 1.38 I set in
  the screen scaling... but I have no explanation for why it suddenly
  jumped (when I logged out and back in) from 1.4 to something like
  2.5.)..

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: unity 7.2.0+14.04.20140423-0ubuntu1.2
  ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CurrentDesktop: Unity
  Date: Wed May  7 20:55:53 2014
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-04-28 (8 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  SourcePackage: unity
  UpgradeStatus: No upgrade log present (probably fresh install)

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