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My machine was in 14.04 with gnome fallback I ve started the update towards 16.04, went ok. Now when I log in the icons are just enormous"enter image description here

If I log in with guest session, it goes on Unity with correct size. enter image description here

Someone knows files to erase or modify to fix that?

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2 Answers 2

Reset to default
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You can try to open unity-control-center, then select Displays in it and set other screen Resolution (preferable native for your monitor):

  • from terminal with 

    unity-control-center display

  • from GUI by clicking on Gear in top right, select System settings and then Displays (you can move window by clicking Alt+F7).

  • or programmatically (change '1920x1080+0+0' below to your resolution, second part resets scaling which may be the problem too)

    sudo apt-get install dconf-cli

dconf write /org/compiz/profiles/unity/plugins/core/outputs "['1920x1080+0+0']"

dconf write /org/gnome/desktop/interface/scaling-factor 'uint32 0'
dconf write /org/gnome/desktop/interface/cursor-size 24
dconf write /org/gnome/desktop/interface/text-scaling-factor 1.0
dconf write /org/compiz/profiles/unity/plugins/unityshell/icon-size 48

    if above does not help try XRandr - xrandr -s 1920x1080.

If you do not have personal settings of Unity and/or GNOME you may want to backup 

dconf dump / > dconf_backup

and then reset them with:

dconf reset -f /org/compiz/
dconf reset -f /org/gnome/
dconf reset -f /com/ubuntu/user-interface/

also try

unity --reset
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  • Thanks, will try but the window will be so big that I will not be able to navigate into it. But will keep you posted.
    – Houba
    Feb 17, 2018 at 15:02
  • Updated answer with other variants.
    – N0rbert
    Feb 17, 2018 at 16:20
  • The above commands do not change anything. The resolution is set to the 1920x1080 (max) for the screen I have.
    – Houba
    Feb 17, 2018 at 20:45
  • Very strange, I can't understand what happens. How it is possible - big interface parts with correct high resolution... Only icons are big? Or windows are big too? You can try to install GNOME FlashBack (sudo apt-get install gnome-panel) and set resolution from it.
    – N0rbert
    Feb 17, 2018 at 20:50
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    Sorry for the delay but installing dconf and performing the reset worked as instructed.
    – Houba
    Mar 4, 2018 at 19:10
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For Ubuntu 17 the following works

  1. Open nautilus app
  2. Right corner select view 'grid icon'
  3. Use mouse scroll to adjust thumbnail size
  4. Now go to desktop see the changes.
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