How to install GIMP 2.8.20 Available in PPA on Ubuntu 16.10, 16.04, 14.04, 12.04

GIMP 2.8.20 with various bug fixes—the most noticeable one being changes to the weird initial user interface language selection on macOS to make it use the user’s preferred language.
 

Also, for users on the Microsoft Windows platforms, an annoying oscillating switching between different input devices has been fixed, this should make using a tablet more reliable.

GIMP 2.8.20 Changelog:

• Core:
• •  Avoid D-Bus error message when built without D-Bus support
  •  fix OS X min required conditional in gimpimagewindow.c
  •  Saving to existing .xcf.bz and .xcf.gz files didn't truncate them and could lead to unnecessarily large files
  •  Text layer created by gimp-text-fontname doesn't respect border when resized
  •  avoid seeking when saving XCF files to prevent corruption with file network shares (fixed since 2014, but not mentioned in NEWS yet)

• GUI:
• •  Flow on Paint Dynamics editor dialog: the 'y' axis is indicating 'Rate' instead 'Flow'
  •  Vertical ruler shows artifacts if the status bar isn't showing
  •  Tablet stylus misbehaves when crossing the edge of a dock in multi-window-mode
  •  Disable the new "automatic window tabbing" feature introduced on macOS Sierra
  •  Improve the visiblity of slider handles with dark themes
  •  Make it harder to switch to renaming if selecting already selected items in resource lists

• Tools:
• • make toggling to color picker mode of paint tools more robust

• Libgimp:
• • call gimp_file_entry_set_filename() with filename encoding

• Windows Installer:
• •  Reduce the memory requirement when running the installer (has already been shipped in a 2.8.18 installer-only update)
  •  Ship an updated libcairo to fix GTK+ UI rendering problems, like missing palette border/bevel and shadowa under tab labels

• macOS DMG:
• •  Ship the Tango icon theme with the DMG for a complete set of icons
  •  fix the way mime data is copied into the bundle
  •  no longer copy Pango modules into the bundle
  •  prevent a crash caused by drag&drop on OSX by patching the included GTK+
  •  ship a patch for gettext to make sure the preferred UI language will be used

• Plug-ins:
• •  Prevent the Python console from closing by the Escape key
  •  Help browser does not launch on OS X
  •  Filter 'Edge Detect/Difference of Gaussians' returns empty image
  •  only use -xobjective-c for compile commands
  •  mkgen.pl: fix calls to write_file() routine to write to current directory
  •  When printing, the images are composed onto a white background to prevent printing a black box instead of a transaprent image
  •  Fix color visison deficiency display filters to apply gamma correction directly

• Updated Translations:
• •  Catalan
  •  Czech
  •  Danish
  •  Finnish
  •  French
  •  German
  •  Greek
  •  Hungarian
  •  Icelandic
  •  Italian
  •  Polish
  •  Portuguese
  •  Slovak
  •  Slovenian
  •  Scottish Gaelic
  •  Spanish
  •  Swedish

• General:
• • Bug fixes

Installation instructions:

Open terminal and insert command line...

$ sudo add-apt-repository ppa:otto-kesselgulasch/gimp $ sudo apt-get update $ sudo apt-get install gimp

Optional, to remove GIMP 2.8.20 and revert the changes, do:

$ sudo apt-get install ppa-purge $ sudo ppa-purge ppa:otto-kesselgulasch/gimp