Ok, what is weird is that your screenshot looks like icons on 100% zoom on my laptop, but maybe it's due to the scaling. Here they look a bit too big with a set up in zooms.
The way icons works is that the code looks for matches in the different theme directory (the index.theme has an Inherit= key which lists other themes to use), so e.g the ubuntu-mono themes inherits from Humanity, GNOME, hicolor, so the code is looking in all of those. Also if the exact name is not found, it fallback to more generic ones ("application- vnd.oasis.opendocument.text.png/svg" is tried first, then it tries "application-vnd.oasis.opendocument" then "application-vnd.oasis", etc) It's likely that some of the icons are lacking at specific sizes in the theme -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/1448407 Title: icons size issues in Nautilus Status in nautilus package in Ubuntu: Confirmed Bug description: Ubuntu 15.04 (right after upgrade) Macbook Pro Retina 15 (menu scaling to 1,62) Nautilus scaling 150% for icons and 66% for lists Icons in Nautilus are displayed properly except for LibreOffice icons which are displayed 200-250%. Previews are displayed same size as LibreOffice icons. MS document files are displayed properly (150%) Dragging a file over a folder previously (14.10) made the folder darker (sometimes changing icon to opened) and the file could be dropped. In 15.04 (Nautilus 3.14.2) the folder icon SHRINKS (to 100%) and cannot be seen under the dragged icon. Would be nice if the old behaviour would be restored. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: nautilus 1:3.14.2-0ubuntu9 ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 Uname: Linux 3.19.0-15-generic x86_64 NonfreeKernelModules: nvidia wl ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CurrentDesktop: Unity Date: Sat Apr 25 11:26:58 2015 GsettingsChanges: b'org.gnome.nautilus.list-view' b'use-tree-view' b'true' b'org.gnome.nautilus.list-view' b'default-column-order' b"['name', 'size', 'type', 'date_modified', 'owner', 'group', 'permissions', 'mime_type', 'where', 'date_accessed']" InstallationDate: Installed on 2013-05-17 (707 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64+mac (20130424) SourcePackage: nautilus UpgradeStatus: Upgraded to vivid on 2015-04-25 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/1448407/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp