My impression is that the affected KDE applications now rely on Qt5's
QIcon::fromTheme(...) to locate the icons. This is in line with the
documentation of KIconLoader::loadIconSet(...) (from source package
kiconthemes_5.15.0-0ubuntu1) that says: "@deprecated use
QIcon::fromTheme instead, which uses the iconloader internally".
But it seems that Qt5 only supports the very basic 'hicolor' icon theme
when not running in a KDE or Gnome session. The method
themeHint(ThemeHint hint) of the classes QKdeTheme and QGnomeTheme
support the hint QPlatformTheme::SystemIconThemeName, whereas the
implementation of this method for the class QGenericUnixTheme does not
support that hint (soruce package qtbase-opensource-src_5.4.2+dfsg-
2ubuntu9, file
src/platformsupport/themes/genericunix/qgenericunixthemes.cpp).
Therefore, I assume, the systems falls back to the fallback theme
'hicolor' using the hint QPlatformTheme::SystemIconFallbackThemeName. It
seems that 'hicolor' lacks of most icons needed by kate and the other
applications.
So it possibly requires a change in Qt5 rather than in specific KDE
applications or the KDE framework to get the icons back in these
applications when running in Xfce.
For a test (and as a rather dirty workaround) I have moved
/usr/share/icons/hicolor out of the way and replaced it with a symlink
to some other icon theme like 'oxygen' or 'elementary-xfce-darker'. For
example:
$ cd /usr/share/icons
$ sudo mv hicolor/ hicolor-bkp
$ sudo ln -s elementary-xfce-darker hicolor
Then I started kate, konsole, and dolphin manually from a terminal
window and they had most or even all of the missing icons back. When
started them from a launcher (from the panel in my case), the icons were
still missing. Now, after a fresh login to Xubuntu, the affected
applications have most or all of the missing icons, regardless of the
way I start them.
On the downside, now some other icons are missing. For instance, the
application icons of konqueror, kate, and other KDE applications are
missing in the launchers and in the Whisker Menu. But for the time being
I prefer to have a usable kate and happily accept some missing
application icons.
** Also affects: qtbase-opensource-src (Ubuntu)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to qtbase-opensource-src in
Ubuntu.
https://bugs.launchpad.net/bugs/1509562
Title:
no icons for menu, folders, directories, files
Status in dolphin package in Ubuntu:
Confirmed
Status in kate package in Ubuntu:
Confirmed
Status in konsole package in Ubuntu:
Confirmed
Status in qtbase-opensource-src package in Ubuntu:
New
Bug description:
no icons for menu, folders, directories, files
I am using Xubuntu 15.10 as the Guest in Virtualbox 5.0.8 r103449.
This happened after a recent Xubuntu update.
Info:
$ apt-cache policy dolphin
dolphin:
Installed: 4:15.08.2-0ubuntu1
Candidate: 4:15.08.2-0ubuntu1
Version table:
*** 4:15.08.2-0ubuntu1 0
500 http://mirror.cogentco.com/pub/linux/ubuntu/ wily/universe amd64
Packages
100 /var/lib/dpkg/status
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: dolphin 4:15.08.2-0ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.19.1-0ubuntu3
Architecture: amd64
Date: Fri Oct 23 17:35:08 2015
InstallationDate: Installed on 2015-06-01 (144 days ago)
InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150521)
ProcEnviron:
LANGUAGE=en_US
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: dolphin
UpgradeStatus: No upgrade log present (probably fresh install)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/dolphin/+bug/1509562/+subscriptions
--
Mailing list: https://launchpad.net/~touch-packages
Post to : touch-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~touch-packages
More help : https://help.launchpad.net/ListHelp
