Unlike Qt4, Qt5 doesn't come with a configuration tool to allow setting the icon theme, fonts or the style and instead, it tries to use the settings from the running desktop environment.

This works well for KDE and GNOME (as well as Unity) but you may encounter issues under other desktop environments such as Xfce, Cinnamon, MATE and others (I'm not sure what Qt5 versions are affected by this, but it seems to be fixed in the latest Qt 5.5.1 according to THIS comment).

Here's an example (Audacious 3.7 using the Qt5 interface under Linux Mint 17.2 with Cinnamon):

Blizzard's Battle.net tool was updated recently, probably in preparation for the upcoming WoW expansion called Warlords of Draenor, resulting in either a black screen or distorted / scrambled graphics on Linux (with Wine) with Intel graphics.

It looks like this is not a Wine or Battle.net bug but an Intel graphic drivers bug, at least that's what the Wine developers suggest.

Ubuntu 13.10 was released today and for those of you who plan on doing a clean install, here are 8 useful things to do after the installation.

Ubuntu Tweak, the popular tool that besides tweaking lets you easily install various applications that aren't available in the Ubuntu repositories, clean the apps / system cache and more, has been updated today, bringing support for the latest Ubuntu 13.04 along with some bug fixes.

The popular Unity Revamped PPA has stopped working once again a while back, but there's a new PPA that adds the same features to Unity along with some extra ones such as the Unity Touch Launcher icons.

The new Unity Revamped PPA, maintained by Garhuy, is only available for Ubuntu 12.04 LTS and adds the following features to Unity (with Compiz):

Unity Tweak Tool is a relatively new application that allows you to configure Unity, providing access to settings buried deep in Dconf-Tools or CCSM.

The tool developed by the freyja-dev team is now available in the Ubuntu Software Center, so there's no need to use a PPA any more, which should expose this excellent tool to a lot more users. The application is also available in a PPA for Ubuntu 12.10.

By default, the popular Eclipse IDE does not support the Ubuntu AppMenu or  HUD. The reason for this is that Eclipse has been blacklisted so it wouldn't use the AppMenu around the time of Ubuntu 10.10 Maverick Meerkat because it didn't work back then.

Now Eclipse does work with the AppMenu, however, there are some minor glitches like some menu shortcuts not being displayed (although they do work). If this isn't a problem for you, here's a quick way to whitelist Eclipse so it can make use of Ubuntu's Appmenu and HUD.

For those not familiar with Spotify, this is a music streaming service with comes with desktop applications for Linux, Windows and Mac OS X as well as iOS, Android, BlackBerry or Windows Phone. The service is available in a limited number of countries. More @ Wikipedia.

The Ambiance Spotify theme comes with Ambiance-like toolbar and colors, a better Spotify tray icon especially designed to look like the Ubuntu Mono Dark icon set (the default icons used in Ubuntu), along with other tweaks that try to give Spotify a more native feel.

Ubuntu Tweak, a popular tweak tool, was updated yesterday to version 0.8.2, which brings full support for Ubuntu 12.10, so the features that weren't working in the previous version, like changing the window titlebar theme, broken quicklist editor or the option to change the window button order, should all work now.

If you've been following WebUpd8 for a while, you've probably noticed that we used to make a post with things to tweak after each Ubuntu release (here are the 12.04 and 11.10 posts). This time, let's do things differently!

Y PPA Manager, like the name says, is a tool to manage PPAs: add, remove, purge PPAs, search for packages in Launchpad PPAs, list packages in a PPA and lots more, all from a single user interface. For a complete feature list, see the Y PPA Manager Launchpad page.

Ubuntu Tweak, the most popular tool to tweak various Ubuntu settings as well as add third-party sources (PPAs), has reached version 0.8.0, introducing a new feature called "Apps", a combination between the already existing App Center and Source Center features.

Ubuntu Tweak is a tool that lets you configure various aspects of the Ubuntu / Linux Mint desktop: change the GTK / icon theme, Unity settings, LightDM settings, clean up application cache, it comes with an Unity quicklist editor, a PPA source center and more.

Y PPA Manager, a tool to easily search for packages in Launchpad PPAs and perform various PPA actions: add, remove, purge, backup PPAs and more, has been updated to version 0.0.9.0 today.