The issue is, that you have not set up the gtk3 theme in xubuntu. It should better be done by xubuntu desktop, I think. So it's anyway a kind of bug.
See please the blog on http://binbashblog.blogspot.de/2011/10/manually-change-gtk3-theme-in-xubuntu.html The following has helped: cp -r /usr/share/themes/greybird/gtk-3.0 ~/.config For root account you need: sudo cp -r /usr/share/themes/greybird/gtk-3.0 /root/.config There were the problem with black areas with other gtk3 application as well, e.g. evince. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-system-monitor in Ubuntu. https://bugs.launchpad.net/bugs/989581 Title: Black areas in gnome-system-monitor graphs when running under xfce Status in “gnome-system-monitor” package in Ubuntu: New Bug description: The size of the graph controls is not correct. black area is seen on lower left corner of the graphs ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: gnome-system-monitor 3.4.1-0ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic x86_64 ApportVersion: 2.0.1-0ubuntu6 Architecture: amd64 Date: Fri Apr 27 12:05:34 2012 ExecutablePath: /usr/bin/gnome-system-monitor InstallationMedia: Xubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) ProcEnviron: LANGUAGE=en_US:en PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: gnome-system-monitor UpgradeStatus: Upgraded to precise on 2012-04-26 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-system-monitor/+bug/989581/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
