Moved yesterday from 11.10 to 12.10 Beta (clean install), and experienced this bug too. I can confirm that this affects the hplip toolbox, but also Spyder (which is a python IDE).
The work-around in comment #5 is all that is needed to get spyder to run properly: LIBOVERLAY_SCROLLBAR=0 spyder So I'm happy for now. Thank you all for all the comments here, this is invaluable when one runs into issues like these! -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to qt4-x11 in Ubuntu. https://bugs.launchpad.net/bugs/1005677 Title: Re-emergence of "Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion `GTK_IS_WIDGET (widget)'" To manage notifications about this bug go to: https://bugs.launchpad.net/ayatana-scrollbar/+bug/1005677/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
