Calibre blinking and nothing appears on the screen after a distribution upgrade to 12.10

[Wajih Letaief]

When launched from a terminal :

(python2.7:3073): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion `GTK_IS_WIDGET (widget)' failed

(python2.7:3073): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion `GTK_IS_WIDGET (widget)' failed
QWidget::setMinimumSize: (MainWindow/Main) The largest allowed size is (16777215,16777215)
QNativeImage: Unable to attach to shared memory segment.

Ubuntu 12.10 : Linux 3.5.0-15-generic #20-Ubuntu SMP i686 i686 i686 GNU/Linux

[Edward Donovan (edward.donovan)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1005677, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.

The bug is in liboverlay-scrollbars, and it's hitting apps that use qt4. The workaround is to set

  LIBOVERLAY_SCROLLBAR=0

either in the shell before your commands, or in /etc/enviroment until this is fixed.