Comment 3 for bug 867856

It looks like this is specific to the myth-drivers plugin failing. It looks like you have an NVIDIA card, and here's the failure:

Oct 4 15:14:22 ubuntu ubiquity[3249]: Step_before = tab_remote_control
Oct 4 15:14:22 ubuntu ubiquity[3249]: Exception in GTK frontend (invoking crash handler):
Oct 4 15:14:22 ubuntu ubiquity[3249]: Traceback (most recent call last):
Oct 4 15:14:22 ubuntu ubiquity[3249]: File "/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py", line 617, in <lambda>
Oct 4 15:14:22 ubuntu ubiquity[3249]: GObject.idle_add(lambda: self.dbfilter.start(auto_process=True))
Oct 4 15:14:22 ubuntu ubiquity[3249]: File "/usr/lib/ubiquity/ubiquity/filteredcommand.py", line 90, in start
Oct 4 15:14:22 ubuntu ubiquity[3249]: prep = self.prepare()
Oct 4 15:14:22 ubuntu ubiquity[3249]: File "/usr/lib/ubiquity/plugins/myth-drivers.py", line 109, in prepare
Oct 4 15:14:22 ubuntu ubiquity[3249]: drivers = self.ui.get_drivers()
Oct 4 15:14:22 ubuntu ubiquity[3249]: File "/usr/lib/ubiquity/plugins/myth-drivers.py", line 97, in get_drivers
Oct 4 15:14:22 ubuntu ubiquity[3249]: active_video_driver=self.video_driver.get_active_text()
Oct 4 15:14:22 ubuntu ubiquity[3249]: AttributeError: 'ComboBox' object has no attribute 'get_active_text'
Oct 4 15:14:22 ubuntu ubiquity[3249]:

I'll investigate some more.