Ubiquity crashed while trying to connect to wifi

[Will Cooke]

Running the cosmic ISO from 2018-10-03 15:22. Boot to live session, start the install, try and connect to wifi.

A few things happen. The indicator seems to crash and then Ubiquity crashes. Not sure which is the cause.

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: ubiquity 18.10.9
ProcVersionSignature: Ubuntu 4.18.0-8.9-generic 4.18.7
Uname: Linux 4.18.0-8-generic x86_64
ApportVersion: 2.20.10-0ubuntu11
Architecture: amd64
CasperVersion: 1.396
CurrentDesktop: ubuntu:GNOME
Date: Wed Oct 3 18:41:19 2018
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd quiet splash ---
LiveMediaBuild: Ubuntu 18.10 "Cosmic Cuttlefish" - Beta amd64 (20181003.1)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Jean-Baptiste Lallement (jibel)]

Thanks for your report.

According to the stack trace, the Ubiquity crash is a consequence of the NM crash because the service disappeared from the bus.

Oct 3 18:38:06 ubuntu ubiquity[3468]: Exception in GTK frontend (invoking crash handler):
Oct 3 18:38:06 ubuntu ubiquity[3468]: Traceback (most recent call last):
Oct 3 18:38:06 ubuntu ubiquity[3468]: File "/usr/lib/ubiquity/plugins/ubi-wireless.py", line 190, in state_changed
Oct 3 18:38:06 ubuntu ubiquity[3468]: self.selection_changed(None)
Oct 3 18:38:06 ubuntu ubiquity[3468]: File "/usr/lib/ubiquity/plugins/ubi-wireless.py", line 121, in selection_changed
Oct 3 18:38:06 ubuntu ubiquity[3468]: self.nmwidget.is_row_connected()):
Oct 3 18:38:06 ubuntu ubiquity[3468]: File "/usr/lib/ubiquity/ubiquity/frontend/gtk_components/nmwidgets.py", line 348, in is_row_connected
Oct 3 18:38:06 ubuntu ubiquity[3468]: return self.view.is_row_connected()
Oct 3 18:38:06 ubuntu ubiquity[3468]: File "/usr/lib/ubiquity/ubiquity/frontend/gtk_components/nmwidgets.py", line 241, in is_row_connected
Oct 3 18:38:06 ubuntu ubiquity[3468]: if parent and self.wifi_model.is_connected(model[parent][0], ssid):
Oct 3 18:38:06 ubuntu ubiquity[3468]: File "/usr/lib/ubiquity/ubiquity/nm.py", line 148, in is_connected
Oct 3 18:38:06 ubuntu ubiquity[3468]: connectedap = get_prop(device_obj, NM_DEVICE_WIFI, 'ActiveAccessPoint')
Oct 3 18:38:06 ubuntu ubiquity[3468]: File "/usr/lib/ubiquity/ubiquity/nm.py", line 28, in get_prop
Oct 3 18:38:06 ubuntu ubiquity[3468]: return obj.Get(iface, prop, dbus_interface=dbus.PROPERTIES_IFACE)
Oct 3 18:38:06 ubuntu ubiquity[3468]: File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 70, in __call__
Oct 3 18:38:06 ubuntu ubiquity[3468]: return self._proxy_method(*args, **keywords)
Oct 3 18:38:06 ubuntu ubiquity[3468]: File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 145, in __call__
Oct 3 18:38:06 ubuntu ubiquity[3468]: **keywords)
Oct 3 18:38:06 ubuntu ubiquity[3468]: File "/usr/lib/python3/dist-packages/dbus/connection.py", line 651, in call_blocking
Oct 3 18:38:06 ubuntu ubiquity[3468]: message, timeout)
Oct 3 18:38:06 ubuntu ubiquity[3468]: dbus.exceptions.DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The name :1.16 was not provided by any .service files

Did you report the n-m crash?

[Will Cooke (willcooke)]

Yeah, Laney dropped in to IRC last night and said that it was probably the
same issue as he has a fix for. Waiting for that to land.

On Thu, 4 Oct 2018 at 05:45, Jean-Baptiste Lallement <
<email address hidden>> wrote:

> Thanks for your report.
>
> According to the stack trace, the Ubiquity crash is a consequence of the
> NM crash because the service disappeared from the bus.
>
> Oct 3 18:38:06 ubuntu ubiquity[3468]: Exception in GTK frontend (invoking
> crash handler):
> Oct 3 18:38:06 ubuntu ubiquity[3468]: Traceback (most recent call last):
> Oct 3 18:38:06 ubuntu ubiquity[3468]: File
> "/usr/lib/ubiquity/plugins/ubi-wireless.py", line 190, in state_changed
> Oct 3 18:38:06 ubuntu ubiquity[3468]: self.selection_changed(None)
> Oct 3 18:38:06 ubuntu ubiquity[3468]: File
> "/usr/lib/ubiquity/plugins/ubi-wireless.py", line 121, in selection_changed
> Oct 3 18:38:06 ubuntu ubiquity[3468]:
> self.nmwidget.is_row_connected()):
> Oct 3 18:38:06 ubuntu ubiquity[3468]: File
> "/usr/lib/ubiquity/ubiquity/frontend/gtk_components/nmwidgets.py", line
> 348, in is_row_connected
> Oct 3 18:38:06 ubuntu ubiquity[3468]: return
> self.view.is_row_connected()
> Oct 3 18:38:06 ubuntu ubiquity[3468]: File
> "/usr/lib/ubiquity/ubiquity/frontend/gtk_components/nmwidgets.py", line
> 241, in is_row_connected
> Oct 3 18:38:06 ubuntu ubiquity[3468]: if parent and
> self.wifi_model.is_connected(model[parent][0], ssid):
> Oct 3 18:38:06 ubuntu ubiquity[3468]: File
> "/usr/lib/ubiquity/ubiquity/nm.py", line 148, in is_connected
> Oct 3 18:38:06 ubuntu ubiquity[3468]: connectedap =
> get_prop(device_obj, NM_DEVICE_WIFI, 'ActiveAccessPoint')
> Oct 3 18:38:06 ubuntu ubiquity[3468]: File
> "/usr/lib/ubiquity/ubiquity/nm.py", line 28, in get_prop
> Oct 3 18:38:06 ubuntu ubiquity[3468]: return obj.Get(iface, prop,
> dbus_interface=dbus.PROPERTIES_IFACE)
> Oct 3 18:38:06 ubuntu ubiquity[3468]: File
> "/usr/lib/python3/dist-packages/dbus/proxies.py", line 70, in __call__
> Oct 3 18:38:06 ubuntu ubiquity[3468]: return
> self._proxy_method(*args, **keywords)
> Oct 3 18:38:06 ubuntu ubiquity[3468]: File
> "/usr/lib/python3/dist-packages/dbus/proxies.py", line 145, in __call__
> Oct 3 18:38:06 ubuntu ubiquity[3468]: **keywords)
> Oct 3 18:38:06 ubuntu ubiquity[3468]: File
> "/usr/lib/python3/dist-packages/dbus/connection.py", line 651, in
> call_blocking
> Oct 3 18:38:06 ubuntu ubiquity[3468]: message, timeout)
> Oct 3 18:38:06 ubuntu ubiquity[3468]: dbus.exceptions.DBusException:
> org.freedesktop.DBus.Error.ServiceUnknown: The name :1.16 was not provided
> by any .service files
>
> Did you report the n-m crash?
>
> ** Changed in: ubiquity (Ubuntu)
> Importance: Undecided => Medium
>
> ** Changed in: ubiquity (Ubuntu)
> Status: New => Triaged
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1795955
>
> Title:
> Ubiquity crashed while trying to connect to wifi
>
> Status in ubiquity package in Ubuntu:
> Triaged
>
> Bug description:
> Running the cosmic ISO from 2018-10-03 15:22. Boot to live session,
>...