XDMCP Willing/Unwilling messages do not report hostname

[Robert Ancell]

[Impact]
When LightDM sends out an XDMCP Willing/Unwilling message it leaves the hostname blank. This field is used in clients

[Test Case]
1. Start LightDM with the XDMCP server enabled
2. Start an XDMCP client that supports showing available XDMCP servers (e.g. kdmchooser)

Expected result:
An appropriate label is used for the LightDM XDMCP server

Observed result:
No label is shown

[Regression potential]
Low. This field is now populated by the system hostname by default or a value specified in LightDM configuration.

[Launchpad Janitor (janitor)]

This bug was fixed in the package lightdm - 1.19.0-0ubuntu1

---------------
lightdm (1.19.0-0ubuntu1) yakkety; urgency=medium

  * New upstream release:
    - Use /dev/tty0 instead of /dev/console for VT operations (LP: #1566073)
    - Don't quit on SIGUSR1, SIGUSR2 or SIGHUP (LP: #960157)
    - Improve XDMCP IPv6 address selection (LP: #1575200)
    - Set XDMCP hostname field in to system hostname or configured value
      (LP: #1578442)
    - Allow fcitx and mozc to run in guest session (LP: #1509829)
    - Fix lxsession running in guest session
    - Drop support for legacy XMir
    - Fix g_spawn compiler warning
  * debian/rules:
    - Fix usage of dh_installinit (LP: #1292990)

 -- Robert Ancell <email address hidden> Thu, 05 May 2016 12:23:45 +1200

[Brian Murray (brian-murray)]

Hello Robert, or anyone else affected,

Accepted lightdm into xenial-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/lightdm/1.18.2-0ubuntu1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

[Robert Ancell (robert-ancell)]

Works in Xenial.

[Launchpad Janitor (janitor)]

This bug was fixed in the package lightdm - 1.18.2-0ubuntu1

---------------
lightdm (1.18.2-0ubuntu1) xenial; urgency=medium

  * New upstream release:
    - Don't quit on SIGUSR1, SIGUSR2 or SIGHUP (LP: #960157)
    - Use MIR_SERVER_HOST_SOCKET instead of MIR_SOCKET to report compositor
      socket to sessions. This used to work but no longer works in Mir 0.21
      (LP: #1583624)
    - Use only a single compositor on xlocal seats (LP: #1594229)
    - Fix Mir greeter log filename having "(null)" in the name (LP: #1590582)
    - Set XDMCP hostname field in to system hostname or configured value
      (LP: #1578442)
    - Improve XDMCP IPv6 address selection (LP: #1575200)
    - Allow fcitx and mozc to run in guest session (LP: #1509829)
    - Fix uninitialized memory errors
  * debian/lightdm.dirs:
    - Ensure user configuration directories /etc/lightdm/lightdm.conf.d and
      /etc/guest-session exist
  * debian/guest-account.sh:
  * debian/guest-session-setup.sh:
    - Source prefs.sh as privileged user to allow user modification
      (LP: #1581853)

 -- Robert Ancell <email address hidden> Tue, 21 Jun 2016 12:49:01 +1200

[Martin Pitt (pitti)]

The verification of the Stable Release Update for lightdm has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.