desktop-packages team mailing list archive

[Rolf Leggewie <1256150@xxxxxxxxxxxxxxxxxx>]

saucy has seen the end of its life and is no longer receiving any
updates. Marking the saucy task for this ticket as "Won't Fix".

** Changed in: lightdm (Ubuntu Saucy)
       Status: Fix Committed => Won't Fix

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/1256150

Title:
  Xorg guest session fails to start if the user has logged out and
  logged in again

Status in Light Display Manager:
  Fix Released
Status in Light Display Manager 1.8 series:
  Fix Released
Status in lightdm package in Ubuntu:
  Fix Released
Status in lightdm source package in Saucy:
  Won't Fix
Status in lightdm source package in Trusty:
  Fix Released

Bug description:
  [Impact]
  Unable to switch sessions.

  [Test Case]
  1. Log in to the desktop.
  2. Log out again. (But don't reboot or anything like that.)
  3. Log in again.
  4. Start a guest session.

  Result: Depends on Xorg server in use. With intel driver, the guest
  Xorg session fails to start up with a DRM permission error (see
  attached Xorg.1.log). With virtualbox, and possibly AMD proprietary
  driver, the Xorg session on :1 appears to fight the one on :0 for
  control of the framebuffer - windows from both desktops get drawn over
  each other, causing a big mess.

  The login/logout step is important: if you log in to the desktop
  immediately after the lightdm session has been started or restarted
  ("sudo service lightdm restart"), then the :1 session will start
  correctly.

  (This problem can also be reproduced in another way: some desktops,
  when locking the display, create a new greeter instance on :1. This
  will also fail if the user has logged out and logged in again. For
  example, Xubuntu does this.)

  [Regression Potential]
  Low. Bug is a simple fix for wrong logic and has been running in Ubuntu 14.04 for some time without issue.

To manage notifications about this bug go to:
https://bugs.launchpad.net/lightdm/+bug/1256150/+subscriptions