desktop-packages team mailing list archive

[Ryan Tandy <1251281@xxxxxxxxxxxxxxxxxx>]

Hi all,

The patches that were in my PPA (ppa:rtandy/flashback) are now in
trusty-proposed and utopic-proposed; so if you were using those
packages, please head over to bug 1416081, test the proposed packages,
and leave your feedback there.

If you had the PPA packages installed, please ensure you _downgrade_ to
the proposed packages as the version in -proposed is lower than what was
in the PPA. ppa-purge may help with that. (My bad; will choose ppa
versions more carefully next time.)

Thanks!

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-session in Ubuntu.
https://bugs.launchpad.net/bugs/1251281

Title:
  gnome-session-flashback/Unity fails to start without hardware
  acceleration in cloud/remote environments
  (Forwarded-X/XRDP/VNC/NX/X2GO/Chromoting)

Status in The GNOME 2 Session Manager:
  Fix Released
Status in gnome-session package in Ubuntu:
  Fix Released
Status in gnome-session source package in Trusty:
  Fix Committed
Status in gnome-session source package in Utopic:
  Fix Committed
Status in gnome-flashback source package in Vivid:
  Fix Released
Status in gnome-session source package in Vivid:
  Fix Released
Status in gnome-session package in Debian:
  New

Bug description:
  == Impact ==
  It was impossible to launch a gnome-session-based desktop on a system where hardware accelerations is not available (such as old hardware, or when using a remote desktop).

  That looks like a quite popular use case — more than a hundred of
  people marked this bug as affecting them.

  == Test Case ==
  The original bug description below contains a test case.

  == Proposed Fix ==
  The fix backports an upstream commit which adds --disable-acceleration-check commandline option, and makes Upstart user session pass that flag to gnome-session when the session is gnome-fallback (aka gnome-flashback-metacity). Of course, that option can be used with other sessions as well.

  This was fixed in vivid in version 3.14.0-2ubuntu4.

  == Regression Potential ==
  The option was accepted upstream, and nobody complained so far. So the regression potential should be low.

  This bug will cause static grey or black screen instead of opening
  remote session using Forwarded-X/XRDP/VNC/NX/X2GO/Chromoting from
  x2goclient, rdpclient(reminna/vinagre/mstsc), SSH, VNC, NOMACHINE and
  etc.

  == Original Description ==
  1) lsb_release -rd
  Description:	Ubuntu 14.04 LTS
  Release:	14.04

  2) apt-cache policy gnome-session
  gnome-session:
    Installed: 3.9.90-0ubuntu12
    Candidate: 3.9.90-0ubuntu12
    Version table:
   *** 3.9.90-0ubuntu12 0
          500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
          100 /var/lib/dpkg/status

  3) What is expected to happen is when one installs xrdp on the host
  and attempts to use remmina or vinagre on a Ubuntu 14.04 client to RDP
  in, it works.

  4) What happens instead is it shows a gray static screen as per attached screenshot. This would appear an issue with gnome-session as per client log:
  cat .xsession-errors.old
  Script for ibus started at run_im.
  Script for auto started at run_im.
  Script for default started at run_im.
  init: indicator-application main process ended, respawning
  init: indicator-application main process ended, respawning
  init: indicator-application respawning too fast, stopped
  Xsession: X session started for  at Sun Jul 20 15:25:59 CDT 2014
  X Error of failed request:  BadValue (integer parameter out of range for operation)
    Major opcode of failed request:  109 (X_ChangeHosts)
    Value in failed request:  0x5
    Serial number of failed request:  6
    Current serial number in output stream:  8
  localuser:moniker being added to access control list
  X Error of failed request:  BadValue (integer parameter out of range for operation)
    Major opcode of failed request:  109 (X_ChangeHosts)
    Value in failed request:  0x5
    Serial number of failed request:  6
    Current serial number in output stream:  8
  Script for ibus started at run_im.
  Script for auto started at run_im.
  Script for default started at run_im.
  Script for ibus started at run_im.
  Script for auto started at run_im.
  Script for default started at run_im.
  gnome-session-is-accelerated: No composite extension.
  gnome-session-check-accelerated: Helper exited with code 256
  gnome-session-is-accelerated: No composite extension.
  gnome-session-check-accelerated: Helper exited with code 256

  ** (process:2565): WARNING **: software acceleration check failed:
  Child process exited with code 1

  ** (x-session-manager:2565): CRITICAL **: We failed, but the fail
  whale is dead. Sorry....

  The following is not a WORKAROUND, create /etc/xorg.conf :
  Section "Device"
     Identifier  "Intel Graphics"
     Driver      "Intel"
     Option      "DRI" "False"
  EndSection

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: gnome-session 3.9.90-0ubuntu12
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sun Jul 20 15:35:23 2014
  InstallationDate: Installed on 2014-06-22 (28 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  PackageArchitecture: all
  SourcePackage: gnome-session
  UpgradeStatus: No upgrade log present (probably fresh install)

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