desktop-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

beauxq, thank you for reporting this and helping make Ubuntu better.

Could you please run the following command once from a terminal as it will automatically gather and attach updated debug information to this report:
apport-collect -p xorg 1522212

Please ensure you have the package xdiagnose installed, and that you
click the Yes button for attaching additional debugging information.

When reporting xorg related bugs in the future, please do so via the
above method. You can learn more about this functionality at
https://wiki.ubuntu.com/ReportingBugs.

** Package changed: xserver-xorg-video-nouveau (Ubuntu) => xorg (Ubuntu)

** Changed in: xorg (Ubuntu)
   Importance: Undecided => Low

** Changed in: xorg (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1522212

Title:
  kernel panic involving threading

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  my system:
  intel core i5
  nvidia 310m
  lubuntu 15.10
  sfml libsfml-dev 2.3.2+dfsg-1
  g++ 4:5.2.1-3ubuntu1

  I'm running my own cross-platform multimedia application.
  The program works as expected on this same ubuntu system with the proprietary nvidia driver and works as expected in Windows.
  This is how I conclude that the bug is in nouveau.

  This program uses sfml and c++ std::thread
  I send a thread to load some textures (into video memory), main thread shows a simple loading screen.
  artifacts on screen, then kernel panic

  I can reproduce the crash 100% on this system. I don't have another system to test it with.
  I have been unable to reproduce the problem with a smaller amount of code, I can zip up the whole project for you if you want.

  The problem does not occur if I just call the same functions in the
  main thread, only when I create a separate thread to load the
  textures.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  CurrentDesktop: X-Cinnamon
  Date: Wed Dec  2 18:41:45 2015
  InstallationDate: Installed on 2015-10-18 (45 days ago)
  InstallationMedia: Lubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  SourcePackage: xserver-xorg-video-nouveau
  UpgradeStatus: No upgrade log present (probably fresh install)

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