@dino99 Happy to open a new bug report on this, as it still appears to be an issue in latest Ubuntu 17.10. Usually when reporting bugs, I opt to prefer adding information to an existing bug report that I have high confidence describes the problem I am seeing. I believe this helps to reduce creating many duplicates and to focus community effort on resolving the main underlying problem rather than bug report management overhead from many duplicates or "me too" comments with no helpful debug info. If this is not preferred on this project, or for some reason doesn't fit the developer bug triage process here, that's fine. I'm happy to add information upstream or in another LaunchPad bug.
Back to this problem: As it is a segfault reported in upstream gnome-shell which has something to do with OpenGL + resize behavior, I don't believe borked settings are the issue, nothing I've seen yet points towards that, although it'd be nice if the problem could be resolved by a config change instead of code change. This system never had any gnome-shell installed because Unity was there instead. Therefore, no pre-existing gnome-shell configuration can be hanging around. I've posted to upstream bug, but some info was here. To clarify: I do not have an Nvidia optimus nor do I use noveau, but use older nvidia-340 binary drivers. This is the nvidia recommended set of drivers for my card. Another comment in the upstream report mentions the issue may not have as much to do with Nvidia as it does with Xrandr fast video mode changes. I have confirmed this behavior in my own testing, and have a reproduction test case that works pretty reliably for me: Reproduction Command: # Use output and modes that are valid for you... xrandr --output HDMI-0 --mode 1920x1080 ; xrandr --output HDMI-0 --mode 1920x1080 ; xrandr --output HDMI-0 --mode 800x600 ; xrandr --output HDMI-0 --mode 1920x1080 I've tested this a couple times and it looks like I am able to trigger the crash just with fast xrandr commands. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/911591 Title: gnome-shell crashes when resizing OpenGL window Status in gnome-shell package in Ubuntu: Invalid Bug description: I have a couple of applications that I wrote myself. They are OpenGL graphics applications. One application uses SDL for OpenGL context management, and the other uses GLFW. When I resize the windows of these applications by dragging the window edges, gnome-shell crashes almost 100 % of the time after a certain amount of resizing back and forth. This does not happen when instantly resizing the window (e.g. with Alt+F10, which effectively does a resize as far as SDL and GLFW are concerned anyway). Rapidly resizing the window of glxgears does not seem to crash gnome- shell, which confuses me. I guess it is interacting with things differently or something. Anyways, I'm using the following versions of involved software packages: gnome-shell: 3.2.1-0ubuntu1.1 nvidia-current: 290.10-0ubuntu1~oneiric~xup1 (from the ubuntu-x-swat PPA) SDL: 1.2.14-6.1ubuntu4 GLFW: 2.7.2-1 I'm thinking that maybe the two libraries I use (SDL and GLFW) create new OpenGL contexts every time when using their respective resizing mechanisms, whereas glxgears does something different, and requesting new contexts with new sizes too often during a small period of time might not go too well? Not sure at all what details I can provide regarding this problem. Hopefully someone can ask the right questions and I will be able to provide the necessary information. I will be very lucky if the applications were started from a terminal. That way the undecorated window of the terminal has focus after the crash, and I can relaunch gnome-shell from there. Any help is appreciated! ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: gnome-shell 3.2.1-0ubuntu1.1 ProcVersionSignature: Ubuntu 3.0.0-15.24-generic 3.0.13 Uname: Linux 3.0.0-15-generic i686 NonfreeKernelModules: nvidia ApportVersion: 1.23-0ubuntu4 Architecture: i386 Date: Wed Jan 4 04:19:48 2012 InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012) SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/911591/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
