Public bug reported: This happens on some nvidia card, with the nvidia blob driver (fallbacked to Xorg for gdm).
1. Boot your laptop 2. Log into gdm -> once your user session is loaded, gdm GNOME Shell process goes crazy, up to 100%, continously. GNOME Shell (for user gdm) restarts in loops due to not be able to paint (context lost). More info on the upstream bug: https://gitlab.gnome.org/GNOME/gdm/issues/429#note_344826. #gnome-shell IRC logs: jadahl | so its the context-lost handling going crazy then didrocks | looks like so… didrocks | jadahl: FYI, I have a gdb shell opened right now, tell me if you have time or if I can help for anything jadahl | didrocks: I suppose what we need is a wayt to tell if its a context lost because of gdm switch away, or if its a context lost that should be handled jadahl | can't say I know at hand how to make that distinction didrocks | makes sense (surprised though that it doesn't seem to hit everyone fallbacking to Xorg for gdm). Is it something that should be discussed with halfline? halfline1 | check if its foreground vt i guess... jadahl | didrocks: only nvidia has the context lost thing didrocks | jadahl: Laney has a nvidia card as well, he checked that he's fallback to Xorg as well but doesn't have that issue apparently, which is puzzling… halfline1 | i wouldnt be surprised if theres a driver bug involved didrocks | yeah, I think that I'm on the "unlucky card triggering this nvidia driver bug" case :p ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: mutter 3.30.1-1 ProcVersionSignature: Ubuntu 4.18.0-8.9-generic 4.18.7 Uname: Linux 4.18.0-8-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.10-0ubuntu11 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Thu Oct 11 12:19:41 2018 InstallationDate: Installed on 2018-05-24 (139 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash SourcePackage: mutter UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: mutter (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug cosmic rls-cc-incoming ** Tags added: rls-cc-incoming -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1797355 Title: Once logged in, GDM Shell process CPU usage spiking at 100% To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1797355/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
