This bug was fixed in the package gdm3 - 3.30.1-1ubuntu3
---------------
gdm3 (3.30.1-1ubuntu3) cosmic; urgency=medium
* Build-Depend on gjs so that we don't produce uninstallable packages
on s390x which doesn't have gjs (LP: #1794721)
-- Jeremy Bicha <[email protected]> Thu, 11 Oct 2018 13:52:55 -0400
** Changed in: gdm3 (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1797355
Title:
Once logged in, GDM Shell process CPU usage spiking at 100%
Status in gdm3 package in Ubuntu:
Fix Released
Bug description:
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)
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