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Message #01731
[Bug 1897491] [NEW] greeter hang with 100% CPU with black display
Public bug reported:
Description: Ubuntu 20.04.1 LTS
Release: 20.04
lightdm-gtk-greeter:
Installed: 2.0.8-1ubuntu1
Candidate: 2.0.8-1ubuntu1
Version table:
*** 2.0.8-1ubuntu1 100
100 /var/lib/dpkg/status
2.0.6-0ubuntu1 500
500 http://ports.ubuntu.com focal/universe armhf Packages
Chromebook armv7 install of focal tarball, followed by manual upgrade
and xubuntu-desktop install. Selecting lightdm display manager results
in the above behavior. Switching to gdm3 *does* work, however,
requiring a full gnome-desktop install seems to defeat the purpose of
xubuntu-desktop.
The workarounds using Memlock in the service file for lightdm have no
affect, and neither does a native arm package rebuild of 2.0.6. The one
thing that *does* work (besides switching to gnome) is building the
debian 2.0.8 package using ubuntu deb tarball. Otherwise all you get
are the log errors shown below.
The greeter log shows the following:
** Message: 19:40:54.740: Starting lightdm-gtk-greeter 2.0.6 (Sep 18
2018, 01:17:10)
(process:5105): GLib-ERROR **: 19:40:54.851: creating thread 'gmain': Error creating thread: Resource temporarily unavailable
** Message: 19:51:32.569: Starting lightdm-gtk-greeter 2.0.6 (Sep 18 2018, 01:17:10)
(process:5597): GLib-ERROR **: 19:51:32.571: creating thread 'gmain': Error creating thread: Resource temporarily unavailable
** Message: 20:07:27.951: Starting lightdm-gtk-greeter 2.0.6 (Sep 18 2018, 01:17:10)
(process:6133): GLib-ERROR **: 20:07:27.954: creating thread 'gmain': Error creating thread: Resource temporarily unavailable
** Message: 20:09:14.102: Starting lightdm-gtk-greeter 2.0.6 (Sep 18 2018, 01:17:10)
(process:6244): GLib-ERROR **: 20:09:14.105: creating thread 'gmain': Error creating thread: Resource temporarily unavailable
** Message: 20:10:52.081: Starting lightdm-gtk-greeter 2.0.6 (Sep 18 2018, 01:17
** Affects: lightdm-gtk-greeter (Ubuntu)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of LightDM
Gtk+ Greeter Development Team, which is subscribed to lightdm-gtk-
greeter in Ubuntu.
https://bugs.launchpad.net/bugs/1897491
Title:
greeter hang with 100% CPU with black display
Status in lightdm-gtk-greeter package in Ubuntu:
New
Bug description:
Description: Ubuntu 20.04.1 LTS
Release: 20.04
lightdm-gtk-greeter:
Installed: 2.0.8-1ubuntu1
Candidate: 2.0.8-1ubuntu1
Version table:
*** 2.0.8-1ubuntu1 100
100 /var/lib/dpkg/status
2.0.6-0ubuntu1 500
500 http://ports.ubuntu.com focal/universe armhf Packages
Chromebook armv7 install of focal tarball, followed by manual upgrade
and xubuntu-desktop install. Selecting lightdm display manager
results in the above behavior. Switching to gdm3 *does* work,
however, requiring a full gnome-desktop install seems to defeat the
purpose of xubuntu-desktop.
The workarounds using Memlock in the service file for lightdm have no
affect, and neither does a native arm package rebuild of 2.0.6. The
one thing that *does* work (besides switching to gnome) is building
the debian 2.0.8 package using ubuntu deb tarball. Otherwise all you
get are the log errors shown below.
The greeter log shows the following:
** Message: 19:40:54.740: Starting lightdm-gtk-greeter 2.0.6 (Sep 18
2018, 01:17:10)
(process:5105): GLib-ERROR **: 19:40:54.851: creating thread 'gmain': Error creating thread: Resource temporarily unavailable
** Message: 19:51:32.569: Starting lightdm-gtk-greeter 2.0.6 (Sep 18 2018, 01:17:10)
(process:5597): GLib-ERROR **: 19:51:32.571: creating thread 'gmain': Error creating thread: Resource temporarily unavailable
** Message: 20:07:27.951: Starting lightdm-gtk-greeter 2.0.6 (Sep 18 2018, 01:17:10)
(process:6133): GLib-ERROR **: 20:07:27.954: creating thread 'gmain': Error creating thread: Resource temporarily unavailable
** Message: 20:09:14.102: Starting lightdm-gtk-greeter 2.0.6 (Sep 18 2018, 01:17:10)
(process:6244): GLib-ERROR **: 20:09:14.105: creating thread 'gmain': Error creating thread: Resource temporarily unavailable
** Message: 20:10:52.081: Starting lightdm-gtk-greeter 2.0.6 (Sep 18 2018, 01:17
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1897491/+subscriptions
Follow ups
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[Bug 1897491] Re: greeter hang with 100% CPU with black display
From: Bug Watch Updater, 2022-03-07
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[Bug 1897491] Re: greeter hang with 100% CPU with black display
From: Sean Davis, 2022-03-07
-
[Bug 1897491] Re: greeter hang with 100% CPU with black display
From: Launchpad Bug Tracker, 2021-11-24
-
[Bug 1897491] Re: greeter hang with 100% CPU with black display
From: Steve Arnold, 2021-01-11
-
[Bug 1897491] Re: greeter hang with 100% CPU with black display
From: Matinal Sun, 2020-12-28
-
[Bug 1897491] Re: greeter hang with 100% CPU with black display
From: Steve Arnold, 2020-09-28
-
[Bug 1897491] ProcEnviron.txt
From: Steve Arnold, 2020-09-28
-
[Bug 1897491] ProcCpuinfoMinimal.txt
From: Steve Arnold, 2020-09-28
-
[Bug 1897491] Re: greeter hang with 100% CPU with black display
From: Steve Arnold, 2020-09-28
-
[Bug 1897491] Re: greeter hang with 100% CPU with black display
From: Chris Guiver, 2020-09-28