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Bug#868087: marked as done (light-locker: Locking screen with light-locker crashes system to blinking cursor)

Your message dated Wed, 2 Dec 2020 19:09:07 +0100
with message-id <X8fYQ0wpG/6eY9tb@pivert.maison>
and subject line Re: Bug#972417: xfce4-power-manager: System left idle => 'display power management' auto-locks session => no X session or lightdm greeter
has caused the Debian Bug report #972417,
regarding light-locker: Locking screen with light-locker crashes system to blinking cursor
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
972417: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=972417
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: light-locker
Version: 1.7.0-3
Severity: important

Dear Maintainer,

when locking the screen using either the command 'dm-tool lock' or 'light-locker-command -l', the screen will black showing only a blinking cursor. Switching to TTYs is not possible and only a restart will resolve the situation. This happens for every execution of the aforementioned commands.

Also when issuing a 'light-locker-command -a', the screen will not be turned off, instead the following error message is generated:
** Message: The screensaver failed to activate.

seat0.greeter.log:
** Message: Starting lightdm-gtk-greeter 2.0.2 (Nov 16 2016, 20:48:17)
** Message: [Configuration] Reading file: /usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_debian.conf
** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf
Activating service name='org.a11y.atspi.Registry'
Successfully activated service 'org.a11y.atspi.Registry'

** (lightdm-gtk-greeter:742): WARNING **: [PIDs] Failed to execute command: upstart

** (lightdm-gtk-greeter:742): WARNING **: Error getting user list from org.freedesktop.Accounts: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.Accounts was not provided by any .service files

(lightdm-gtk-greeter:742): Gtk-WARNING **: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar)

(lightdm-gtk-greeter:742): Gtk-WARNING **: Drawing a gadget with negative dimensions. Did you forget to allocate a size? (node menubar owner GreeterMenuBar)



-- System Information:
Debian Release: 9.0
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-3-amd64 (SMP w/12 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages light-locker depends on:
ii  dconf-gsettings-backend [gsettings-backend]  0.26.0-2+b1
ii  libc6                                        2.24-11+deb9u1
ii  libcairo2                                    1.14.8-1
ii  libdbus-1-3                                  1.10.18-1
ii  libdbus-glib-1-2                             0.108-2
ii  libglib2.0-0                                 2.50.3-2
ii  libgtk-3-0                                   3.22.11-1
ii  libpango-1.0-0                               1.40.5-1
ii  libpangocairo-1.0-0                          1.40.5-1
ii  libsystemd0                                  232-25
ii  libx11-6                                     2:1.6.4-3
ii  libxext6                                     2:1.3.3-1+b2
ii  libxss1                                      1:1.2.2-1
ii  lightdm                                      1.18.3-1

light-locker recommends no packages.

light-locker suggests no packages.

-- no debconf information

--- End Message ---
--- Begin Message --- 
Dear Yves-Alexis,

Thanks for your reply.

I am happy to announce that this bug #972417 disappeared, even if I don't know what solved it.
Bug occurred until Nov 4th 2020, at least.
Bug did not occur from (at least) Nov 21st 2020, and did not reoccur until today.
Thus I'll close this bug report.

For the record let me answer your points:

> The lightdm greeter is on tty8, so try with Ctrl-Alt-F8.
When bug occurred, tty8 remained black.

> With all those bugs already opened and the mess we're already in, why opening
> *yet another one*? Honestly it adds more confusion than anything at that
> point.
Because this bug report was filled against xfce4-power-manager, due to reasons explained in '[ Guilty package ]'.
Other reports that I listed were all filled against other packages. None against xfce4-power-manager yet.
Sorry that it got felt as 'confusing', that was not intended.

> As indicated in https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=870641#218
> the bug *should* be fixed in 10.5 with kernel 4.19.0-10. You indicated that
> you tested with linux-image-4.19.0-11-amd64-unsigned     4.19.146-1
> 
> Can you retry with that kernel and check you have the “atomic” message in the
> kernel log:
> 
> broken atomic modeset userspace detected, disabling atomic

I tested when bug still occurred. Results:

1) with current stable kernel: linux-image-4.19.0-12-amd64   4.19.152-1
- Bug still occurred
- I could not find "broken atomic modeset userspace detected, disabling atomic" in kernel log, ie nothing found by
  - grep -ri "broken atomic" /var/log
  - dmesg | grep -i "broken atomic"

2) with old old stable kernel: linux-image-4.19.0-10-amd64   4.19.132-1
- Bug still occurred
- I could not find "broken atomic modeset userspace detected, disabling atomic" in kernel log, ie nothing found by
  - grep -ri "broken atomic" /var/log
  - dmesg | grep -i "broken atomic"

Regards,
Franck

--- End Message ---
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