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Thread: error when trying to stop lightdm

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  1. #1
    Join Date
    Jan 2013

    Question error when trying to stop lightdm

    Hi all,

    I'm getting error after stopping lightdm:

    BUG: soft lockup - CPU#0 stuck for 22s! [QInotifyFileSys:2249]

    I tried both ways:

    # sudo service lightdm stop


    # sudo /etc/init.d/lightdm stop

    with the same result, unfortunately (don't know maybe there are other ways to stop lightdm).

    Anyway, I must reset my PC to go on working.

    Ubuntu version:

    user@ubuntu:~$ cat /etc/issue
    Ubuntu 12.10 \n \l

    My kernel version:

    user@ubuntu:~$ uname -a
    Linux ubuntu 3.5.0-25-generic #39-Ubuntu SMP Mon Feb 25 18:26:58 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

    My lightdm version:

    user@ubuntu:~$ dpkg -s lightdm
    Package: lightdm
    Status: install ok installed
    Priority: optional
    Section: x11
    Installed-Size: 452
    Maintainer: Robert Ancell <>
    Architecture: amd64
    Version: 1.4.0-0ubuntu2
    Provides: x-display-manager
    Depends: debconf (>= 0.5) | debconf-2.0, upstart-job, libc6 (>= 2.14), libglib2.0-0 (>= 2.28.0), libpam0g (>=, libxcb1, libxdmcp6, libpam-runtime (>= 0.76-14), libpam-modules, adduser, libglib2.0-bin, dbus
    Pre-Depends: dpkg (>=
    Recommends: xserver-xorg, unity-greeter | lightdm-greeter | lightdm-kde-greeter
    Conflicts: liblightdm-gobject-0-0, liblightdm-qt-0-0
    /etc/apparmor.d/lightdm-guest-session a45e8f463e94787d78fb71606aa9ac28
    /etc/apparmor.d/abstractions/lightdm_chromium-browser 96d3d1257e57ceac6853644eb6ffea91
    /etc/apparmor.d/abstractions/lightdm a5ea7fd18262f09bac1c34f3fe65efbd
    /etc/init/lightdm.conf 85cf974c71fe8ec739f6f8eed6cd0f0e
    /etc/dbus-1/system.d/org.freedesktop.DisplayManager.conf b76b6b45d7f7ff533c51d7fc02be32f4
    /etc/lightdm/users.conf 9365d0d580a33cc9be3b5ad77ce5dcc8
    /etc/pam.d/lightdm-autologin 3d4f9d79e7302b4eff2b7a00e5e4693c
    /etc/pam.d/lightdm-greeter d5f358f26b463252c3365c18b7f38a7f
    /etc/pam.d/lightdm 02d4bd40eb6d8c03d4063da806aaf42c
    Description: Display Manager
    LightDM is a X display manager that:
    * Has a lightweight codebase
    * Is standards compliant (PAM, ConsoleKit, etc)
    * Has a well defined interface between the server and user interface
    * Cross-desktop (greeters can be written in any toolkit)

    Help me solve this problem, please.
    Last edited by marchelloUA; February 27th, 2013 at 09:11 PM.

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