Unexpected/unprompted Laptop Restart (FOG imaged laptop)



  • Hi Everyone,

    I am wondering if anyone can assist or has any idea as to why a fellow employee’s laptop is randomly rebooting. He will be working, laptop reboots, and a FOG log is then created and placed in his C:

    The first sign of this happened last week. Since then I removed his laptop from host management and it persist to keep happening.

    As described by the end-user…

    “My laptop randomly shuts down while I’m working on it. There does not appear to be any pattern to the shutdown except that it is random. The problem still persist. My laptop just shutdown while I was in a zoom meeting. Here is the fog log.”

    Below is the log output:

    2/24/2016 11:37 AM FOG::UserCleanup Sleeping for 10 seconds.
    2/24/2016 11:37 AM FOG::TaskReboot Starting Task Reboot…
    2/24/2016 11:37 AM FOG::SnapinClient Starting snapin client process…
    2/24/2016 11:37 AM FOG::DisplayManager Attempting to connect to fog server…
    2/24/2016 11:37 AM FOG::PrinterManager Attempting to connect to fog server…
    2/24/2016 11:37 AM FOG::TaskReboot Attempting to connect to fog server…
    2/24/2016 11:37 AM FOG::SnapinClient Sleeping for 479 seconds.
    2/24/2016 11:37 AM FOG::HostRegister Exiting because only 1 mac address was found.
    2/24/2016 11:37 AM FOG::AutoLogOut Unknown error, module will exit.
    2/24/2016 11:37 AM FOG::TaskReboot General Error Returned:
    2/24/2016 11:37 AM FOG::TaskReboot #!er:No Host Found
    2/24/2016 11:37 AM FOG::TaskReboot No task found for client.
    2/24/2016 11:37 AM FOG::UserTracker Attempting to connect to fog server…
    2/24/2016 11:37 AM FOG::UserTracker Unknown error, module will exit.
    2/24/2016 11:37 AM FOG::PrinterManager General Error Returned:
    2/24/2016 11:37 AM FOG::PrinterManager #!er:No Host Found
    2/24/2016 11:37 AM FOG::DisplayManager Unknown error, module will exit.
    2/24/2016 11:37 AM FOG::HostnameChanger Attempting to connect to fog server…
    2/24/2016 11:37 AM FOG::HostnameChanger General Error Returned:
    2/24/2016 11:37 AM FOG::HostnameChanger #!er:No Host Found
    2/24/2016 11:37 AM FOG::HostnameChanger Host name was not found in the database.
    2/24/2016 11:37 AM FOG::UserCleanup Starting user cleanup process…
    2/24/2016 11:37 AM FOG::UserCleanup Attempting to connect to fog server…
    2/24/2016 11:37 AM FOG::UserCleanup General Error Returned:
    2/24/2016 11:37 AM FOG::UserCleanup #!er:No Host Found
    2/24/2016 11:38 AM FOG::DirCleaner Starting directory cleaning process…
    2/24/2016 11:38 AM FOG::GreenFog Attempting to connect to fog server…
    2/24/2016 11:38 AM FOG::DirCleaner Attempting to connect to fog server…
    2/24/2016 11:38 AM FOG::GreenFog General Error Returned:
    2/24/2016 11:38 AM FOG::GreenFog #!er:No Host Found
    2/24/2016 11:38 AM FOG::DirCleaner Unknown error, module will exit.
    2/24/2016 11:38 AM FOG::MODDebug Reading config settings…
    2/24/2016 11:38 AM FOG::MODDebug Reading of config settings passed.
    2/24/2016 11:38 AM FOG::MODDebug Starting Core processing…
    2/24/2016 11:38 AM FOG::MODDebug Operating System ID: 6
    2/24/2016 11:38 AM FOG::MODDebug Operating System Minor: 1
    2/24/2016 11:38 AM FOG::MODDebug MAC ID 0 xx:xx:xx:xx:xx:xx
    2/24/2016 11:38 AM FOG::MODDebug MAC ID 1 xx:xx:xx:xx:xx:xx
    2/24/2016 11:38 AM FOG::MODDebug MAC POST String: xx:xx:xx:xx:xx:xx|xx:xx:xx:xx:xx:xx
    2/24/2016 11:38 AM FOG::MODDebug A user is currently logged in
    2/24/2016 11:38 AM FOG::MODDebug Username: username
    2/24/2016 11:38 AM FOG::MODDebug Hostname: hostname
    2/24/2016 11:38 AM FOG::MODDebug Attempting to open connect to: URL ADDRESS
    2/24/2016 11:38 AM FOG::MODDebug Server responded with: Hello FOG Client
    2/24/2016 11:38 AM FOG::MODDebug Module has finished work and will now exit.


  • Senior Developer

    @Sebastian-Roth autologout on the legacy client also causes the “random” reboot. I’ll even guess the reboot actually happens every so many minutes like clock work after the user signs in.

    The fog.log typically is very short in size and gets overwritten. It’s most likely the log had started over causing the lack of any other potentially relevant info being given to us.


  • Developer

    To me the log does not look like the laptop is being shutdown by the FOG client. The GreenFOG module would shutdown but on a normal schedule I’d say. TaskReboot could be kind of random but would reboot instead of shutting down.
    But to make sure you could just uninstall the FOG client and see if the laptop still keeps shutting down.


  • Moderator

    It’s also possible that this isn’t FOG related at all.

    It could be heat related, for example - which users normally describe as a random problem. The user is using a laptop after all, which are notorious for getting gunk built up inside the fan/radiator assembly.

    Do let us know what you find though, and also be aware that we have ceased development on the legacy fog client (what your using) because we have a new FOG Client that will roll out with FOG 1.3.0 which is a lot better than the old one.


  • Senior Developer

    My guess, and I’m only speaking with some experience, Auto Logout. Disable it. Windows 7 and up with the legacy client did not have a good mechanism to track the last activity times.


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