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Thread: My laptop screen keeps going off! Solutions?

  1. #11
    Join Date
    Oct 2020
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    14

    Re: My laptop screen keeps going off! Solutions?

    Update.. This seems to only be happening when I am on Ubuntu, when i boot into Windows, this does not happen. I am uncertain how to diagnose this..

  2. #12
    Join Date
    Oct 2020
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    14

    Re: My laptop screen keeps going off! Solutions?

    Oh and I also cleared out dust, and checked connections.. No change

  3. #13
    Join Date
    Oct 2020
    Beans
    14

    Re: My laptop screen keeps going off! Solutions?

    So I have dusted and cleaned up the contact points and even the fan, but still when I log-in to Ubuntu, my screen again shuts down. On the other habd when I boot into Windows, this doesn't happen (In all the time I was using Win, it only went off once for some update, as compared to 6+ times on Ubuntu).

  4. #14
    Join Date
    Feb 2010
    Location
    Obscurial Springs
    Beans
    14,806
    Distro
    Ubuntu Budgie Development Release

    Re: My laptop screen keeps going off! Solutions?

    If it is overheating I suspect there was some sort of problem with the Ubuntu installation. If you run the following command in the terminal it should display what process may be causing the problem. Post output here via copy&paste
    Code:
    top
    "Our intention creates our reality. "

    Ubuntu Documentation Search: Popular Pages
    Ubuntu: Security Basics
    Ubuntu: Flavors

  5. #15
    Join Date
    Sep 2009
    Location
    Manchester (UK)
    Beans
    265
    Distro
    Xubuntu

    Re: My laptop screen keeps going off! Solutions?

    I don't want to complicate matters but I had the same problem (without the overheating) on my laptop. I've tracked it down to DPMS, which apparently stands for 'display power management signalling' and is often built into hardware.

    I run Xubuntu and there are settings to disable the screensaver, not blank the screen etc. -- but on my machine these are ignored and the screen goes blank after a few minutes, whether it's running on battery or mains power. But the XFCE power manager has an option to enable 'presentation mode', and when that is selected DPMS is disabled and the screen stays on.

    I don't know if your DE has a similar option? It might be worth exploring anyway, besides tackling the overheating of course.

  6. #16
    Join Date
    Oct 2020
    Beans
    14

    Re: My laptop screen keeps going off! Solutions?

    Thanks for sharing your experience @amanchesterman, but i have Ubuntu 20.04 which runs on Gnome and I am currently unable to find much about DPMS, though I will keep trying. Also!! The same thing has also happened just now on my system when I tried to boot it from Windows 10! it shut off, and when I powered it back on I got the message :"Unexpected Kernal mode trap".
    So I am kind of concerned that it is something related to the hardware bit :/

  7. #17
    Join Date
    Oct 2020
    Beans
    14

    Re: My laptop screen keeps going off! Solutions?

    @FrogsHair, below is the result of top:

    Code:
    top - 16:22:40 up 1 min,  1 user,  load average: 2.10, 1.01, 0.39
    Tasks: 304 total,   1 running, 303 sleeping,   0 stopped,   0 zombie
    %Cpu(s): 13.0 us,  1.2 sy,  0.0 ni, 85.2 id,  0.0 wa,  0.0 hi,  0.6 si,  0.0 st
    MiB Mem :   7832.3 total,   4760.9 free,   1403.1 used,   1668.3 buff/cache
    MiB Swap:   2048.0 total,   2048.0 free,      0.0 used.   6142.1 avail Mem 
    
        PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND                                                                                                                              
       2082 ro        20   0 1256876 225688  41988 S  77.1   2.8   0:08.72 snap-store                                                                                                                           
       1616 ro        20   0 1459892  93952  62748 S   4.7   1.2   0:04.45 Xorg                                                                                                                                 
       1807 ro        20   0 5294268 294220 121708 S   4.0   3.7   0:09.58 gnome-shell                                                                                                                          
       2752 ro        20   0 2200844 113004  77736 S   3.0   1.4   0:07.80 skypeforlinux                                                                                                                        
       2887 ro        20   0 6192916 159492 110180 S   2.7   2.0   0:10.02 skypeforlinux                                                                                                                        
    top - 16:22:44 up 1 min,  1 user,  load average: 2.10, 1.01, 0.39
    Tasks: 304 total,   2 running, 302 sleeping,   0 stopped,   0 zombie
    %Cpu(s):  2.7 us,  1.1 sy,  0.0 ni, 96.0 id,  0.0 wa,  0.0 hi,  0.2 si,  0.0 st
    MiB Mem :   7832.3 total,   4753.3 free,   1408.9 used,   1670.1 buff/cache
    MiB Swap:   2048.0 total,   2048.0 free,      0.0 used.   6136.3 avail Mem

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