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Thread: screen going black

  1. #1
    Join Date
    Sep 2021
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    screen going black

    My screen turns black when I don't press a key during 60 seconds.. I have disabled both the screensaver and power management. Where else can I look?
    Last edited by iconoclastica2; 2 Weeks Ago at 09:14 PM.

  2. #2
    Join Date
    Jun 2010
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    London, England
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    Ubuntu Development Release

    Re: screen going black

    You do not give us any information that would help us to help you.

    Hardware specifications? What operating system? If it is Ubuntu what version? Is it a dual boot with another OS? What do you see on the screen before it goes black? What happens when you do press a key before 60 seconds have passed? What should happen after switching on the machine? Do you get a boot menu? What options are on the boot menu? Do you get a login screen? Is it at the login screen that the monitor screen turns black if a key has not been pressed before 60 seconds have passed?

    In typing those questions my mind has ranged from problems with the boot loader to the monitor going into power save mode. Some LCD monitors will darken if there is no activity on the screen. Mine does during the loading of Ubuntu.

    By the way I have given all the help I want to give.

    Regards
    It is a machine. It is more stupid than we are. It will not stop us from doing stupid things.
    Ubuntu user #33,200. Linux user #530,530


  3. #3
    Join Date
    Sep 2021
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    5

    Re: screen going black

    I thought it would be obvious that when talking about the screen saver I'd be in normal operation mode, after successful boot and login. Apparently not. I am. More precisely: I am reading in the browser of in a pdf, for when writing I tend to press keys all the time.
    It might be relevant indeed that this is a tablet computer with detachable keyboard (Jumper EZpad-6). OS is Zorin.
    Once I press a key, the screen immediately recovers. Only sometimes it turns black a second time.

  4. #4
    Join Date
    Jun 2007
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    Arizona U.S.A.
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    5,048

    Re: screen going black

    Quote Originally Posted by iconoclastica2 View Post
    My screen turns black when I don't press a key during 60 seconds.. I have disabled both the screensaver and power management. Where else can I look?
    Ubuntu doesn't come with a screensaver program. Did you install xscreensaver?

    Without any screensaver, the screen will blank if set to do so in Privacy > Screen Lock, OR Power > Power Saving. There is actually a 1 minute setting to blank the screen under both of these. Check how those are set.

  5. #5
    Join Date
    Jul 2008
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    The Left Coast of the USA
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    Kubuntu

    Re: screen going black

    Moved to Ubuntu/Debian BASED. Zorin is not Ubuntu. While much may be the same, small differences may count.
    Please read The Forum Rules and The Forum Posting Guidelines

    A thing discovered and kept to oneself must be discovered time and again by others. A thing discovered and shared with others need be discovered only the once.
    This universe is crazy. I'm going back to my own.

  6. #6
    Join Date
    Sep 2021
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    5

    Re: screen going black

    Did I install xscreensaver? No, I did not do so. But apparently, a (few) screensavers(s) come wit Zorin preinstalled. To detect whether it is the screensaver functionality that causes my issue, I changed the setting from "blank screen" to "pop art squares" while making sure that the 'enabled' switch remained off. From then, I never did see any popart, still black screens, but their activation period had changed to 5 minutes. Which is in fact the activation time set in the screen saver settings dialog. I was never, at least not recently, on 1 minute. Afterwards I changed it to 2 minutes and now my screen blacks out after two minuts. So I think it is save to say that the issue's cause has been narrowed down to the screen saver's functionality and I can disregard other possible causes for now.

    Why does this happen with the screen saver not enbabled? (And why was it 1 minute, even though at that time the setting was 5 minutes?)

    ======= addition ======
    Further experimenting led me to this conclusion:
    * the "enable screen saver"-switch does not disable the screensaver, but prohibits selection of another screen saver than the black screen
    * the "activate screen saver"-switch works independently from the former and activates any form of screen blanking when enabled.
    Last edited by iconoclastica2; 2 Weeks Ago at 09:59 AM.

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