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Thread: Help! My Asus monitor goes to sleep during boot

  1. #1
    Join Date
    Nov 2016

    Question Help! My Asus monitor goes to sleep during boot

    Hi all.

    Just installed Xubuntu 16.10 (also 16.04 LTS) on my desktop system. But I've ran into a odd problem with my Asus monitor that goes into sleep mode when lightdm loads. No matter what I do the monitor keeps going into sleep mode and the orange standby light is on. But if I unplug / turn off my monitor it works again and my monitor wakes.

    So how do I keep my monitor from going to sleep at boot?

    Note that suspend, logout and power management seems to work fine. It's only when I start or restart the system.

    Asus VW222u monitor
    Intel Core2Duo
    ATI Radeon
    4GB RAM
    Last edited by zavior2; November 26th, 2016 at 10:56 PM.

  2. #2
    Join Date
    Nov 2016

    Re: Help! My Asus monitor goes to sleep during boot

    Hi, again

    Through trial and error I have been able to get my monitor to not go to sleep after Xubuntu splash screen and show lightdm login screen.

    It seems that if I remove GRUB_CMDLINE_LINUX_DEFAULT="quiet splash", my system will boot without Xubuntu splash screen and go to the lightdm / login with no problem. No more monitor going to sleep at boot, but it will show Ubuntu startup messages.

    Workaround monitor going to sleep

    1. sudo cp /etc/default/grub /etc/default/grub.old
    2. sudo vim /etc/default/grub
    3. Edit out GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
    GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
    # GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
    4. sudo update-grub
    5. reboot

    But if there is a better way, I would like to know

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