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Tags: command-line   16.04   suspend   monitor   wakeup  
Link: πŸ” See Original Answer on Ask Ubuntu πŸ”—

URL: https://askubuntu.com/q/854687
Title: Wake up monitor from standby and show the screen without blocking further standby [Ubuntu 16.04]
ID: /2016/11/28/Wake-up-monitor-from-standby-and-show-the-screen-without-blocking-further-standby-_Ubuntu-16.04_
Created: November 28, 2016    Edited:  June 12, 2020
Upload: November 24, 2022    Layout:  post
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The only thing I could find on your situation was this webpage (Can’t wake up monitor once dpms put it into sleep) from Archlinux. It’s a long read but at the very bottom one poster recommends your script say this:

sleep 1 && xset dpms force standby && sleep 8 && xset dpms force on

Note this user tip implies it is based on having turned off DRI3 in /etc/X11/xorg.conf.d/20-intel.conf and using DRI2:

Section "Device"
   Identifier  "Intel Graphics"
   Driver      "intel"
   Option "DRI" "2"
EndSection

Please note this is the best I could come up with for your problem and felt compelled to post it because there have been no other answers. Since I can’t reproduce your problem I have no idea if it will work for you as it has for others.

If it doesn’t work I encourage you to google as much as you can using appropriate keywords.

⇧ How to shutdown automatically when AC power is not available Is it normal for dpkg / kernel update to hit 100%?  β‡©