2023-04-12

When running only on battery, the screen goes black after 
30 seconds of inactivity.  
Keyboard or mouse activity restores screen illumination.


Search returned:

Screen goes to black after ~20 seconds of inactivity after 
upgrade to 21.10, no obvious way to disable #2104 
https://github.com/pop-os/pop/issues/2104

  see 
   fix: Disable DPMS times to fix screens powering constantly #123 
   https://github.com/pop-os/default-settings/pull/123/files

Create 
    /etc/X11/xorg.conf.d/10-pop-dpms.conf
containing:

Section "ServerFlags"
    Option "StandbyTime" "0"
    Option "SuspendTime" "0"
    Option "OffTime" "0"
    Option "BlankTime" "0"
EndSection


2023-07-06

Still having problems:
- after about 5 minutes the screen will blank;
- after 15-30 minutes the rsync will break;



# From https://askubuntu.com/questions/513710/how-to-prevent-ubuntu-server-sleep-hibernation

		date
Thu Jul  6 01:13:29 AM PDT 2023

		sudo systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target
[sudo] password for toby: 
Sorry, try again.
[sudo] password for toby: 
Created symlink /etc/systemd/system/sleep.target → /dev/null.
Created symlink /etc/systemd/system/suspend.target → /dev/null.
Created symlink /etc/systemd/system/hibernate.target → /dev/null.
Created symlink /etc/systemd/system/hybrid-sleep.target → /dev/null.

		date
Thu Jul  6 02:04:33 PDT 2023
# Screen was dark when I returned.
# Rsync still running
#    2023-07-03_porto/GX010105.MP4
#        1,294,692,592  32%