Really simple and easy way, necessary for laptop users!
- Edit the file /etc/default/grub
- Find the line ‘GRUB_CMDLINE_LINUX_DEFAULT=’
- Append ‘consoleblank=60’
- Run sudo update-grub
- Reboot
Remember, press enter after the first boot in the login page. I found that the screen will not dim if there is no ‘blank’ key.
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