Does it only happen in the lock screen? Assuming you're using gnome, does turning off automatic brightness make a difference?
https://help.gnome.org/users/gnome-help/stable/power-autobrightness.html.en https://itsfoss.com/automatic-brightness-ubuntu/
Does it only happen in the lock screen?
Assuming you're using gnome, does turning off automatic brightness make a difference?
https:/ /help.gnome. org/users/ gnome-help/ stable/ power-autobrigh tness.html. en /itsfoss. com/automatic- brightness- ubuntu/
https:/