Question

54

How to prevent my screen from either dimming or the screen-lock starting when watching YouTube?

rated 0 times [ 54] [ 0] / answers: 1 / hits: 110551 / 2 Years ago, sun, january 2, 2022, 4:12:48

My screen brightness used to dim after a few seconds to preserve battery. This is default in Ubuntu 12.04. However when watching video it should not dim.

This works correctly when I watch videos using native applications like VLC. With in-browser video, however, the screen is not prevented from dimming.
This is very annoying as you have to move your cursor every 10 seconds or so.

I used to use Mac OSX where I had the same dimming settings and Flash videos were taken into account correctly.

Anyone an idea how you can make YouTube prevent your screen from dimming?

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bleger

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1 Year ago

answered 2 Years ago bewre · Accepted Answer

HOWTO: Disable screen saver while Flash is running

Create a bash text file containing

#!/bin/bash



# Cleanup any bad state we left behind if the user exited while flash was

# running

gconftool-2 -s /apps/gnome-screensaver/idle_activation_enabled --type bool true



we_turned_it_off=0



while true; do

    sleep 60

    flash_on=0



    for pid in `pgrep firefox` ; do

        if grep libflashplayer /proc/$pid/maps > /dev/null ; then

            flash_on=1

        fi

        

        ss_on=`gconftool-2 -g /apps/gnome-screensaver/idle_activation_enabled`



        if [ "$flash_on" = "1" ] && [ "$ss_on" = "true" ]; then

            gconftool-2 -s /apps/gnome-screensaver/idle_activation_enabled 

                --type bool false

            we_turned_it_off=1

        elif [ "$flash_on" = "0" ] && [ "$ss_on" = "false" ] 

                && [ "$we_turned_it_off" = "1" ]; then

            gconftool-2 -s /apps/gnome-screensaver/idle_activation_enabled 

                --type bool true

            we_turned_it_off=0

        fi



    done

done

Make the script executable by running:

chmod +x ~/path/to/script/flash_saver.sh

Run the script:

~/path/to/script/flash_saver.sh

If you prefer, you can set this script to run at logon by doing the following:

Run the program "Startup Applications"

Click "Add"

Under name type "FlashMonitor" or something you will recognise

Under command type the path to the script

Under comment (if you want) type a brief description. E.g. "Stops screen turning off when Flash is running"

Source: HOWTO: Disable screen saver while Flash is running - ubuntuforums