Mute and Lock Screen with one command

[Vermind]

You should test if your dpms works in normal mode at all. Perhaps it's disabled or something? Type

xset dpms q

into a terminal and check what's written after DPMS (Energy Star):
Also, try to enable dpms screen turnoff without my script, using

xset dpms 0 0 10

Then wait for 10 seconds without typing or moving the mouse. The screen should turn off. If not, maybe dpms is not working for you? The script can be modified to turn off the screen anyway without dpms in that case.

[abhiroopb]

You should test if your dpms works in normal mode at all. Perhaps it's disabled or something? Type

xset dpms q

into a terminal and check what's written after DPMS (Energy Star):
Also, try to enable dpms screen turnoff without my script, using

xset dpms 0 0 10

Then wait for 10 seconds without typing or moving the mouse. The screen should turn off. If not, maybe dpms is not working for you? The script can be modified to turn off the screen anyway without dpms in that case.

Happy New Year! - It's already Jan 1 2010 5:20 am here!

Anyway back to the matter at hand.

xset dpms q

I get the following output:

$ xset dpms q
Keyboard Control:
  auto repeat:  on    key click percent:  0    LED mask:  00000002
  auto repeat delay:  500    repeat rate:  30
  auto repeating keys:  00ffffffdffffbbf
                        fadfffefffedffff
                        9fffffffffffffff
                        fff7ffffffffffff
  bell percent:  0    bell pitch:  400    bell duration:  100
Pointer Control:
  acceleration:  2/1    threshold:  4
Screen Saver:
  prefer blanking:  yes    allow exposures:  yes
  timeout:  0    cycle:  0
Colors:
  default colormap:  0x20    BlackPixel:  0    WhitePixel:  16777215
Font Path:
  /usr/share/fonts/X11/misc,/usr/share/fonts/X11/100dpi/:unscaled,/usr/share/fonts/X11/75dpi/:unscaled,/usr/share/fonts/X11/Type1,/usr/share/fonts/X11/100dpi,/usr/share/fonts/X11/75dpi,/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType,built-ins
DPMS (Energy Star):
  Standby: 0    Suspend: 0    Off: 0
  DPMS is Enabled
  Monitor is On

So, I guess there is no problem with that

xset dpms 0 0 10

This seems to turn my monitor off every 10 seconds. So, I will not move my mouse and EVERY 10 seconds my monitor turns off.

I am currently having two problems using the script:

1. The monitor turns off when I lock the screen but after 10 seconds the monitor turns back on.

2. If I move the mouse or hit a key on the keyboard the unlock box shows up and if I don't type anything the monitor still stays on.

Any thoughts?

Thanks

[Vermind]

Change this in the script:

# set specified DPMS settings:
xset dpms ${standby} ${suspend} ${off}

to

# set specified DPMS settings:
echo "xset dpms ${standby} ${suspend} ${off}"
xset dpms ${standby} ${suspend} ${off}

then run it in the console and see what it is setting for dpms.

[abhiroopb]

Change this in the script:

# set specified DPMS settings:
xset dpms ${standby} ${suspend} ${off}

to

# set specified DPMS settings:
echo "xset dpms ${standby} ${suspend} ${off}"
xset dpms ${standby} ${suspend} ${off}

then run it in the console and see what it is setting for dpms.

Ran it in the console and here is the output:

./mute-and-lock.sh 
xset dpms 0 0 10

The screen switches off, but, after about 10s the screen turns back on and stays on.

[Vermind]

Ok, it seems that gnome-screensaver really really wants to show you a pretty blanked screen or some other screensaver. It is turning the screen back on in order to do that. In my opinion, I should really be allowed to choose just locking and not touching the screen after that. Anyway, I was able to hack around it using gnome-screensaver-command -i, which prevents the screensaver from activating. It also blocks, so I have to run it in a separate process. When I run it after locking the screen, the screen will stay locked and dpms will correctly keep the screen turned off like intended, and the 10-second turnoff also functions properly.

#!/bin/bash
########################################
# mute-and-lock.sh                     #
# Mutes sound and locks the screen     #
# using amixer and gnome-screensaver.  #
# Version 1.01                         #
# -Added DPMS screen turnoff           #
# -Prevent gnome-screensaver from      #
#  turning the screen back on          #
#                                      #
# written by Vermind                   #
########################################

########################################
# Settings                             #
########################################

card=0;           # Sound card. 0 == default, first card.
channel="Master"; # Which volume to control. Examples: Master, PCM, Headphone
step=3;           # Fade step: The volume increment/decrement amount
interval=0.2      # Seconds between increments/decrements when fading
lockdelay=0.5     # How long wait between unlock checks. Smaller values unmute faster
# but use more CPU when locked.
# DPMS settings to use when locked, 0==infinity:
standby=0 # how many seconds of inactivity to wait before screen standby
suspend=0 # before screen suspend
off=10 # before turning the screen off


########################################
# Functions                            #
########################################

# get current volume
function getvol {
    vol=$( ${m} sget ${channel} | awk '
$0 ~ "%" { 
    if ($4 ~ "%") {
        print $3;
    } else if ($5 ~ "%") { 
    print $4;
    exit 0;
    }
}' )
}

# fades volume up or down
function fade {
    # get current volume
    getvol
    if [ "$1" == "down" ]; then
        # fade down:
        while [ ${vol} -gt 0 ]; do
            sleep ${interval}
            ${m} set ${channel} ${step}- >/dev/null
            let vol-=${step}
        done
        ${m} set ${channel} mute >/dev/null
   else
       # first unmute, then fade up
        ${m} set ${channel} unmute >/dev/null
         while [ ${orig} -gt ${vol} ]; do
            sleep ${interval}
            let vol+=${step}
            if [ ${vol} -gt ${orig} ]; then vol=${orig}; fi
            ${m} set ${channel} ${step}+ >/dev/null
        done
        ${m} set ${channel} ${orig} >/dev/null
   fi
}

# Returns when the screen has been locked and unlocked
function unlockcheck {
    screenlockacc=0;
    haslock=
    while true; do
        sleep ${lockdelay}
        locked=$( gnome-screensaver-command -q | grep " active" )
        if [ -n "${haslock}" ]; then
            # lock has happened before. Check unlock and break if unlocked
            if [ -z "${locked}" ]; then break; fi
        fi
        if [ -n "${locked}" ]; then
            haslock="true"
        fi
    done
}

########################################
# Startup                              #
########################################

# short mixer command with card
m="amixer -c ${card}"
# record original volume value
getvol
orig=$vol

# record original DPMS settings.
dpms=$( xset dpms q | awk '$0 ~ "Suspend" && $0 ~ "Standby" && $0 ~ "Off" { print $2, $4, $6; }' )

########################################
# Procedure                            #
########################################

# set specified DPMS settings:
xset dpms ${standby} ${suspend} ${off}
gnome-screensaver-command -l # lock screen
fade down # fade volume down and mute
xset dpms force off # turn off the screen (directly after lock results in too quick turnoff)
gnome-screensaver-command -i -a "mute-and-lock" & # Stop screensaver from waking up the screen
unlockcheck # wait for unlock
# stop inhibiting screensaver
kill $( ps -ef | awk '$0 ~ "gnome-screensaver-command -i" && $NF == "mute-and-lock" { print $2; }' )
fade up # fade volume up and unmute
xset dpms ${dpms} # restore dpms settings
# That's it!

Cheers,

[abhiroopb]

Thanks the update fixed the problem.

The only thing is when I move my mouse and the box shows up to unlock BUT I don't unlock and click cancel the monitor does not switch of and the screensaver is shown.

Any thoughts on that?

[Vermind]

For me, the screensaver also shows in that case; also if I press esc on the unlock screen. However, in several seconds, the screen goes off. If it doesn't for you, I can make this script force it off every 10 seconds with the initial command.

[Vermind]

Hi,
Added two things:

1. It is now possible to force the screen off between $off intervals. Uncomment forceoff in Settings to do this.
2. The script now ensures a smooth dimdown before turning the screen off by giving the lock + volume fade at least 3 seconds of time.

#!/bin/bash
########################################
# mute-and-lock.sh                     #
# Mutes sound and locks the screen     #
# using amixer and gnome-screensaver.  #
# Version 1.02                         #
# -Added DPMS screen turnoff           #
# -Prevent gnome-screensaver from      #
#  turning the screen back on          #
# -Workaround for DPMS timing          #
# -Give screen time to dim down        #
#                                      #
# written by Vermind                   #
########################################

########################################
# Settings                             #
########################################

card=0;           # Sound card. 0 == default, first card.
channel="Master"; # Which volume to control. Examples: Master, PCM, Headphone
step=3;           # Fade step: The volume increment/decrement amount
interval=0.2      # Seconds between increments/decrements when fading
lockdelay=0.5     # How long wait between unlock checks. Smaller values unmute faster
# but use more CPU when locked.
# DPMS settings to use when locked, 0==infinity:
standby=0 # how many seconds of inactivity to wait before screen standby
suspend=0 # before screen suspend
off=10 # before turning the screen off
# Workarounds:
#forceoff=1  # uncomment to have the screen forced off between the dpms off intervals.



########################################
# Functions                            #
########################################

# get current volume
function getvol {
    vol=$( ${m} sget ${channel} | awk '
$0 ~ "%" { 
    if ($4 ~ "%") {
        print $3;
    } else if ($5 ~ "%") { 
    print $4;
    exit 0;
    }
}' )
}

# fades volume up or down
function fade {
    # get current volume
    getvol
    if [ "$1" == "down" ]; then
        # fade down:
        while [ ${vol} -gt 0 ]; do
            sleep ${interval}
            ${m} set ${channel} ${step}- >/dev/null
            let vol-=${step}
        done
        ${m} set ${channel} mute >/dev/null
   else
       # first unmute, then fade up
        ${m} set ${channel} unmute >/dev/null
         while [ ${orig} -gt ${vol} ]; do
            sleep ${interval}
            let vol+=${step}
            if [ ${vol} -gt ${orig} ]; then vol=${orig}; fi
            ${m} set ${channel} ${step}+ >/dev/null
        done
        ${m} set ${channel} ${orig} >/dev/null
   fi
}

function forceoffcheck {
    foacc=$( echo "${lockdelay} +  ${foacc}" | bc ) # lockdelay elapsed
    elapsed=$( echo "${foacc} >= ${off}" | bc ) # off elapsed yet?
    if [ "${elapsed}" == "1" ]; then 
        xset dpms force off;
        foacc=0;
    fi
}

# Returns when the screen has been locked and unlocked
function unlockcheck {
    foacc=0; # forceoff time accumulator
    haslock=
    while true; do
        sleep ${lockdelay}
        locked=$( gnome-screensaver-command -q | grep " active" )
        if [ -n "${haslock}" ]; then
            # lock has happened before. Check unlock and break if unlocked
            if [ -z "${locked}" ]; then break; fi
        fi
        if [ -n "${locked}" ]; then
            haslock="true"
        fi
        if [ "${forceoff}" == "1" ]; then
            echo "forceoffcheck, forceoff=$forceoff"
            forceoffcheck
        fi
    done
}

########################################
# Startup                              #
########################################

# short mixer command with card
m="amixer -c ${card}"
# record original volume value
getvol
orig=$vol

# record original DPMS settings.
dpms=$( xset dpms q | awk '$0 ~ "Suspend" && $0 ~ "Standby" && $0 ~ "Off" { print $2, $4, $6; }' )

########################################
# Procedure                            #
########################################

# set specified DPMS settings:
xset dpms ${standby} ${suspend} ${off}
locktime=$( date +%s )
gnome-screensaver-command -l # lock screen
fade down # fade volume down and mute
let locktime=$( date +%s )-${locktime};
echo "faded down for ${locktime} seconds";
if [ ${locktime} -lt 3 ]; then
    let locktime=3-${locktime}
    echo "giving screen fade ${locktime} seconds more time";
    sleep ${locktime};
fi
xset dpms force off # turn off the screen (directly after lock results in too quick turnoff)
gnome-screensaver-command -i -a "mute-and-lock" & # Stop screensaver from waking up the screen
unlockcheck # wait for unlock
# stop inhibiting screensaver
kill $( ps -ef | awk '$0 ~ "gnome-screensaver-command -i" && $NF == "mute-and-lock" { print $2; }' ) 2>/dev/null
fade up # fade volume up and unmute
xset dpms ${dpms} # restore dpms settings
# That's it!

[abhiroopb]

Thanks for the update.

I checked and realised that you were right after a while the screen does turn off automatically.

Thanks again

EDIT: Annoying little thing (NB: REALLY little thing)....basically when the screen/volume dim-down for a couple of seconds the screensaver shows up. Right now I have set the screensaver to "blank screen", but aesthetically it isn't great. Like I said small thing

[Vermind]

Hi, try to adjust the step, interval, and dimtime variables.
If the toning down of your sound is taking longer than the dim,
increase step or decrease interval. Increased step may mean that you hear the grades when the sound is going down, decreased interval just makes more steps happen in the same time. A lower dimtime adds less time to the clock for dimming, in case volume fade is fast. Try 2 or 1 second.
Also, for those who do not wish to turn down the volume, but want to turn off the screen, change the value of mute from 1 to 0 (mute=0). Sorry I forgot about that use case. Also, now you can specify nomute as a parameter to the script, so you can have two shortcuts: one with the command

/path/to/mute-and-lock.sh

and the other with

/path/to/mute-and-lock.sh nomute

, where the second one does not touch your volume but does turn off and keep off the screen.

#!/bin/bash
################################################################################
# mute-and-lock.sh                                                             #
# Mutes sound and locks the screen using amixer and gnome screensaver.         #
# Version 1.03                                                                 #
#                                                                              #
# -Added DPMS screen turnoff                                                   #
# -Prevent gnome-screensaver from turning the screen back on                   #
# -Workaround for DPMS timing                                                  #
# -Give screen time to dim (dimtime)                                           #
# -Allow no muting (nomute parameter and mute setting)                         #
#                                                                              #
# written by Vermind                                                           #
################################################################################

########################################
# Settings                             #
########################################

mute=1            # Mute the sound while locked. 0=do not mute. 
                  # Note: nomute as parameter overrides this setting.
card=0            # Sound card. 0 == default, first card.
channel="Master"  # Which volume to control. Examples: Master, PCM, Headphone
step=3            # Fade step: The volume increment/decrement amount
interval=0.2      # Seconds between increments/decrements when fading
dimtime=3         # whole numbers only. The time given for the initial screen dim.
lockdelay=0.5     # How long wait between unlock checks. Smaller values unmute faster
                  # but use more CPU when locked.
                  # DPMS settings to use when locked, 0==infinity:
standby=0         # how many seconds of inactivity to wait before screen standby
suspend=0         # before screen suspend
off=10            # before turning the screen off
# Workarounds:
#forceoff=1        # uncomment to have the screen forced off between the dpms off intervals.


########################################
# Functions                            #
########################################

# get current volume
function getvol {
    vol=$( ${m} sget ${channel} | awk '
$0 ~ "%" { 
    if ($4 ~ "%") {
        print $3;
    } else if ($5 ~ "%") { 
    print $4;
    exit 0;
    }
}' )
}

# fades volume up or down
function fade {
    # get current volume
    getvol
    if [ "$1" == "down" ]; then
        # fade down:
        while [ ${vol} -gt 0 ]; do
            sleep ${interval}
            ${m} set ${channel} ${step}- >/dev/null
            let vol-=${step}
        done
        ${m} set ${channel} mute >/dev/null
   else
       # first unmute, then fade up
        ${m} set ${channel} unmute >/dev/null
         while [ ${orig} -gt ${vol} ]; do
            sleep ${interval}
            let vol+=${step}
            if [ ${vol} -gt ${orig} ]; then vol=${orig}; fi
            ${m} set ${channel} ${step}+ >/dev/null
        done
        ${m} set ${channel} ${orig} >/dev/null
   fi
}

function forceoffcheck {
    foacc=$( echo "${lockdelay} +  ${foacc}" | bc ) # lockdelay elapsed
    elapsed=$( echo "${foacc} >= ${off}" | bc ) # off elapsed yet?
    if [ "${elapsed}" == "1" ]; then 
        xset dpms force off;
        foacc=0;
    fi
}

# Returns when the screen has been locked and unlocked
function unlockcheck {
    foacc=0; # forceoff time accumulator
    haslock=
    while true; do
        sleep ${lockdelay}
        locked=$( gnome-screensaver-command -q | grep " active" )
        if [ -n "${haslock}" ]; then
            # lock has happened before. Check unlock and break if unlocked
            if [ -z "${locked}" ]; then break; fi
        fi
        if [ -n "${locked}" ]; then
            haslock="true"
        fi
        if [ "${forceoff}" == "1" ]; then
            echo "forceoffcheck, forceoff=$forceoff"
            forceoffcheck
        fi
    done
}

function muteandlock {
    locktime=$( date +%s )
    gnome-screensaver-command -l # lock screen
    if [ "${mute}" == "1" ]; then
        fade down # fade volume down and mute
    fi
    if [ ${dimtime} -gt 0 ]; then
        let locktime=$( date +%s )-${locktime};
        echo "faded down for ${locktime} seconds";
        if [ ${locktime} -lt ${dimtime} ]; then
            let locktime=${dimtime}-${locktime}
            echo "giving screen fade ${locktime} seconds more time";
            sleep ${locktime};
        fi
    fi
    xset dpms force off # turn off the screen (directly after lock results in too quick turnoff)
}

########################################
# Startup                              #
########################################

if [ -n "${1}" -a "${1}" == "nomute" ]; then
    mute=0;
fi

if [ "${mute}" == "1" ]; then
    # short mixer command with card
    m="amixer -c ${card}"
    # record original volume value
    getvol
    orig=$vol
fi

# record original DPMS settings.
dpms=$( xset dpms q | awk '$0 ~ "Suspend" && $0 ~ "Standby" && $0 ~ "Off" { print $2, $4, $6; }' )

########################################
# Procedure                            #
########################################

# set specified DPMS settings:
xset dpms ${standby} ${suspend} ${off}
muteandlock # Initial mute and lock of screen
gnome-screensaver-command -i -a "mute-and-lock" & # Stop screensaver from waking up the screen
unlockcheck # wait for unlock
# stop inhibiting screensaver
kill $( ps -ef | awk '$0 ~ "gnome-screensaver-command -i" && $NF == "mute-and-lock" { print $2; }' ) 2>/dev/null
if [ "${mute}" == "1" ]; then
    fade up # fade volume up and unmute
fi
xset dpms ${dpms} # restore dpms settings
# That's it!