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Ubuntu 20.04 has decided we need 4 clicks to shut down:
Let's cut out at least 2 clicks here... how?
UPDATE: This is a "Lounge PC" - operated by mouse (no power button within reach as the laptop is closed). We watch a film, we want to click to shutdown and not type commands.
You can easily make it 2 clicks:
Now click the physical power button on your device and then select power off from the prompt - that is 2 clicks (1 if you don't count pressing the power button as a click).
Reduce by two clicks
Option 1) Install the Poweroff Button on Topbar extension by Darknico. It adds a separate Power button on the right of the top bar.
Option 2) Create a "regular" launcher for "Power Off" (with thanks to pomsky). Either:
You may reduce with one more click by substituting the command in the launcher with "poweroff". Then, a single click on the launcher will immediately shut down the machine without confirmation dialog.
Reduce by one click
Option 3) Use the extension Bring Out Submenu Of Power Off/Logout Button by Pratap, or Simpler Off Menu by K3rcus. These extensions bring the items in the "Power Off/Log Out" submenu directly into the system menu, allowing to access them with one less click.
gnome-session-quit --power-off command so that the user gets the confirmation dialog after clicking the shutdown icon. The process can be reduced by one step more by changing the Exec line to something like Exec=shutdown now. Then the system would shut down immediately after clicking the shutdown icon without showing any confirmation dialog.
poweroff will do), but it becomes the heck dangerous with the launcher approach. A single wrong click immediately would take the system down.
gnome-session-quit command instead in that answer. I just mentioned this point purely with respect to the "reducing number of steps as far as possible" aspect.
Getting it down to 1 "click" (technically a button press):
By default, ubuntu shuts down the machine when you press the power button.
Then just wait 60 seconds for the machine to power off instead of clicking again.
I have the habit of creating my own keyboard shortcut to shutdown the PC because this is lot easier and less painful.
I have used too many buttons to avoid any accidental shutdown.
You can decrease it and make it like Super+P or something like that if you are careful enough.
The answer is 0.
Install KShutdown, specify how long are you going to be online. As long as you stick to the plan and not mess with the time and save whatever you're doing 2 minutes prior. The machine will turn itself off, without you even touching it.
If you want to write your own command, start the terminal and type:
sudo shutdown -h +30
+30 (minutes) is an example. Change it to however long you want to stay online. And if you want the machine to turn itself off at a specific time, try:
sudo shutdown -h 20:30
(time is hypothetical, change it to whatever you want).
Note: Without the -h or -r switch it isn't a valid command.
0 clicks, a few clacks.
An alternative solution that doesn't require a mouse (just keyboard):
This brings up a terminal window.
halt and init 0 both have fewer "clacks" than poweroff.
Jun 11, 2020 at 6:07
tvpowered (TV controls power to the computer) is a bash script that automatically suspends laptop when Sony Bravia TV is powered off. Additionally it will:
Please note this only works with Sony Bravia TVs.
When TV is turned off tvpowered automatically suspends, hibernates or powers off the laptop. Change the setting of SCTL global variable to control which action is taken.
tvpowered should be run as a normal user and called in Startup Applications.
Program design is straight forward:
In between these steps pop-up bubble messages appear on Desktop and are also logged to journalctl:
$ journalctl -xe | grep tvpower
Jun 11 18:11:20 tvpowered[27398]: TV is powered on. 'tvpowered' is now waiting for TV to power off.
Jun 11 18:11:47 tvpowered[28229]: TV Powered off. 'systemctl suspend' being called.
Jun 11 18:11:47 tvpowered[28238]: System powered back up. Checking if TV powered on. './tvpowered'.
Jun 11 18:12:26 tvpowered[31672]: TV is powered on. 'tvpowered' is now waiting for TV to power off.
tvpowered scriptCopy and paste the script into a file on your computer and mark it executable with:
chmod a+x /path/to/tvpowered
Where /path/to/ is the directory name you created the file in.
You can also user your file manager (like Nautilus) to make the file executable.
In the script below there are a few constants you will need to set:
SCTL=suspend # systemctl paramater: suspend or poweroff
IP=192.168.0.16 # IP address for Sony TV
PWRD=123 # Password for Sony TV IP Connect
tvpowered complete bash script#!/bin/bash
# NAME: tvpowered
#
# Original name slave2tv announced as politically incorrect after one day:
# https://www.rt.com/news/491343-microsoft-coding-blacklists-slaves/
#
# DESC: When TV is powered off automatically suspend the laptop.
# DATE: June 9, 2020. Modified December 31, 2020
#
# NOTE: Written for Ask Ubuntu question:
# https://askubuntu.com/questions/1247484/
# 4-clicks-to-shut-down-ubuntu-can-we-reduce-this
# UPDT: Jun 10 2020: Make name politically correct for Microsoft guidelines.
# Change name from 'slave2tv' to 'tvpowered'. Abandon approach of polling
# i2c, drm, i915, nvidia, xrandr, etc to see if monitor turned off. Setup
# WiFi on TV instead and use Sony REST API to communicate TV status.
# Jun 11 2020: Add pop-up bubble status messages. Add dependencies.
# Add TenMinuteSpam. Add WaitUserSignOn. Add $SCTL constant. Convert
# in-line code to mainline format.
# Oct 03 2020: If ethernet disconnected we don't want to suspend.
# Add TenMinuteSpam. Add WaitUserSignOn. Add $SCTL constant. Convert
# in-line code to mainline format.
# Oct 18 2020: If WiFi disconnected we don't want to suspend.
# Dec 23 2020: After resume turn off picture with power savings.
# Dec 31 2020: Fast popping bubble messages when volume changes.
# Sources:
# https://gist.github.com/kalleth/e10e8f3b8b7cb1bac21463b0073a65fb#cec-sonycec
# https://pro-bravia.sony.net/develop/integrate/rest-api/spec/service/audio/v1_0/setAudioVolume/index.html
# https://developer.sony.com/develop/audio-control-api/get-started/http-example#tutorial-step-2
# https://en.wikipedia.org/wiki/CURL
# https://stackoverflow.com/questions/7172784/how-do-i-post-json-data-with-curl
# https://stackoverflow.com/questions/2829613/how-do-you-tell-if-a-string-contains-another-string-in-posix-sh
SCTL=suspend # systemctl paramater: suspend or poweroff
IP=192.168.0.16 # IP address for Sony TV
PWRD=123 # Password for Sony TV IP Connect (Pre-Shared key)
# Must have curl package.
command -v curl >/dev/null 2>&1 || { echo >&2 \
"'curl' package required but it is not installed. Aborting."; \
exit 2; }
# Must have notify-send from libnotify-bin package
command -v notify-send >/dev/null 2>&1 || { echo >&2 \
"libnotify-bin package required but it is not installed. Aborting."; \
exit 3; }
cURLit () {
# $1 = JSON String in pretty format converted to file for cURL --data.
# $2 = Sony subsystem to talk to, eg accessControl, audio, system, etc.
# 3 = variable name to receive reply from TV
local TEMP Result ReturnState
# Declare mathres as reference to argument 3 provided (Bash 4.3 or greater)
declare -n Result=$3 # ERROR: declare: `': not a valid identifier
# Create temporary file in RAM for curl command
TEMP=$(mktemp --tmpdir json.XXXXXXXX)
echo "$1" > "$TEMP"
# -s = silent
Result=$(curl -s -H "Content-Type: application/json; charset=UTF-8" \
-H "X-Auth-PSK: $PWRD" \
--data @"$TEMP" \
http://$IP/sony/"$2")
#echo "Result: $Result" # Remove leading # for debugging
ReturnState="$?"
# TO-DO: check $? and if non-zero pop up dialog with $TEMP contents
rm "$TEMP"
} # cURLit
GetPowerStatus () {
local Reply ReturnState
# Copy and paste JSON strings from Sony website:
# https://pro-bravia.sony.net/develop/integrate/rest-api/spec/service/system/v1_0/getPowerStatus/index.html
JSONstr='{
"method": "getPowerStatus",
"id": 50,
"params": [],
"version": "1.0"
}'
cURLit "$JSONstr" "system" Reply # No $ for Reply variable! pass pointer
ReturnState="$?"
#echo "Reply: $Reply" # Remove leading # for debugging
# Reply: {"result":[{"status":"active"}],"id":50}
# or: {"result":[{"status":"standby"}],"id":50}
# Does 'active' substring exist in TV's reply?
[[ "${Reply#*active}" != "$Reply" ]] && return 0
# TV is turned off
# Might want timer tests to make sure we aren't repeatedly turning off
return 1
} # GetPowerStatus
GetVolume () {
# Copy and paste JSON strings from Sony website:
# https://pro-bravia.sony.net/develop/integrate/rest-api/spec/service/audio/v1_0/getVolumeInformation/index.html
JSONstr='{
"method": "getVolumeInformation",
"id": 33,
"params": [],
"version": "1.0"
}'
# Then pass string to cURL for execution
cURLit "$JSONstr" "audio" Reply
# Sample output:
# Volume:, {"result":[[{"target":"speaker","volume":44,"mute":false,
# "maxVolume":100,"minVolume":0},{"target":"headphone","volume":15,
# "mute":false,"maxVolume":100,"minVolume":0}]],"id":33}
Start="${Reply:41:4}"
Volume=${Start%,*}
return $Volume
} # GetVolume
log () {
logger --id=$$ -t "tvpowered" "$1"
} # log
WaitForSignOn () {
# tvpowered might be loaded during boot. The user name is required
# for sending popup bubble messages and dialogs to screen. We must
# wait until user signs on to get .Xauthority file settings.
# code lifted from eyesome.sh
SpamOn=10 # Causes 10 iterations of 2 second sleep
SpamContext="Login"
TotalWait=0
# Wait for user to sign on then get Xserver access for xrandr calls
UserName=""
while [[ $UserName == "" ]]; do
# Find UserName currently logged in.
UserName="$(who -u | grep -F '(:0)' | head -n 1 | awk '{print $1}')"
[[ $UserName != "" ]] && break
sleep "$SpamLength"
TotalWait=$(( TotalWait + SpamLength ))
done
if [[ $TotalWait != "0" ]] ; then
log "Waited $TotalWait seconds for $UserName to login."
xhost local:root
export XAUTHORITY="/home/$UserName/.Xauthority"
fi
} # WaitForSignOn
LastVolume=0
CurrVolume=0
TenMinuteSpam () {
# If TV not powered up Spam user for 10 minutes that 'tvpowered' is running
# and will shut down / suspend system
WaitForSignOn # Might be called by root during boot before user signed on.
Cnt=0
while : ; do
GetPowerStatus
if [[ "$?" == "0" ]] ; then
log "TV is powered on. 'tvpowered' is now waiting for TV to power off."
break
else
# Spam user every 60 seconds
(( $(( Cnt % 20 )) == 0 )) && \
notify-send --urgency=critical "tvpowered" \
-h string:x-canonical-private-synchronous:startup \
--icon=/usr/share/icons/gnome/48x48/devices/display.png \
"TV not communicating.\n Checking TV again..."
fi
sleep 3
(( Cnt++ ))
done
GetVolume
LastVolume="$?"
notify-send --urgency=critical "tvpowered" \
--icon=/usr/share/icons/gnome/48x48/devices/display.png \
"Fully activated.\n System will $SCTL when TV powered off. Volume: $LastVolume"
return 0
} # TenMinuteSpam
###################################
# MAINLINE #
###################################
Main () {
echo "$0: Initialization. Ensuring TV is powered on before starting."
TenMinuteSpam
echo "$0: Fully activated. Waiting for TV to powered off and then $SCTL."
echo "$0: LastVolume: $LastVolume"
Cnt=0
FirstTime=true
VolumeCnt=0 # TV Remote changed volume, so shrorter sleep
while : ; do
#etherup=$(cat /sys/class/net/e*/carrier) # Returns 1 even disconnected
#wifi_up=$(cat /sys/class/net/w*/carrier)
#if [[ $etherup <> "1" && $wifi_up <> "1" ]] ; then
state=$(nmcli -f STATE -t g) # Network manager takes .5 CPU
if [[ $state == disconnected ]] ; then
# Spam user every 60 * Cot seconds
notify-send --urgency=critical "tvpowered" \
-h string:x-canonical-private-synchronous:startup \
--icon=/usr/share/icons/gnome/48x48/devices/display.png \
"Internet not up.\nChecking Ethernet and/or WiFi state again..."
sleep $((Cnt * 60))
(( Cnt++ ))
continue
else
Cnt=0 # Reset timer for next loop
fi
GetPowerStatus
if [[ "$?" != "0" ]] ; then
state=$(nmcli -f STATE -t g) # Network manager takes .5 CPU
if [[ $state == disconnected ]] ; then
echo "Unexpected disconnect, aborting suspend."
else
log "TV Powered off. 'systemctl $SCTL' being called."
systemctl "$SCTL"
log "System powered back up. Checking if TV powered on. '$0'."
sleep 10 # Give system time to wake from suspend
TenMinuteSpam
/home/rick/sony/pictureoff.sh
fi
fi
GetVolume
CurrVolume="$?"
# echo CurrVolume: $CurrVolume LastVolume: $LastVolume
if [[ "$CurrVolume" != "$LastVolume" ]] ; then
# Ask Ubuntu: https://askubuntu.com/a/871207/307523
notify-send --urgency=critical "tvpowered" \
-h string:x-canonical-private-synchronous:volume \
--icon=/usr/share/icons/gnome/48x48/devices/audio-speakers.png \
"Volume: $CurrVolume"
LastVolume=$CurrVolume
VolumeCnt=10
# TODO: Process VolumeCnt internally in loop instead of larger loop
fi
if [[ $VolumeCnt > 0 ]]; then
(( VolumeCnt-- ))
SleepTime=.01
else
SleepTime=2.5
fi
sleep $SleepTime
# Next iteration
FirstTime=false
done
exit 0
} # Main
Main "$@"
I was inspired by OP's question and never realized how cumbersome and time-consuming my end of day suspend process used to be:
tvpowered has eliminated time consuming steps 1. through 4.
For nighttime viewing, there is a light behind the TV. Whenever the laptop goes to sleep, it first shuts off the light.
Create the script /etc/NetworkManager/dispatcher.d/pre-down.d/smartplug_off and place into it:
#!/bin/bash
# NAME: smartplug_off
# PATH: /etc/NetworkManager/dispatcher.d/pre-down.d
# DESC: Turn off smartplug light power for TV light
# DATE: March 7, 2020.
# CALL: Called by Network Manager before going down. Network manager in turn
# is called by systemd during suspend/hibernate/shutdown
# NOTE: myisp.sh and hs100.sh must be installed for hs100 tp-link power plug.
# https://developer.gnome.org/NetworkManager/stable/NetworkManager.html
PlugName="192.168.0.15"
status=$(hs100.sh -i "$PlugName" check | cut -f2)
if [ $status == "OFF" ] ; then
: # Nothing to do already off
elif [ $status == "ON" ] ; then
hs100.sh -i "$PlugName" off
else
echo Error hs100.sh not responding check connection and IP "$PlugName".
fi
I have a laptop by my television that I access with a wireless keyboard/touchpad device. I also keep the lid closed as well.
What I did is add a simple gnome extension called Gnome-Shutdown-Button. You can find a ton of these extensions at https://extensions.gnome.org/
It opens a dialogue that says "shutting down in 30 seconds" (it might be less) and offers a second option to shut down now.
in terminal shutdown now do the trick for me
poweroffand press the Enter key. I find this more convenient than those 4 clicks to shutdown.