Ubuntu – What happens when suspended

shutdownsuspend

I have a laptop – Lenovo T60.

When I close the lid, I see that the machine goes into suspended mode. The moment I open the lid, the laptop is instantly a live.

My concern – Does going into suspended mode make it safe to trasnport the computer – eg: travel on a bumpy road.

I ask because I'm not sure which parts shut off… For example, if the hard drive is still running, I'd say it's never safe to travel with the laptop in this mode.

I'd like some thoughts on this. Thanks!

Best Answer

Suspend writes the info to RAM (memory) & still uses power: drive(s), cpu and the moniter(s) are powered off.
The RAM modules are placed in self refresh mode and the CPU is powered off. The chipset is responsible for using the standby power to stay on enough to reactivate the main power supply when a button is pressed

and if you want to know what hibernate is:

Hibernate writes info to hard drive then powers laptop off.
Hibernate is resumed by pressing the power button.

So in terms of optimising battery life hibernate is better, but can take as much time as powering off, suspend is quicker but still uses power.

And in your question concerning hdd life. You should be able to drive over bumpy roads because the disk drive stops spinning.

Related Solutions

Ubuntu – How to go automatically from Suspend into Hibernate

In Ubuntu 18.04 and newer it much more easier. In systemd is available a new mode suspend-then-hibernate. To start using this function you need to create a file /etc/systemd/sleep.conf with the next content:

[Sleep]
HibernateDelaySec=3600

Then you can test it by command:

sudo systemctl suspend-then-hibernate

you can edit HibernateDelaySec to reduce delay to hibernate.

If all works fine you can change Lid Close Action, to do it you need to edit the file /etc/systemd/logind.conf

You need to find option HandleLidSwitch=, uncomment it and change to HandleLidSwitch=suspend-then-hibernate. Then you need to restart systemd-logind service (warning! you user session will be restarted) by the next command:

sudo systemctl restart systemd-logind.service

That's all! Now you can use this nice function.

Ubuntu – 18.04 does not shutdown, it goes into suspend modus

I solved it :) finally

steps:

sudo apt-get update && sudo apt-get install laptop-mode-tools

that caused a automatic update popup from ubuntu after having pressed ok button it was something installed, I am posting the log file from this time (of course most of these updates are not related to this issue, but anyway)

-rw-r--r-- 1 root root     224 Mai 17 21:33 rfkill.list
-rw-r--r-- 1 root root    1915 Mai 17 21:33 python3-launchpadlib.list
-rw-r--r-- 1 root root    2058 Mai 17 21:33 python3-lazr.restfulclient.list
-rw-r--r-- 1 root root     653 Mai 17 21:33 python3-oauth.list
-rw-r--r-- 1 root root    4115 Mai 17 21:33 python3-zope.interface.list
-rw-r--r-- 1 root root    1218 Mai 17 21:33 python3-wadllib.list
-rw-r--r-- 1 root root    2973 Mai 17 21:33 python3-simplejson.list
-rw-r--r-- 1 root root    1199 Mai 17 21:33 python3-lazr.uri.list
-rw-r--r-- 1 root root     234 Mai 17 21:33 php7.2.list
-rw-r--r-- 1 root root     423 Mai 17 21:33 libpoppler73:amd64.list
-rw-r--r-- 1 root root     293 Mai 17 21:33 libpoppler-glib8:amd64.list
-rw-r--r-- 1 root root     920 Mai 17 21:33 poppler-utils.list
-rw-r--r-- 1 root root     292 Mai 17 21:33 libpoppler-qt5-1:amd64.list
-rw-r--r-- 1 root root     473 Mai 17 21:33 libcurl3-gnutls:amd64.list
-rw-r--r-- 1 root root    2365 Mai 17 21:33 php7.2-common.list
-rw-r--r-- 1 root root     613 Mai 17 21:33 php7.2-cli.list
-rw-r--r-- 1 root root     679 Mai 17 21:33 libapache2-mod-php7.2.list
-rw-r--r-- 1 root root     478 Mai 17 21:33 php7.2-curl.list
-rw-r--r-- 1 root root     292 Mai 17 21:33 libcurl4:amd64.list
-rw-r--r-- 1 root root     454 Mai 17 21:33 php7.2-gd.list
-rw-r--r-- 1 root root     478 Mai 17 21:33 php7.2-json.list
-rw-r--r-- 1 root root     646 Mai 17 21:33 php7.2-mysql.list
-rw-r--r-- 1 root root     514 Mai 17 21:33 php7.2-opcache.list
-rw-r--r-- 1 root root     526 Mai 17 21:33 php7.2-readline.list
-rw-r--r-- 1 root root     882 Mai 17 21:33 php7.2-xml.list
-rw-r--r-- 1 root root     466 Mai 17 21:33 php7.2-bz2.list
-rw-r--r-- 1 root root     526 Mai 17 21:33 php7.2-mbstring.list
-rw-r--r-- 1 root root     466 Mai 17 21:33 php7.2-zip.list
-rw-r--r-- 1 root root    1198 Mai 17 21:33 gnome-terminal.list
-rw-r--r-- 1 root root   30284 Mai 17 21:33 gnome-terminal-data.list
-rw-r--r-- 1 root root     486 Mai 17 21:33 nautilus-extension-gnome-terminal.list
-rw-r--r-- 1 root root    2278 Mai 17 21:33 gnome-software-common.list
-rw-r--r-- 1 root root    4266 Mai 17 21:33 gnome-software.list
-rw-r--r-- 1 root root     241 Mai 17 21:33 command-not-found-data.list
-rw-r--r-- 1 root root     749 Mai 17 21:33 python3-commandnotfound.list
-rw-r--r-- 1 root root     400 Mai 17 21:33 command-not-found.list
-rw-r--r-- 1 root root     810 Mai 17 21:33 uuid-runtime.list
-rw-r--r-- 1 root root    1004 Mai 17 21:33 mount.list
-rw-r--r-- 1 root root       0 Mai 17 21:33 linux-image-4.13.0-41-generic.list
-rw-r--r-- 1 root root     384 Mai 17 21:33 linux-image-extra-4.13.0-41-generic.list
-rw-r--r-- 1 root root       0 Mai 17 21:33 linux-signed-image-4.13.0-41-generic.list
-rw-r--r-- 1 root root       0 Mai 17 21:33 linux-image-4.13.0-39-generic.list
-rw-r--r-- 1 root root     384 Mai 17 21:33 linux-image-extra-4.13.0-39-generic.list
-rw-r--r-- 1 root root       0 Mai 17 21:33 linux-signed-image-4.13.0-39-generic.list
-rw-r--r-- 1 root root   10305 Mai 17 21:33 util-linux.list
-rw-r--r-- 1 root root     301 Mai 17 21:33 fdisk.list
-rw-r--r-- 1 root root     262 Mai 17 21:33 libsmartcols1:amd64.list
-rw-r--r-- 1 root root     242 Mai 17 21:33 libmount1:amd64.list
-rw-r--r-- 1 root root     242 Mai 17 21:33 libfdisk1:amd64.list
-rw-r--r-- 1 root root     242 Mai 17 21:33 libblkid1:amd64.list
-rw-r--r-- 1 root root     237 Mai 17 21:33 libuuid1:amd64.list
-rw-r--r-- 1 root root     814 Mai 17 21:33 bsdutils.list
-rw-r--r-- 1 root root     436 Mai 17 21:28 sdparm.list
-rw-r--r-- 1 root root     411 Mai 17 21:28 qt-at-spi:amd64.list
-rw-r--r-- 1 root root    3746 Mai 17 21:28 python-qt4.list
-rw-r--r-- 1 root root     396 Mai 17 21:28 python-sip.list
-rw-r--r-- 1 root root    1724 Mai 17 21:28 net-tools.list
-rw-r--r-- 1 root root     372 Mai 17 21:28 libqtassistantclient4:amd64.list
-rw-r--r-- 1 root root     444 Mai 17 21:28 libqt4-test:amd64.list
-rw-r--r-- 1 root root     732 Mai 17 21:28 libqt4-svg:amd64.list
-rw-r--r-- 1 root root     428 Mai 17 21:28 libqt4-sql-mysql:amd64.list
-rw-r--r-- 1 root root     500 Mai 17 21:28 libqt4-scripttools:amd64.list
-rw-r--r-- 1 root root    1123 Mai 17 21:28 libqt4-help:amd64.list
-rw-r--r-- 1 root root     647 Mai 17 21:28 libqt4-designer:amd64.list
-rw-r--r-- 1 root root     872 Mai 17 21:28 libqt4-declarative:amd64.list
-rw-r--r-- 1 root root    1216 Mai 17 21:28 libqtgui4:amd64.list
-rw-r--r-- 1 root root     500 Mai 17 21:28 libqt4-xmlpatterns:amd64.list
-rw-r--r-- 1 root root     436 Mai 17 21:28 libqt4-sql:amd64.list
-rw-r--r-- 1 root root     723 Mai 17 21:28 libqt4-script:amd64.list
-rw-r--r-- 1 root root     774 Mai 17 21:28 libqt4-network:amd64.list
-rw-r--r-- 1 root root     191 Mai 17 21:28 libqt4-dbus:amd64.list
-rw-r--r-- 1 root root     372 Mai 17 21:28 qdbus.list
-rw-r--r-- 1 root root    1565 Mai 17 21:28 qtchooser.list
-rw-r--r-- 1 root root     439 Mai 17 21:28 libqtdbus4:amd64.list
-rw-r--r-- 1 root root     436 Mai 17 21:28 libqt4-xml:amd64.list
-rw-r--r-- 1 root root    1028 Mai 17 21:28 libqtcore4:amd64.list
-rw-r--r-- 1 root root    1095 Mai 17 21:28 qtcore4-l10n.list
-rw-r--r-- 1 root root    5194 Mai 17 21:28 laptop-mode-tools.list
-rw-r--r-- 1 root root     278 Mai 17 21:28 libmng2:amd64.list
-rw-r--r-- 1 root root      63 Mai 17 21:28 tlp.list
-rw-r--r-- 1 root root     104 Mai 17 21:28 tlp-rdw.list

Best Answer

Related Solutions

Ubuntu – How to go automatically from Suspend into Hibernate

Ubuntu – 18.04 does not shutdown, it goes into suspend modus

Related Question