Questions related to Suspend Mode, which is a special low-power mode often used on laptops that preserves the contents of RAM while using less power than normal. Questions related to suspending to disk should use the [hibernate] tag.

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7
votes
4answers
2k views

Suspend when critically low power 11.10

Is there a way to suspend when Ubuntu is at critically low power. The only option in Ubuntu 11.10 power setting is to shutdown or hibernate. I run my battery all the way down till it suspends then i ...
5
votes
1answer
949 views

Laptop shuts down upon waking from suspend

The computer enters suspend either by closing lid, choosing suspend from the top-right drop down, or hitting the power button and pressing suspend. It doesn't matter. I then attempt to wake the ...
17
votes
1answer
1k views

What is the most “Ubuntu” way of preventing certain users from shutting down, suspending etc?

On a traditional Unix system, non-root users cannot do this. What is it that gives users this ability in modern desktop environments and how would I go about disabling this on a per-user or per-group ...
14
votes
5answers
7k views

Blank screen after suspend/hibernate on 14.04

I did a fresh install of ubuntu 14.04. Everything works great except after hibernate/suspend I am getting a black screen. I can use Alt+Ctr+F1 then Ctrl+Alt+Del to restart and the screen comes back ...
12
votes
2answers
1k views

Suspend to RAM and encrypted partitions

Normally I don't shutdown my notebook any more in favour of using suspend-to-RAM. The downside is that my encrypted home partition is completely accessible after resume without entering the ...
11
votes
3answers
565 views

Ubuntu suspends when the lid is closed after pressing shutdown

I am running 12.10. Usually when I am in a hurry I press the shutdown button on the bar and close the lid of my laptop just after that. Often, I observe that instead of shutting down, the system ...
9
votes
1answer
1k views

How to get suspend when idle if no user logged in (lightdm)

I can't figure out how to get Ubuntu 11.10 to suspend when idle from a lightdm login screen. I've found methods to do this from gdm, but even those reference configuration files that aren't present in ...
5
votes
5answers
681 views

How do I get suspend working on an HP DV4T?

Suspend doesn't work on my laptop. When the laptop tries to suspend, the screen turns off briefly, some system-looking text appears for a bit, the screen turns off again, then the screen turns back ...
5
votes
1answer
1k views

No sound after resuming from suspend?

When my system gets to suspension while the song being played, and got resumed from the suspension, I found my Rhythmbox player running but no sound coming even from the system. I had to suspend it ...
4
votes
2answers
3k views

Wifi doesn't work after hibernate but DOES work after suspend

I run Ubuntu 13.10 (though on 13.04 situation was the same) on Thinkpad E125 laptop I have very common problem - there were no WiFi after suspend. I've googled the problem and find solution that ...
4
votes
2answers
668 views

How do I detect when my system wakes up from suspend via DBus or similar in a python app?

In a background Python script I need to detect, when the system just woke up from suspend. What is a good way that does not rely on a root script but rather on python modules such as DBus? I'm new to ...
0
votes
2answers
4k views

Ubuntu 12.04 Installed, monitor turns off after Bios screen

After a little struggling, I managed to install Ubuntu 12.04 LTS I can hear the comp running while the screen is off, it turns off directly after the BIOS screen. I'm very much a newbie to this so ...
16
votes
2answers
19k views

What is suspend?

I saw the option Suspend in Ubuntu. What does it do? I tried this option, but my PC goes to low power mode and then, I can't bring it to a normal condition. So I had to power off my PC.
8
votes
1answer
1k views

Why does Chrome video performance substantially degrade after waking from suspend in 10.10?

Note: For some more details, some of which may not be true given what I've figured out, see this post. When I first boot my computer, video performance (both native H.264 HTML5 in YouTube and Vimeo, ...
7
votes
3answers
1k views

Hibernate and Suspend do not exist anymore, help

When I close the lid of my laptop and open it after some time I am greeted with a message "Failed to suspend". When I tried to manually suspend/hibernate, I saw these options are not available there ...
5
votes
3answers
2k views

Bad DMA/do_IRQ errors on suspend/resume, with occasional freezing

Every time I suspend or resume my laptop (Dell Latitude E6520, bought this year), I get 2 messages of the form displayed on the console just before shutting down/starting up: [ 407.107610] ehci_hcd ...
5
votes
3answers
1k views

How do I inhibit suspend from the command line?

Is there a way to inhibit suspend/hibernate from the command line. I want to ssh into my home computer and not have it suspend while I'm working on it.
3
votes
4answers
3k views

xubuntu 12.04 restarts after suspend - only from my account

After installing a clean xubuntu 12.04 I noticed that when I suspend, the computer suspends and turns itself off (you see the lights go off, and a click sound from the HD or fans), but then about 2 ...
3
votes
7answers
3k views

Lenovo Ideapad s10-3 doesn't resume from suspend

I have recently installed Natty on my Lenovo Ideapad s10-3 netbook. I have a problem: while I'm able to put my computer to suspension, it just won't wake up when I open the lid or press a key (any ...
2
votes
1answer
505 views

Can't login after sleep (Ubuntu 14.04)

I've got Ubuntu 14.04 installed on my laptop (Lenovo Z570), and it is fully updated. The trouble is that when I wake it from a sleep long enough to require entering my password to login, it won't let ...
1
vote
2answers
159 views
+50

Black screen on laptop lid open after update to 15.04

I suspend my laptop by closing the lid, but when I open it my screen stays black, when I should be prompted to enter my xscreensaver password. The screen is "on" because I can switch TTY using ...
1
vote
2answers
1k views

Wireless mouse temporarily freezes (sleeps) on battery power

I have been getting a very annoying problem since recently in Ubuntu 12.04, probably due to another update that did more bad than good... When I resume from sleep on battery power my Lenovo Thinkpad ...
1
vote
2answers
1k views

What is GRUB (2)'s role in the suspend/hibernate process?

I have, like many, problems with suspending/hibernating in Ubuntu. When I resume from suspend the fans start, the HDD led glows steadily, but the screen is off. The only thing I do is hard reboot. No ...
0
votes
0answers
85 views

After Re-opening Laptop, Programs Blink with Each Keystroke, Ubuntu 12.04, Dell Latitude D620

I'm running Ubuntu version 12.04 on Dell D620 laptop and have been for months. Everything has been working fine until a week ago, when suddenly every time I close the laptop and open it again, the ...
7
votes
4answers
4k views

Thinkpad does not wake from sleep - 14.04

On a freshly installed and updated Ubuntu 14.04 my ThinkPad E540 suspends successfully, but won't wake back up - a full reboot is necessary. Moreover, during the suspended state the fan is constantly ...
7
votes
2answers
6k views

How to suspend from command line such that screen is locked?

I'm using Xubuntu 12.04. In the Power Manager, I have checked Extended -> Lock screen when going for suspend/hibernate. If I choose to suspend from the main menu / Panel 1, the screen is locked. ...
6
votes
3answers
5k views

Screen switches off after waking up from suspend

I guess, there are plenty of duplicates of this question, but I didn't find any to be helpful in my particular problem. My story is as follows: I was running Xubuntu 12.04 on a Thinkpad X40 which has ...
5
votes
2answers
617 views

Disable suspend when pressing fn+F4

I have a System 76 laptop with Oneiric. I just tried to turn the volume down using fn+F5 but I accidentally pressed fn+F4 and suspended the system instead. Is there a way to disable that so I won't ...
4
votes
1answer
328 views

Prevent machine from sleeping when SSH connections are on

I am trying to save power by switching desktops to suspend mode when they are inactive. But many desktops are also accessed via SSH by their owners. There is a wakeonlan solution deployed to enable ...
4
votes
3answers
6k views

How to permanently disable sleep/suspend?

Subtly broken is worse than frankly broken... Background: I already disabled suspend in System Settings -> Power. The "Suspend" option still appears on the gear menu (not that I expected it to ...
4
votes
2answers
786 views

14.04: password not accepted after computer wakes up from sleep

If i press Ctrl+alt+L to lock the screen, I can get back in by typing my password. If I put the computer to sleep, wake it back up again, I cannot log in anymore because it says the password is ...
4
votes
1answer
1k views

Suspend and resume isn't working on an ASUS X54CBBK3

I am more or less a complete Linux noob, and using 12.04 for the first time. Everything works great, and I am very happy, but there is one exception: suspend won't resume. Every time I suspend my ...
4
votes
3answers
1k views

Suspend fails and I know the module causing it. What can I do?

My suspend did not correctly since I installed a USB 3 extension card in my PC. Instead of going to S3, the computer just woke up instantly. dmesg gave the hint "usb_dev_suspend+0x0/0x20 returns -2" ...
3
votes
2answers
662 views

Wacom tablet removed after sleep mode

The tablet functionality stops working after I wake my Lenovo Tablet from sleep mode (closing & opening lit). The error message is "Tablet Serial Wacom Tablet (Lenovo X201) removed" (screenshot: ...
3
votes
2answers
3k views

Ubuntu 12.04 not resuming from suspend Zenbook UX32VD

this is the first time I installed Linux so I might be doing a few things wrong. I have Asus Zenbook UX32VD, I separated the SSD and HDD, left Windows 7 on the HDD and Installed Ubuntu (12.04 x86-64) ...
3
votes
1answer
1k views

How to make the clock sync automatically after suspension of a Virtual Machine

I run Ubuntu 10.04 64-bit as a guest OS on a VMWare Player machine over Windows 7. I have the clock displayed in the panel and the location set to my time zone. Occasionally, I close VMWare Player ...
3
votes
2answers
1k views

Why does my laptop restart instead of waking up after resuming from suspend?

My laptop is a Vaio VPCF11M1E, running Ubuntu 10.10 64-bit. After being suspended, I press the power button to wake it up, but it restarts the machine and I lose all my work. I do not have the same ...
3
votes
1answer
491 views

Laptop suspend appears broken, what must I roll back?

Question: What package contains the subprogram responsible for the KMenu option "sleep"? Background: I've been running KUbuntu 10.04.1 and I am completely updated. Recently (within the past month), ...
3
votes
0answers
3k views

No resume after Hibernate or Standby [closed]

When i try to reactivate my notebook after it went to standby or suspend mode the screen stays black. The only solution i have is to reboot the notebook by pressing the shutdown button. Anyone has any ...
2
votes
2answers
61 views

Prevent shutdown when tvheadend recording / KDE session is active

I am searching for a way to prevent shutdown/standby when tvheadend (or vdr) is currently recording. What I found until now is Prevent shutdown when rsnapshot is running: Which I don't like because ...
2
votes
2answers
1k views

Hardware wireless switch has no effect after suspend and 13.10 upgrade

This seems to be a fairly chronic problem, as shown by the following questions: How do I fix a "Wireless is disabled by hardware switch" error? Wireless disabled by hardware switch ...
2
votes
0answers
272 views

How to check what suspends? Lubuntu saucy

I have a Nokia Booklet 3G and I have a problem (not one, actually) with Poulsbo suspend/resume. I installed Lubuntu saucy (beta), which runs smoother than previous versions (it actually boots, unlike ...
2
votes
2answers
5k views

High fan speed and noise after system wakeup in newly install 13.04

I've just installed ubuntu 13.04 on my notebook Compaq 6720s and found the cpu fun working at high speed after waking system up. When the system is booted the fan works normaly and realy calm. But ...
2
votes
0answers
164 views

Xorg intermittently restarts after suspend

I have Ubuntu 12.04 on a Toshiba laptop. About one out of every three times, when waking from suspend, it wakes up normally and works for anywhere from 10-45 seconds, then the screen goes black, then ...
2
votes
0answers
762 views

Doesn't suspend when closing lid on a Dell Inspiron N5110

This is what advanced settings tell me: Shell > Laptop lid close action on battery > Suspend Shell > Laptop lid close action when on AC > Suspend The screen is on when I open the lid after closing ...
1
vote
3answers
930 views

Lenovo X1 Carbon with Ubuntu 14.04 wakes from suspend by itself after 3 hours

My machine seems to wake up from suspend by itself, at irregular intervals. Causing the power to die out, and machine turn off. It is quite the annoyance, when the machine is in my case and it wakes ...
1
vote
2answers
2k views

dual boot: Windows 8 session lost after Hibernate/Sleep

The problem I'm experiencing is losing the Windows 8 session after sleep/hibernate. When resuming the session I would expect to load directly into Windows, however the GRUB bootloader displays. At ...
1
vote
5answers
2k views

Thinkpad T61 won't wake from sleep / suspend 13.04

My laptop is a Lenovo Thinkpad T61 with intel graphics card running 13.04. I'm pretty sure that when my battery gets too low, the laptop suspends itself, but when i plug it back in, it won't come on. ...
1
vote
3answers
2k views

Power & Sleep Management

I'm running 12.10 with xmonad. Trying to ensure that the right things happen when I close laptop lid, etc. I see Internet search results for similar issues that mostly point towards ...
1
vote
2answers
3k views

12.04 rebooting after suspend to disk

I've got a problem with suspend to disk in ubuntu 12.04 (it worked perfectly in 11.10). I've installed the pm-utils package, but whenever I issue: sudo pm-hibernate it appears the screen that ...