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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Vivid Vervet freezes after waking from suspend

After upgrading to Vivid my laptop (Lenovo y5070) freezes when waking from suspend. I cannot get a tty shell and after shutting down and rebooting with the power button, the mouse pointer is ...
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1answer
24 views

Xubuntu login screen glitches/bounces after suspend, session lost

Mayor Edit; nearly all problems now fixed by reinstall of LightDM AND light lock settings + manual download and changing of permissions of expected background of lightDM. Only problem left is no ...
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41 views

Login screen and resume after sleep problems after upgrading to Kubuntu 15.04

After upgrading to 15.04, when I type password on login screen, all texts get bold. And also, when resuming after sleep, screen gets black-white-gray fuzzy geometric figures. After few searches, it ...
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4 views

put sleep back on while in fullscreen videos

I have a question regarding activating sleep while in full screen videos on one of my computers. I looked around in system settings to put it on to no avail. Screensaver settings don't work either... ...
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1answer
32 views

Ubuntu Vivid uses 10-30 seconds to suspend after closing the lid

I have a MacBookAir 6,2 with Ubuntu 15.04 running on it. All the graphics drivers are updated, but when I close the lid it takes about 10-30 seconds before it suspends. This did not happen with ...
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9 views

Does sleep mode limit CPU performance?

I have looked around but couldn't find a definite answer to whether or not sleep/suspend mode affects CPU performance in Ubuntu/Debian. Is there any impact on performance while running in ...
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79 views

Xubuntu 15.04 goes into sleep after powering up

Upgrade from Xubuntu 14.10 to 15.05 (Update history : 13.10 -> 14.04 -> 14.10 -> 15.04). The upgrading worked well. After rebooting the machine (Dell Inspiron 6000 - 10 years old) went automatically ...
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2answers
79 views

15.04 - Closing lid does not suspend laptop if connected to external monitor

Since the upgrade to 15.04, my laptop's behavior on closing lid has changed: if it is connected to an external monitor, it will not suspend. In addition, all the windows are now flushed to the ...
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30 views

pm-hibernate freezes and/or fails to resume on Dell XPS 13, 14.04, 3.19 kernel

I'm running 14.04 on a new XPS 13. In order to support the newer hardware, I'm running a mainline 3.19 kernel. Hibernate resume has been iffy with the entire 3.19 kernel line, but recently (3.19.5) ...
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69 views

After upgrade to 15.04, wrong temperature readings cause fan to go crazy

Since I upgraded to 15.04, twice after I had started it from suspended state Ubuntu would right away start spinning the laptop fan like crazy since it thought that one of the temperatures was 100°C ...
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62 views

Ubuntu shutdown freezes after suspend

I've recently installed Ubuntu 15.04 on my Acer Aspire V3, along with pre-installed Win8.1. During installation, I enabled /home encryption. There is no problem with suspending laptop for the first ...
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1answer
16 views

Yoga 3 Pro black screen on wakeup from sleep [duplicate]

When I wakeup my computer from sleep there is a blank black screen with just the cursor. Has anyone else experienced this problem? Description: Ubuntu 14.04.2 LTS Release: 14.04 Codename: ...
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USB ports stop working after resumming from suspension - Xubuntu 14.04

I have a Lenovo S20-30 laptop (bought in February 2015) and installed Ubuntu 14.04 (then Xubuntu) alongside windows. I don't use Windows now. Everything seems fine except when I suspend the laptop ...
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1answer
147 views

Ubuntu 15.04 suspends ~30 seconds after resume

I just upgraded yesterday to 15.04 from 14.10 using sudo do-release-upgrade -d. My computer suspends and resumes with no trouble, however every time I resume, after about 30 seconds the computer goes ...
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46 views

System problem and should I uninstall Vivid kernel 4.0 from Trusty?

Last night, I suspended Ubuntu. This morning when I tried to wake it up by lifting my laptop top, it failed as the "sleep" led indicator changes from on to off and the "Power on" led indicator tilted ...
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1answer
22 views

sleep getting hang in shell script

I had a cron script running on my Ubuntu PC ( 12.04.3 ) which periodically checks for disk space. There was a "sleep 5" also used in this script. This system was up for a month, but an issue is ...
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14 views

ubuntu can not boot after suspend

If I suspended ubuntu, it can be waked up and works well. But I can't restart it, there would be a black screen with a cursor blinking. If I insert the live-usb and reboot with it, then try ubuntu, ...
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1answer
30 views

Ubuntu Shutdown Timeout too short

I am using Ubuntu 14.04.2. I have Virtual Box 4.3.26 installed running a headless CentOS VM. I use the vboxautostart-service to start and save the virtual box at startup and shutdown as described ...
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13 views

suspended HDD spins up before system suspend

I'm booting Ubuntu 14.10 from the SSD ("sdb") in my notebook. As a second drive I have an HDD ("sda") which is kept on standby via entry in /etc/hdparm.conf: /dev/sda { poweron_standby = on ...
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27 views

14.10 Black Screen on Resume [duplicate]

I recently installed 14.10 on my dell latitude e6510. The machine is running an i5-540m, NVS3100M, Vertex turbo SSD, 6GB RAM, and an intel wifi link 5100AGN wireless card. Every few resumes from ...
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1answer
31 views

This session is locked - problem

When I try to login after resuming from a suspend, I get this message with a huge lock icon. This session is locked - you will be redirected to the unlock dialog automatically in a few seconds ...
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36 views

How to prevent an unintended resume from suspend (Lenovo x240)?

Updated 2015-04-19, 15:56 - I am using a Lenovo x240 notebook and the problem is valid for Ubuntu 14.04 and 14.10 at least. General description of the problem If I close the notebook's lid the ...
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12 views

Wakes into comatose state from suspend

I am running 14.04 from a USB stick on an ASROCK MOBO. When I put the system into suspend, it successfully stays in suspend, but when I jostle the mouse or press keys on the keyboard, it fires up the ...
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1answer
25 views

Like Mac. Close Tap (lid) and active hybrid-suspend 14.04

I would like to configure my OS, to Close the lid of the laptop, block the access and later of 10 or 20 minute active hybrid-suspend. someone can help?.. I know to close the lid and active the ...
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21 views

WiFi Drops Out after Suspend

I have a Fujitsu Siemens V5535 loaded with ubuntu 14.10. Of course, it's a netbook, and I'm pretty happy with how it's survived, despite all I've put it through. So overall, I'm pretty happy with it, ...
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1answer
21 views

Resume from suspend not working on Macbook Pro 5,5 with Nouveau

Resume from suspend used to work perfectly on my Macbook Pro 5,5. I was using the Nvidia graphics driver, which had really bad support for OpenGL, so I purged the Nvidia driver switched to the open ...
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1answer
33 views

Web video (YouTube, etc) doesn't play in Chrome after suspend

I'm running Ubuntu 14.10 and nvidia-346 driver After a suspend, all websites doesn't play video in Chrome. Firefox appears to still play video. The video still loads. If I "click forward in time" ...
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1answer
130 views

How do I stop the screen from being locked on resume on Kubuntu/KDE?

Per How do I stop the screen from being locked on suspend? I want to be able to sleep and resume without the screen locking. All the previous answers seem to involve fairly Gnome-specific things that ...
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65 views

No Suspend option in Cinnamon after migration to Ubuntu Vivid 15.04 [closed]

Suspend was working perfectly until right before the migration to Ubuntu Vivid 15.04. I had the Suspend menu option, and the computer would suspend when the lid close. Right after migration, my ...
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9 views

Ubuntu 14.04.1 LTS nic seems to to go to sleep or hibernate

We have this virtual computer but it seems to either go to sleep or hibernate when idle. We dont have any issues with our other VMs on this host but they are Windows. If someone is in it or working ...
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1answer
15 views

Unsuspend process that was not launched from terminal

I start emacs from my init script upon login. Every now and then I accidentally suspend it with ctrl+z, and I don't know how to recover from that. Had I started from the terminal, jobs and fg would ...
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2answers
42 views

Problem with “suspend”

A few months ago I bought a Dell PowerEdge T320 (Intel Xeon E5-2403) which came with Windows Server 2012. I removed that and installed Ubuntu. But in Ubuntu when I try to put the system to suspend, it ...
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42 views

Ubuntu 14.04 problems with suspend and hibernate while using NVIDIA profile instide of intel profile

First I hope it isn't duplicated question... but I have been searching for a week but no solution for my problem. I have HP laptop with Hybrid graphics for Intel and Nvidia I enabled hibernate when ...
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24 views

Ubuntu sleeps when power cable is removed

I just installed Ubuntu 14.04 on a Macbook 5,2. It works fairly well except that when the power cable is unplugged the desktop logs out, prompting the password menu and in less than a second the ...
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19 views

CUDA not working after returning laptop from sleep

I have installed cuda 7 toolkit with newest driver, and it passed all the tests, it seems that driver is loaded, but every time when I just put my laptop to sleep, and wake it up from sleep, cuda ...
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33 views

Chrome GPU process crashes after resume from suspend

When i launch Chrome hardware acceleration works fine. Checking with chrome://gpu i get "Hardware accelerated" on all features (i have Override software rendering list flag enabled in chrome://flags). ...
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14 views

Gnome Blank Screen Power Setting Option

I am using Ubuntu Gnome 14.10 and I am having problems with the blank screen option. I expect Gnome to blank the screen and lock my computer when I close the lid. However, it somehow suspends the ...
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26 views

ubuntu hangs after installing nvidia driver

I installed ubuntu 14.1 few days ago and today changed Nvidia driver to this I noticed that after that ubuntu got slower, cooler got noisier and hotter also...But, main problem is that system hangs ...
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49 views

Dell e7440, sleep sometimes fails, kernel logs show ACPI errors

I have a new Dell Latitude E7440 with Ubuntu 14.04.2. Sometimes (but not always), after sleeping, I cannot resume, as after trying to resume one of the following happens: I can move the mouse but ...
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39 views

Wacom can't detected after suspend. After USB reconnection it works again but without ExpressKeys support

I'm use "Wacom Intuos Pro M" on Ubuntu GNOME vivid uname -a && lsb_release -a Linux MY-PC 3.19.0-10-generic #10-Ubuntu SMP Mon Mar 23 16:25:20 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux No LSB ...
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16 views

Desktop freezes when Suspend is clicked

When I open the Power Menu in the top right and click Suspend, the computer immediately freezes. I am left unable to use the mouse or keyboard, and the Suspend menu item stays selected but nothing ...
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17 views

LDAP network connection lost when lid is closed Ubuntu 14.04.2

I have a question about suspend process. I installed Ubuntu 14.04.2 and LDAP client on my laptop, when I logged in via my LDAP user and close laptop's lid and when I open lid of laptop my network ...
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11 views

Suspend not working Panasonic Toughbook CF-29

I've tried a few different versions of Ubuntu now on my Panasonic Toughbook CF-29, and one thing I can't seem to get to work with any of them (12.04 - 15.04) is the suspend feature. I close the laptop ...
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24 views

How to remove the “gnome friendly” way to suspend from the command line

I tried to follow this post to allow me to suspend my computer from the terminal: How can I suspend/hibernate from command line? However, this has ended up screwing my system as now I'm unable to ...
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23 views

ubuntu 14.10 issue with suspend

I have a Acer Aspire E5-571G-52FL and when try to suspend (when lid is closed for example) it not wake up after that. Only black screen and nothing. Could you please help? Thanks! 3.16.0-33-generic
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27 views

Battery drains fast when it is suspended

I installed Ubuntu MATE 14.04 around a weak ago, and have had some problems. When I suspend the computer, it still drains battery faster than I think is correct. The battery is supposed to last ...
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17 views

Can't open google chrome after suspend

I installed Ubuntu MATE 14.04 around a weak ago, and have had some problems. Sometimes I can't open the google chrome I have, when I log on after it has been suspened. When I click on the google ...
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0answers
20 views

Networkproblems after suspend

I installed Ubuntu MATE 14.04 around a weak ago, and have had some problems. Sometimes after it has gone into suspend by itself (black screen and I have to log in again), the network won't work. This ...
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44 views

can't wake up after suspension

I suspended Ubuntu 14.04 on Thinkpad T400 last night, but this morning when I tried to wake it up, I heard a little sound which is normal when it wakes up, and then the screen keeps black as if it ...
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39 views

Problems with mi WiFi connection

I would like to ask you for help with my WiFi connection. My problem looks like this: After I turn on my laptop or after reboot everything works fine. But after suspend my WiFi works about 6 ...