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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After closing the lid, no screen display and computer hangs. Have to restart everytime.(14.10)

When I lock my laptop and close the lid, and again after sometime,when I open the lid, their is a blank screen with no display and even if I press any key(s), my system does not wake up.I have to ...
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1answer
8 views

how to run scheduled task ,after resume from sleep,only if computer was sleeping at the time of schedule

i have a cron backup job set up, but i would like it to run after resume from sleep, if my computer was asleep at the scheduled time. example: backup script runs every night at 2:00. often i put my ...
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0answers
10 views

Gnome 3.14.4 won't blank the screen / suspend the system due to inactivity

I installed gnome-shell and ubuntu-gnome-desktop on top of Ubuntu and now the automatic suspension doesn't seem to work (I've been using GNOME now for some time and I'm not 100% sure if it worked at ...
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17 views

Laptop does not wake up after suspend

This happens randomly. I have an Hp Pavilion 17: http://www8.hp.com/h20195/v2/GetDocument.aspx?docname=c04511132 When I suspend my laptop (whether by closing the lid or any other way) sometimes it ...
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1answer
18 views

Eeepc Ubuntu 14.04 Problems: Video, audio, screen flicking and suspend failure

I install Ubuntu 14.04 LTS on my Eeepc 1101HA with processor Intel Atom CPUZ520 and I have some problems: Screen is flicking, shacking..... Video doesn-t work, is very slow and impossible to see ...
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0answers
26 views

How to fix 3 min. dalay and suspend problem after instaling ubuntu 15.04 on macbook pro 5.1?

I installed ubuntu 15.04 on my macbook 5.1 (late 2008) and on every reboot I have to wait about 3 minutes to get to the login screen. Also suspend doesn't work when I close lid. Does someone have a ...
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0answers
28 views

Ubuntu 15.04 jumps into standby after login

I upgraded my system from Ubuntu 14.10 to Ubuntu 15.04 flawlessly. But for some reason, it always jumps straight into standby (suspend) mode directly after login. I have to use the notebook's power ...
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0answers
9 views

Who restores the hibernation image on disk?

guys, I'm doing experiment on ubuntu 14.04.2, and try to figure out who is responsible for resuming the system from hibernation. In order to track it, I add some dump_stack in software_resume, which ...
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88 views

Black screen on wake since 15.04 upgrade (ATI)

Similar to this post Black screen on upgrading to 15.04 but since the hardware and conditions are different (Heathrow XT Radeon HD 7870M), I'll start another thread. If I use the fglrx driver, the ...
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0answers
43 views

Double lock screen when resuming after upgrade to 15.04

After the upgrade to 15.04 I now get a double lock screen when I wake up from resume. First there will be a centered GTK grey panel which looks a bit like the old switch user login, after I enter that ...
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0answers
20 views

Ubuntu 15 sleeps before login

I have updated from 14.10 to the recent 15. Since I did so, everytime I am booting, it takes a lot of time in the loading screen and then the computer just goes to sleep. When I power back up, the ...
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0answers
15 views

hibernate after a period of sleep

please, help me finding a way to hibernate Ubuntu after a period of sleep, i usually close the lid and keep the laptop for many days, and I think that this affects the processor
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1answer
79 views

Xubuntu 15.04 goes to sleep when the screen is locked

Since I did the upgrade to 15.04 there is a very strange behaviour whenever I lock the screen. Right after the screen is locked and the monitor turns black the computer goes to sleep (or suspend ...
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0answers
44 views

“Bleached” screen after suspend on iMac with Ubuntu 15.04

Ubuntu 15.04 works fine on my old iMac (Intel, mid 2007) except for suspend/resume. After wakeup the screen appears "bleached" by vertical white lines (half the screen pixels are white). This ...
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0answers
41 views

15.04 Suspend works only once after a restart - Toshiba Click 2 Pro

I had a thread in ubuntuforums.com for the same issue while I was in 14.10. It somehow randomly worked after trying different scripts. With the 15.04 upgrade, the issue simply came back. After a ...
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1answer
17 views

Suspend Ubuntu after 10 minutes but keep awake for certain period

I would like to have my Ubuntu pc suspend after 10 minutes inactivity but it must switch on and remain on from midnight to 6:05 am. Any suggestions?
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62 views

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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0answers
92 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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0answers
8 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
89 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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0answers
19 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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0answers
153 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
320 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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0answers
60 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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0answers
155 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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0answers
100 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
23 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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0answers
10 views

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 ...
2
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1answer
556 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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0answers
71 views

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

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
26 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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0answers
16 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
35 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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0answers
15 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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0answers
58 views

14.10 Black Screen on Resume

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
42 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 ...
3
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0answers
57 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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0answers
13 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
29 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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0answers
23 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
26 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 ...
1
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1answer
41 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" ...
8
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1answer
157 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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0answers
10 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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2answers
24 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
48 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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0answers
47 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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0answers
26 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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0answers
21 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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0answers
38 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). ...