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Questions tagged [suspend]

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.

Suspend (to RAM) is a power saving mode. The machine state is held in RAM with the minimum of power needed to preserve all data. When the user wants to continue the session, they should be able to resume from suspend instantly.

Many laptops activate suspend mode automatically when the lid is closed while running on battery, or can be configured to do so. Suspend can also be activated through a GUI button or on the command line - for example, in versions of Ubuntu that use systemd, such as 16.04, suspend can be activated using the systemctl interface

A related tag is which refers to the open standard for power management interfaces. Suspend as defined by ACPI is "S3"

3848 questions
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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 disappear), and the sleep (moon) button on my keyboard…
Veiokej
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37
votes
2 answers

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.
user
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3 answers

How to debug suspend?

I've been using Ubuntu for about five years now, and I still can't make it suspend when I want to. It's quite irritating that I can program up a storm, hack the machine in numerous other ways, and yet, and yet when I try to make it suspend or debug…
mlissner
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2 answers

How can I figure out why Suspend sometimes fails?

Something is causing suspend crash occasionally. When it does crash, the system freezes with a black screen and stays on, not suspending. This makes me have to hold the power button until the system shuts down. One setting difference I have from…
Isaac
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20
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2 answers

Wake laptop when lid is opened?

I have a SAMSUNG laptop, which by the experience in the last months, has been a great one. I am actually implementing some functionality to it, and since I noticed, I am able to wake up my laptop from sleep by just opening the lid on Windows 7,…
crackout12
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18
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1 answer

How does ubuntu determine inactivity before suspending?

I have set it to "suspend when inactive" after 30 minutes. How does it determine whether it is inactive? Is it just user input via keyboard/mouse? If I leave a program working away - say processing a video, which takes a long time, will it…
Jazz
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18
votes
4 answers

Prevent sleep if CPU usage is high

Is there a simple way to prevent the PC from going to sleep if there is high CPU activity? I need to run long processes overnight, so I want the PC to stay up while my processes are running, without any user activity, but when the processing is…
thebucc
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16
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Ubuntu becomes quite laggy after wake up

I'm running Ubuntu 15.04 on my UX32A Zenbook Prime with Intel® Core™ i5-3317U CPU @ 1.70GHz × 4 processor and Intel® Ivybridge Mobile Graphics. When I wake up my computer from sleep mode, I find it becomes quite laggy. Slow response times and lots…
Sonney Patel
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Suspend not working in Ubuntu 18.04 and 19.04

When I tried to suspend by holding mouse on shutdown icon, it goes to suspend for 2 secs and comes to back to previous state again. Though I upgraded to 19.04 Ubuntu, issue still appears.
user2688323
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14
votes
5 answers

Ubuntu freezes/crash after wake when upgraded to 13.10

Back on 13.04 it didn't occurred. I've upgraded to 13.10, systems apparently working fine, but, when I put it to sleep(using or not using extended monitor) and try to wake up, I see the screen(both), without lock-screen, but completely freeze,…
krustbr
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Changing Sleep Timer in Ubuntu 12.10

I am running Ubuntu 12.10. How can I change my system to suspend time for more than 5 minuets when inactive to a longer amount of time?
KevinB
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3 answers

suspend/resume failure

I have been getting this occasionally since I started using Ubuntu. Does anyone know a fix?
romanbird
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8
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3 answers

After returning from suspend the keyboard and mouse doesn't respond

I have 64-bit Ubuntu 14.04 on Dell Inspiron-3537. After resuming from suspend it takes me to log-in screen, and I'm unable to move cursor and no hotkeys are working nor "ctrl+alt+f1". I tried sudo pm-suspend and after resuming it takes me to my…
shonjo
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7
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How to turn off blinking LED while suspend?

When Ubuntu is in suspend mode, power led is blinking. Is there a way to turn it off?
Pilot6
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How to remove the suspend and lock button from menu in ubuntu 17.04?

I am trying to restrict the users from accessing suspend and lock button in the menu. I have used dconf editor to restrict access to shutdown menu but cant find a way to restrict suspend option. Any help?
MZF
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