[solved] Suspend to RAM... a simple poll

takedown · 2010-07-02 23:58:57

Hello Archers... After start writing about my questions, I'd say something:
Yes, I read the wiki, search the forum and google.

My question is most a poll: which method do you prefer to suspend your laptops?
tuxonice
uswsusp
kernel

In my case, I suspend my thinkpad T500 with pm-utils and kernel module (actually I assume that pm-utils use that module, because I haven't explicitly defined one).

As I understand, uswsusp isn't updated for some time.

For you, what is the best method to suspend to RAM?

Last edited by takedown (2010-07-07 17:39:43)

KlavKalashj · 2010-07-03 06:15:24

Whatever is standard in kde4. I would guess pm-utils. Haven't looked into it, since it works

seiichiro0185 · 2010-07-03 06:57:04

I use pm-utils with the default kernel suspend routines. Works perfectly with my Dell Vostro 1310 Notebook. No special config for me too, pm-utils does all that is needed automagically

flamelab · 2010-07-03 07:06:36

Pm-utils, works nicely.

bharani · 2010-07-03 07:31:41

pm-utils.

ngoonee · 2010-07-03 11:44:09

tuxonice doesn't even handle suspend-to-RAM.....

archman-cro · 2010-07-03 11:54:06

pm-utils for suspending to RAM. Using it rarely, though...

hokasch · 2010-07-03 11:57:44

Never got my head around this. What is a "method", and what is a "framework", aka different tools wrapping around these methods? From what I think to have understand, there is only a vanilla kernel implementation, and the tuxonice method. And uswsusp, pm-utils and hibernate-script are wrappers that either work with both implementations or only one of them.

I currently have installed pm-utils and uswsusp, but have no idea what gnome is doing; suspend to ram works while suspend to disk doesn't. I will reinstall from scratch soon anyway, so no interest diving into this for now.

Allan · 2010-07-03 11:59:59

I just shut the lid and it worked... I guess pm-utils is involved.

.:B:. · 2010-07-03 12:11:12

Pm-utils does the job here too, but since my laptop suffers from a cold boot bug I guess that interferes sometimes. Not a software problem though.

takedown · 2010-07-03 13:27:29

Thank you for all your answers, I can now begin to relax knowing that I'm taking the right path.

I began to investigate this matter since my ThinkPad T500 is bringing me enough headaches to suspend to RAM. Sometimes she wake up properly, other times she does wrong.

I will test it for a few days
It would be like a dream for me to find a configuration that works correctly

anrxc · 2010-07-03 14:08:54

takedown wrote:

As I understand, uswsusp isn't updated for some time.
For you, what is the best method to suspend to RAM?

No, the development is still active. You got the basics right, pm-utils is a power management framework that supports kernel, uswsusp and tuxonice, kernel being default (you did not set anything explicitly).

If that method works fine for you, you really don't have to try uswsusp. But what it offers are some extras; encryption and/or compression of the hibernation image, various hardware quirks, ability to use a swap file... When you need some of that functionality you turn to uswsusp or tuxonice, the first is completely user-space while the second requires modifying your kernel. Pm-utils will continue to function as usual, helping the procedure with its useful hooks, but using the new method in the background.

benob · 2010-07-03 14:26:15

The kernel way works fine on a T400 w/ intel graphics. I use it every day.

takedown · 2010-07-03 15:03:41

@anrxc: thankyou for your answer. I think uswsusp isn't update because I seach in the wrong place. Thanks for the info.
I start searching because I really don't know why some time resume ok, sometimes fail. When the resume fail, i got a black screen (backlight on) and blinking cursor, but the system is useless, sometimes i got my screen off.

@benob: wich config do you use? can you post your lspci?

litemotiv · 2010-07-03 16:32:10

takedown wrote:

@anrxc: thankyou for your answer. I think uswsusp isn't update because I seach in the wrong place. Thanks for the info.
I start searching because I really don't know why some time resume ok, sometimes fail. When the resume fail, i got a black screen (backlight on) and blinking cursor, but the system is useless, sometimes i got my screen off.

you can try one of the quirk settings, 'man pm-suspend'

edit: the different wiki sections on suspending are a little ambiguous and overlapping (pm-utils, hibernate-script, uswsusp etc.), i think it's generally confusing. i don't know much about suspend methods myself, but it would be good if some (or several) people would try to unify this information and make it a bit simpler.

Last edited by litemotiv (2010-07-03 21:35:39)

nixpunk · 2010-07-03 16:46:39

Pm-utils on a Thinkpad T410. Suspend and hibernate work flawlessly.

archman-cro · 2010-07-03 21:33:49

@nixpunk: Hibernation deletes all cache from ram, or keeps it? Mine erased it, so I switched to TuxOnIce, since hibernation without keeping caches is not really a hibernation...

nixpunk · 2010-07-04 08:24:22

archman-cro wrote:

@nixpunk: Hibernation deletes all cache from ram, or keeps it? Mine erased it, so I switched to TuxOnIce, since hibernation without keeping caches is not really a hibernation...

I'm pretty sure that hibernation is generally understood as a state where a computer is shut off and the contents of ram are stored on a non-volatile storage medium. This allows complete power savings, and yes, contents of ram are lost until reinstated at resume.

On the other hand, I believe there are hybrid methods of sleep/suspend that cache contents of ram to disk as well as keeping contents of ram stored in ram with minimal power usage. This allows that in the case of a power failure, a resume from a hibernate-like state can still occur. I don't believe this is possible with Pm-utils at this time.

Either way, I most often prefer hibernate when I am not using my laptop for more than a few hours, since it does not require electricity or drain the battery.

takedown · 2010-07-07 17:39:20

Ok... Thank you very much for all your answers, finally, thanks to them I got some data.
First off all, the way of all of you using pm-utils... I'm in the right way.
Second... I discover that using s2ram -f -a 3 work ok, suspending one, two, three , etc times without any issue.
Three... the community, each of you make ArchLinux great

takedown · 2010-07-09 20:30:26

bad news...
again found the same symptom ... sometimes the system resume with a black screen ... irit me this problem...
and not know where to go, I would love to suspend my laptop without being afraid to resume

when resume, no VT switching via Ctrl+Alt+Fx, no CapsLk, appear the CPU is off... the fan is running, the HDD too... stranger

Last edited by takedown (2010-07-09 23:19:45)

Arch Linux

#1 2010-07-02 23:58:57

[solved] Suspend to RAM... a simple poll

#2 2010-07-03 06:15:24

Re: [solved] Suspend to RAM... a simple poll

#3 2010-07-03 06:57:04

Re: [solved] Suspend to RAM... a simple poll

#4 2010-07-03 07:06:36

Re: [solved] Suspend to RAM... a simple poll

#5 2010-07-03 07:31:41

Re: [solved] Suspend to RAM... a simple poll

#6 2010-07-03 11:44:09

Re: [solved] Suspend to RAM... a simple poll

#7 2010-07-03 11:54:06

Re: [solved] Suspend to RAM... a simple poll

#8 2010-07-03 11:57:44

Re: [solved] Suspend to RAM... a simple poll

#9 2010-07-03 11:59:59

Re: [solved] Suspend to RAM... a simple poll

#10 2010-07-03 12:11:12

Re: [solved] Suspend to RAM... a simple poll

#11 2010-07-03 13:27:29

Re: [solved] Suspend to RAM... a simple poll

#12 2010-07-03 14:08:54

Re: [solved] Suspend to RAM... a simple poll

#13 2010-07-03 14:26:15

Re: [solved] Suspend to RAM... a simple poll

#14 2010-07-03 15:03:41

Re: [solved] Suspend to RAM... a simple poll

#15 2010-07-03 16:32:10

Re: [solved] Suspend to RAM... a simple poll

#16 2010-07-03 16:46:39

Re: [solved] Suspend to RAM... a simple poll

#17 2010-07-03 21:33:49

Re: [solved] Suspend to RAM... a simple poll

#18 2010-07-04 08:24:22

Re: [solved] Suspend to RAM... a simple poll

#19 2010-07-07 17:39:20

Re: [solved] Suspend to RAM... a simple poll

#20 2010-07-09 20:30:26

Re: [solved] Suspend to RAM... a simple poll

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