[systemd-devel] Antw: Antw: [EXT] Re: [systemd‑devel] no log information about why machine is sleeping

[Ulrich Windl]

>>> "Ulrich Windl" <Ulrich.Windl at rz.uni-regensburg.de> schrieb am 12.08.2021
um
10:01 in Nachricht <6114D548020000A100043229 at gwsmtp.uni-regensburg.de>:
>>>> George Avrunin <avrunin at math.umass.edu> schrieb am 12.08.2021 um 01:44
in
> Nachricht <20210811194453.2dd47326 at g.localdomain>:
>> On Wed, 11 Aug 2021 15:24:25 ‑0700, Luis Chamberlain wrote:
>> 
>>> On Wed, Aug 11, 2021 at 05:11:21PM ‑0400, George Avrunin wrote:
>>> > Aug 07 14:09:22 ext.math.umass.edu kernel: ACPI: Preparing to enter
>>> > system sleep state S3  
>>> 
>>> That's suspend to ram. Depending on the distribution it may or not be a
>>> a default after a period of time of idle. The idea is that moving a
>>> mouse would resume it. For desktops this is stupid. Try:
>>> 
>>> systemctl mask sleep.target suspend.target hibernate.target
>>> hybrid‑sleep.targe
>>> 
>>> To re‑enable:
>>> 
>>> sudo systemctl unmask sleep.target suspend.target hibernate.target
>>> hybrid‑sleep.target
>>> 
>>>   Luis
>> 
>> Thanks, masking the sleep, etc., targets will presumably stop it.  
>> 
>> But I don't think it was a default setting to suspend after a period of
>> being idle, at least not once the machine was back on AC power (unless
>> something got reset somehow). This machine is used as a mail and web
>> server, as well as for some computations that my students and postdoc run
>> remotely, and it's never done this before when there was no activity at
>> the console. (And during the pandemic, there's been very little activity
>> at the console‑‑we've all mostly been working from home.) 
> 
> Considering my previos message, that may answer while it does not go to 

Sorry; the "while" above should read "why"...

> sleep
> while being connected.
> 
>> 
>> So I'd still like to understand what caused it to start the suspend
>> operation. If there's an easy way to get just a little bit more logging
>> about that, it would help me and probably others.
>> 
>>   George