How to stop laptop from going to sleep when lid closed (18.04 LTS Mate)

[Bo Berglund]

On Mon, 20 Apr 2020 18:06:25 +1000, Karl Auer <kauer at biplane.com.au>
wrote:

>On Mon, 2020-04-20 at 08:25 +0200, Bo Berglund wrote:
>> I need the laptop to continue running with the lid closed because it
>> will normally be headless and accessed via SSH (PuTTY from Windows)
>> or VNC. So the key actions need to be set as indicated by Colin.
>> And this makes suspending it more difficult than just closing the
>> lid..
>
>Just locate that suspend key...

OK, I googled it and it turns out to be Fn + F3 (F3 has a moon picture
on it)

>> I have hibernated for many years with Windows
>
>YEARS?!? Jiminy, the most I've ever hibernated has been a day or two.
>Must have had a major updates download hit after that.

I meant hibernate for the time it takes to move between the office and
my home for example. This is what I have been doing for years. Have
never hibernated longer than 24 hours or so at any one time.

>
>> 2) But this is the killer with Ubuntu suspend:
>> If the laptop is suspended then it is IMPOSSIBLE to get it back into
>> operating state.
>
>This is a relatively common problem with laptops of that vintage. It
>seems to have gotten better with time and newer hardware. Just keep
>googling. I seem to recall having to faff about with kernel command
>lines to get a ThinkPad something-or-other suspending properly.
>
>What happens if you do a software suspend (pm-suspend, IIRC)?

On my 8440w notebook it suspends and then cannot turn back on. In fact
every way to suspend results in the lockup in suspended mode.

Could be BIOS related or else the fact that its battery is dead. I am
on AC power so that should not affect things this way unless there is
circuitry internally that separates the power lines...

I have ordered a new battery but unfortunately in COVID-19 times
delivery is delayed to about 2 weeks...


-- 
Bo Berglund
Developer in Sweden