Re: Default suspend on live images?

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On Fri, 2018-03-09 at 12:17 -0500, Owen Taylor wrote:
> On Fri, Mar 9, 2018 at 12:10 AM, Adam Williamson <adamwill@xxxxxxxxxxxxxxxxx
> > wrote:
> > Hi folks!
> > 
> > So, Fedora 28 has inherited an upstream GNOME change to default to
> > suspending after 20 minutes:
> > 
> > https://bugzilla.gnome.org/show_bug.cgi?id=681869
> > 
> > I believe this will also apply to live images, unless we suppress it.
> > Should we suppress it? Suspending live images does not work well and
> > is, I think, expressly not really 'supported'.
> > 
> 
> Any more details about how suspending live images doesn't work? It's
> obviously not good if you boot the Fedora installer, wait 20 minutes, and
> then find that the system is crashed in some bad state.

Well, the live image basically runs in RAM already; suspending then
attempts to dump the whole running state to...RAM...

I honestly don't have a detailed tech explanation of how/why it doesn't
work, but it's one of those things I've just always kinda had on my
'yeah of course that doesn't work' list, and every so often someone
*does* try doing it and report that it doesn't work.

I appreciate this is a bit squishy. :) I'll try and test it out a bit
and see just how much it does / doesn't work, if I get time, but I've
got a lot of more urgent stuff on right now :(

> Is this something that we could detect in the suspend triggering code
> rather than changing configuration for the live image?

Well......sorta. At least AIUI, I believe that there isn't a 100%
reliable way of determining "this is a live session". It's easy to
know, of course, "this is a *Fedora* live session", but that's not a
generic solution for an upstream like GNOME. There is not, so far as I
know anyway, a fully distro-agnostic indicator that "this system is
running live".
-- 
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | XMPP: adamw AT happyassassin . net
http://www.happyassassin.net
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