drogo:
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>
> I must be tired or something (for a year?? :) ) but I completely forgot
> about a live-USB.
>
> Just grabbed a copy of Fedora 30, and it suspends successfully. Both by
> hitting the power button, and by choosing the "pause" icon from the user
> menu.
>
> Thanks for the reminder!
>
Not sure of your situation, since for some reason I'm not seeing the
whole thread. (For some reason, sometimes mid-thread replies show up as
the root of a thread for me, earlier replies sometimes don't show up at
all, and/or replies will show up as individual, out-of-thread messages.)
... but that probably means that the relevant drivers aren't in F25
(whether originally or by updates). I ran into the same issue recently;
bought-new a relatively recent laptop, which fails to resume on F25 and
Qubes but resumes flawlessly on F30 and Ubuntu 19.04. i.e. The hardware
is too new for the software.
You could try upgrading to the testing or unstable dom0 kernels (up to
5.9 available, I think) and Xen versions. In my case, interestingly,
this didn't work. F30 with an older kernel worked, but not Qubes (F25)
with a newer kernel. So apparently userland plays a role as well.
Beyond that, there's no remedy that I know of. I remember reading
somewhere that upgrading dom0 to F30 is more or less impossible, and I
don't think minor releases (R4.0) ever ship newer Fedoras. You might be
able to narrow down what userland components are responsible, and
upgrade them specifically, but I have no idea how to go about this (if
you do, let me know!). And finally, while there are pre-release R4.1 (w/
F30) builds available, I'm guessing it'll probably be at least another
year or so until we get an R4.1 beta.
And of course, Xen doesn't support hibernate, and Qubes doesn't support
Xen's "save VM state" feature.