[GTALUG] war story: some tablet-ish computers don't sleep
D. Hugh Redelmeier
hugh at mimosa.com
Thu Apr 20 20:25:04 EDT 2017
Some recent tablets don't know how to sleep. I know, this is crazy.
Instead they are designed to take frequent naps, interleaved with checking
on "stuff". Kind of like a smart phone. This feature was called
"Connected Standby" by Microsoft but is now called "InstantGo".
<https://en.wikipedia.org/wiki/InstantGo>
Linux has no support for InstantGo and PCs with it have no support for
Sleep or Hiberate power states. Example machines: Mirosoft Surface Pro
machines and Dell's Venue 11 Pro.
I'm typing this on a Venue 11 Pro (model 1140) running Fedora 25.
That's how come I've learned this.
The best work around has been to add a file /etc/systemd/sleep.conf
with this (not indented):
# see https://bugzilla.kernel.org/show_bug.cgi?id=102281#c56
[Sleep]
SuspendState=freeze
Freezing isn't as good at saving power as Sleeping, but it will do.
I think that this was the only painful discovery I've made so far
while setting up Linux on the Venue 11 Pro.
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