Improving resume speed

Steve Langasek steve.langasek at
Wed Feb 25 17:45:07 UTC 2009

On Sat, Feb 21, 2009 at 02:48:18PM -0500, Mackenzie Morgan wrote:
> On Saturday 21 February 2009 11:23:32 am (``-_-´´) -- BUGabundo wrote:
> > Jaunty had/has the objective to have a fast startup (<25 secs),
> > But the current technique to resume hibernated machines (using the kernel 
> mode) is too slow, and doesnt use compression.
> > pm-utils (pm-hibernate via s2disk) currently does this, and have a much 
> nicer UI (it shows progress), but unfortunately it got broken last weekend on 
> jaunty [1].

> Kernel modesetting for graphics was mentioned as a possibility for Karmic.  
> That should make the flicker time for graphics after resuming from suspend 
> shorten considerably.

I believe he's talking about hibernate rather than suspend, where the
largest cost is reading the kernel image back from disk.

Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                          
slangasek at                                     vorlon at

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