On Fri, Jul 08, 2011 at 03:16:20PM -0000, Arnon Klein wrote:
> It looks like it is a wireless device module issue. I'm using 11.04 with
> out-of-the-box kernel 2.6.38-8-generic .
> 
> Patching up /usr/lib/pm-utils/sleep.d/55NetworkManager
> with :
> 
> case "$1" in
>       hibernate|suspend)
>               suspend_nm
>                 modprobe -r ath9k
>               ;;
>       thaw|resume)
>               modprobe ath9k
>               resume_nm
>               ;;
>       *) exit $NA
>               ;;
> esac
> 
> solved this, and my N150 is now returning from suspend.

That's interesting. When I investigated I saw that the hang was most
definitely happening prior to resuming devices, so I'm not sure what the
relationship is. A lot of things seemed to make the problem harder to
trigger without completely eliminating it though; the hang appears to be
very timing sensitive. If you're interested you could try running an
automated S3 test to see whether you can trigger a hang. The following
would do 100 S3 iterations (you'll probably need to run 'sudo apt-get
install fwts' first):

  fwts s3 --s3-multiple=100

I'm no longer in posession of one of these machines to try it myself.

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https://bugs.launchpad.net/bugs/640100

Title:
  Maverick fails to wake up on Samsung N150

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