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[Fixitman Arizona <24330@xxxxxxxxxxxxxxxxxx>]

Phil, you're right. Hibernate is disabled by default in Xubuntu 12.04 due to known bugs. Don't count on hardware that supports suspend or hibernate to work with the 'buntus or even other debian based distros.  It's supposed to be specific to laptops, but it's disabled on desktop systems too, and after enabling it I find yes it is a bug/annoyance.
I'm wondering if these "tasks refusing to freeze" could be automated TO freeze, before the hibernate or suspend command is executed, instead of this error message (abut 7 in 10 times on my system, sometimes it works flawlessly. Doesn't seem to matter that everything is closed except weather app and samba shares.)
Alternatively, would this not work if the user were logged out and all activity suspended (as it were) before hibernate or suspend were carried out?

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https://bugs.launchpad.net/bugs/24330

Title:
  CIFS mount blocks suspend/hibernate

Status in The Linux Kernel:
  Expired
Status in “kdeutils” package in Ubuntu:
  Invalid
Status in “linux” package in Ubuntu:
  Fix Released
Status in “kdeutils” source package in Natty:
  Confirmed
Status in “linux” source package in Natty:
  Fix Released
Status in “kdeutils” source package in Oneiric:
  Confirmed
Status in “linux” source package in Oneiric:
  Fix Released
Status in “kdeutils” source package in Precise:
  Invalid
Status in “linux” source package in Precise:
  Fix Released
Status in Gentoo Linux:
  New

Bug description:
  If I have any network shares mounted via CIFS, the cifsd process prevents klaptop from suspending/hibernating.
  Unmounting manually first fixes everything. Mounting using smbfs instead of cifs lets suspend/hibernate work
  fine, but that's not a good solution, as smbfs is not the preferred solution. I'm not sure if this is specific
  to klaptop, or if it applies to all power management, as klaptop is the only way I can get my laptop to
  suspend.

  This is Kubuntu 5.10, kernel 2.6.12-9, KDE 3.4.3

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