[Bug 35213] Re: hibernate fails when not on AC power on HP Pavilion ZT3000 - regression from breezy

[Michael Pardee]

This appears to prevent the slow hibernation while on battery problem:
apt-get remove laptop-mode-tools
(which will also remove due to dependencies: acpi-support gnome-power-manager laptop-mode-tools powermanagement-interface  ubuntu-desktop)

Of course, without some of those other packages there are other problems (like the network not coming back up correctly)

DEBUGGING TIP: if you change your kernel parameters to remove quiet and splash and add vga=normal, and in /etc/default/acpi-support you set USE_DPMS=false then you should be able to see your notebook's status while hibernating including a % of pages written to memory so you know if hibernation is hung or just really slow (can take up to 30 minutes sometimes)

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hibernate fails when not on AC power on HP Pavilion ZT3000 - regression from breezy
https://launchpad.net/bugs/35213