Comment 9 for bug 563318

Thanks to an advice from Brian who sent me a private message. I found a solution to make suspend/resume working on Maverick with standard kernel 2.6.35:

Add the line:

GRUB_CMDLINE_LINUX="acpi_sleep=nonvs"
to
/etc/default/grub

Then make:
sudo update-grub
and reboot

Suspend/resume should work now

More about this issue
http://ubuntuforums.org/showthread.php?t=1596545&page=4
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/656631