Fixed the problem by unloading some modules before suspend/hibernate.
I used the following command taken from ubuntuusers.de - Wiki article about
pm-utils to determine which modules have to be unload:
lsmod | grep -iE 'usb|1394|hci|ndiswr|forced|8139|hid|802'
The output must be written to /etc/pm/config.d/00sleep_module
The result is:
# The sleep/wake system to use. Valid values are:
# kernel The built-in kernel suspend/resume support.
# Use this if nothing else is supported on your system.
# uswsusp If your system has support for the userspace
# suspend programs (s2ram/s2disk/s2both), then use this.
# tuxonice If your system has support for tuxonice, use this.
#
# The system defaults to "kernel" if this is commented out.
# SLEEP_MODULE="kernel"
SUSPEND_MODULES="$SUSPEND_MODULES <YOUR_RESULT_FROM_ABOVE_COMMAND_GOES_HERE>"
** Changed in: linux (Ubuntu)
Status: New => Invalid
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[Lenovo Thinkpad T500] Suspend/Hibernate freezes/doesn't work anymore with
Karmic
https://bugs.launchpad.net/bugs/475441
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