Comment 12 for bug 243967

I found a way to make it work! A workaround is to unload the ehci_hcd module. The following command (all in one line) accomplishes this for gnome-power-manager.

echo 'SUSPEND_MODULES="ehci_hcd"' | sudo tee /etc/pm/config.d/lenovo3000v100

Now, I don't understand why this is necessary, since according to /etc/default/acpi-support "network cards and USB controllers will automatically be unloaded unless they're listed in MODULES_WHITELIST". This should already be automatically unloaded, and it's not. Maybe this is another bug.