Suspend on fedora 16
I believe that I could suspend my Dell E6410 when it was running Fedora 15. I'm not sure what power state I was using, but I could close the lid and it would power down. When I opened the lid and pressed a key on the keyboard, it would come back to state that I left my session in. I didn't have to think about whether the laptop was sleeping or suspending or hibernating. It just worked without any effort on my part.
Now I'm running Fedora 16 (via an upgrade from fedora 15, not a fresh install) and when I try to suspend, it wakes up enough to light up the bluetooth, wifi, and hard disk icons, showing activity, but the screen stays dark. When I press a key on the keyboard, the screen switches to a slightly lighter shade of gray for a few seconds before it switches back down to darker gray. The keyboard is active, because I can switch in and out of caps lock mode. But attempts to switch to a console with ctrl-F2 cause no change. Likewise with ctrl-alt-del or ctrl-alt-backspace. Or any other key combination I can think of. The only way out of this state is to hold the power button for 7 seconds or so until it powers off. Then power back on.
I've tried hibernating instead of suspending, but that fails during the wake up process and then does a fresh reboot. I suppose that optimizes a few steps of the suspend procedure, but both are non-optimal.
Contents
/etc/pm/sleep.d
I've tried following the instructions on this blog with no effect: http://forums.fedoraforum.org/showthread.php?t=265588
kernel boot option acpi=off
This page looks hopeful, but I haven't tried fiddling my grub.conf yet: http://www.cs.bham.ac.uk/~axs/laptop/
disabling suspend in policy kit
And I'd rather not have to resort to this page that tells me how to just turn off suspend because it is hopeless: http://blog.anttix.org/2011/11/disabling-suspend-and-hibernate-on-fedora-16/#more-248
