powersave -u # -u is for suspend to ram (suspend to disk doesn't work at all, it just hangs while suspending) command, but while resuming, I get only a black screen, I see a lot of activity of my hard-disk and I can hear the fans running, so I think that resume is working, but there is something with the display.
I had that same problem with my Dell Inspiron 8600. I tried the "hibernate" package, which someone suggested, and everything works fine, now. I recall there were a couple of changes to the config that I was told to make, but I think hibernate fixed the problem even without those changes.
Try "hibernate" first. If that doesn't work, then I can go find the changes I made.
One thing you probably do have to do is change one config file in /etc/hibernate. There's a config file which basically lists the types of hibernation to try and in what order. It's something like:
Load /etc/hibernate/ram.conf Load /etc/hibernate/sysfs-ram.conf Load /etc/hibernate/ususpend-ram.conf Load /etc/hibernate/disk.conf Load /etc/hibernate/sysfs-disk.conf Load /etc/hibernate/ususpend-disk.confOr something like that. You can rearrange them to alter what order they're tried in. You can probably also just use the "hibernate-disk" and "hibernate-ram" commands.
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