Suspend works with Feisty kernel, not Gutsy

[Derek Broughton]

Bill Moseley wrote:

>     $ sudo /usr/sbin/pmi action suspend
> or
>     $ sudo /usr/sbin/pmi action hibernate
> 
> both work, but in both case the display doesn't come back.  

When I've seen this, it's because the video POST doesn't run on resume.

You can test it by going to ctrl-alt-f1, log in, "sudo -i" (to get to a root
shell), and typing "vbetool post" - DON'T hit return.

Go back to your X session, suspend or hibernate, resume.

Now you can't see anything, but Ctrl-alt-F1, and hit Return.  If your screen
comes back, there's the problem.

Now, how you specifically fix it, I can't be sure - I'm not familiar wth the
use of "pmi" for suspend/hibernate.

When I needed it, it was a matter of playing with these lines
in /etc/defaults/acpi-support:

# Should we attempt to warm-boot the video hardware on resume?
POST_VIDEO=true

# Save and restore video state?
# SAVE_VIDEO_PCI_STATE=true

-- 
derek