Thanks for the fix. This should be made permanent, as the 8600
definitely requires video post. I assume the Dell Inc..config file is
used to set up the /etc/default/acpi-support file, where it defines
variables such as POST_VIDEO - is this true?

I have found a slightly different but related solution.

My problem was quite odd. Resume didn't work in Tribe 5, but then
started working for a while, then stopped working when I tried and
subsequently uninstalled the fglrx driver, then started working again at
some point for no known reason, then stopped working again after I tried
and again uninstalled fglrx.

I had POST_VIDEO set to true in /etc/default/acpi-support but resume
wasn't working properly because none of the scripts in resume.d were
getting executed. In fact *nothing* after the line 'echo -n mem
>/etc/power/state' in /etc/acpi/sleep.sh was being executed - if I
included a line such as 'echo test > /etc/acpi/logfile' there would be
no such logfile.

The fix I found is to force the post immediately after the suspend in
/etc/acpi/sleep.sh, ie by adding this line immediately after 'echo -n
mem >/etc/power/state':

vbetool dpms on

Now all the scripts in /etc/acpi/resume.d get run (including the line
'vbetool dpms on' in 15-video-post.sh). The 'echo test >
/etc/acpi/logfile' also works fine.

I checked using recovery mode which was much faster - it's a real pain
rebooting Gnome every time resume fails.

By the way, this isn't a duplicate of 121653 - this bug occurs with the
open source drivers; that one occurs with the fgrlx driver. The fglrx
driver fails on suspend; this failure is on resume.

-- 
[gutsy] suspend/resume is broken on Inspiron 8600
https://bugs.launchpad.net/bugs/136315
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