does your video resume after a suspend to ram with kernel-2.6.15-1.1823_FC4

[Kevin Fenzi]

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>>>>> "Dave" == Dave Jones <davej at redhat.com> writes:

Dave> On Fri, Jan 06, 2006 at 11:30:39PM -0600, Paul Johnson wrote:
>> Is suspend & resume working on your laptop?
>> 
>> I was told that one of the goals in FC5 is to make laptop
>> suspend/restore work.  I've been testing with various kernels and
>> have been having the same problem since 2.6.13.  The system will
>> suspend, but when I resume, the video stays dark.  This is
>> happening now with the testing kernel-2.6.15-1.1823_FC4

Dave> You may need to run vbetool before/after.  For a lot of video
Dave> hardware, we don't know enough details to bring the screen back
Dave> to life.  On these systems, we re-run the video bios to reinit
Dave> the screen using vbetool.

Dave> you can find this tool in pm-utils.

Sometimes it also helps to run another 'startx' on resume and then
just quit the X server... (not in this case since you have the
problem even without X). 

You don't say what kind of laptop, but you might also try playing with
the acpi_sleep= options. On my thinkpad T42p, I need to pass
'acpi_sleep=s3_bios'. You can find more info on them in: 
/usr/share/doc/kernel-doc-2.6.14/Documentation/power/video.txt

You might find it helpful to use the 'hibernate' script from: 

http://suspend2.net/downloads/all/hibernate-1.12-1.i386.rpm

It comes with a ram.conf config for syspend to ram. 

It also has handy things like a blacklist of kernel modules that need
to be unloaded/reloaded on suspend resume, services that should be
restarted, etc. It can use optionally use vbetool for video
save/restore. 

Dave> 		Dave

kevin
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