Description of problem:

Suspended by "echo 'mem' > /sys/power/state". Screen went dark, power
light *DID* flash, however when I pushed the power button the light went
on solid however the screen did not wake up

Version-Release number of selected component (if applicable):

2.6.18-302.el5

How reproducible:
3/3

Steps to Reproduce:
1.install RHEL 5.8 64

2. attempt to enter S3 by doing "# echo mem > /sys/power/state"

3.
  
Actual results:
system either acts like it will enter S3 but screen goes black and power light
does not flash periodically,when I pushed the power button the light went
on solid however the screen did not wake up.

system was accessible via network and serial console. 

Expected results:

 System should enter S3, power light should flash periodically, and hitting power button should resume system. screen should wake up.

Additional info: