Dell Inspiron 510m sleep states S3/S4 not working

[Igor Partola]

I've done a little more testing with this. In particular I disabled most 
of ACPI via debug.acpi.disable (this is on 5.2.1) except for bus, 
children and pci. I disabled things one by one (more or less), and 
observed the same type of behavior: a reset. I hope this helps eleminate 
possible places where the problem could be occuring.

Respect,

Igor