Earlier today I just pushed a fix for suspend/resume when the machine has a floppy disk drive. Surprisingly, a lot of modern machines still have floppy disk drives in them, and this fix enables those platforms to participate in the S3 suspend work.
The fix will be in b105.
One such machine is the Dell Precision M390. I imagine there are many other desktop class systems of this nature.
While suspend/resume has been focused largely on laptops (where battery life is a paramount concern), I suspect that enabling suspend-to-RAM for desktop class systems will ultimately have a larger environmental impact, since it is those systems that typically consume the most power. So, perhaps this small change will have a somewhat significant impact.
If you have a platform that this enabled suspend/resume to work on, tell me about it. Include smbios output in your message, too. :-)