Hibernate and resume
Just to be sure, run the command prompt as administrator and type powercfg /hibernate on . Then in the control panel, power options, energy savings mode, extended settings, save energy, set "allow hybrid standby mode" to off. Power switch action set to hibernate. But this was not enough. I also had to set the "power switch in the start menu" to hibernate. Doesn't really make sense but that's how it works.
Now, upon switching the ignition off, the display goes black and apparently the computer hibernates but you get no visual feedback. Upon switching the ignition back on, you get a progress bar of the resume.
Status: Working. The reassuring visual feedback of XP 32 is gone.
Edit: Status: Sometimes working, sometimes not. Seems to depend on how many programs are open, but who knows.
There is a newer version 1.72 of volumouse in a 64 bit version. Will try that and report. Edit: Tried 1.72 x64 bit version. I set the criteria to "no button pressed". Now the behavior is opposite than before: When the mouse points to the desktop, the volume control works. When it points anywhere else, the volume control doesn't work.
Status: Not working.