OK,
I think I've elimintated all other possible possible problems:
1. Wake computer from USB (S3) is enabled in BIOS
2. Sleep state computer is entering is not below S3.
3. I can wake up my computer using keyboard or mouse that are also plugged into USB ports
So, I presume I am hitting a dead end since Flirc's driver doesn't support power management? Or is there anything I can do?
I'm using GUI 1.2.2 and I've updated firmware to 2.3.
Thanks in advance for any help - I would really love if this was possible to do - if I need to install custom driver or anything like that, let me know.
EDIT: I also have a bluetooth keyboard connected, and it suffers from the same problem - it's not able to wake up computer. It also has no power management tab when I bring up device driver from device manager. So, it's definitely driver issue... it is possible that I solve this with custom libusbK driver?