SSD installation, strange behaviour afterwards

crwdns2853023:0crwdne2853023:0

I replace my optical drive with a SSD.

crwdns2853024:0crwdne2853024:0

The installation was easy, no problem.

But when I install the OS on the SSD and boot from it, I can no longer enter sleep mode. I've tried to google the problem but have found nothing about that kind of behaviour. Anyone got a suggestion?

crwdns2853025:0crwdne2853025:0

Nope, installation was easy and the guide was good.