I did some research and it turned out my issue is a device specific bug for certain Western Digital drives. I have posted a bug report and a work around under pm-tools: https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/1225169
I did some research and it turned out my issue is a device specific bug for certain Western Digital drives. I have posted a bug report and a work around under pm-tools: https:/ /bugs.launchpad .net/ubuntu/ +source/ pm-utils/ +bug/1225169