http://bugzilla.opensuse.org/show_bug.cgi?id=913885 --- Comment #9 from Björn Voigt <bjoernv@arcor.de> --- I tested my system with and without my Western Digital Red (WD30EFRX). First time suspend+resume worked, second time suspend worked, but resume failed. My first "disk" is an Samsung SSD 840 Evo. The Western Digital Red disk and the Samsung SSD 840 Evo both do not support APM: $ hdparm -i /dev/sda|grep PM AdvancedPM=no WriteCache=enabled $ hdparm -i /dev/sdb|grep PM AdvancedPM=no WriteCache=enabled I have issues with my new Western Digital Red disk too (exceptions like "failed command: READ FPDMA QUEUED"). They are unrelated to suspend/resume, but they may related to power management problems. I currently debug this problem with cable changes, hdparm optimizations and WD support. -- You are receiving this mail because: You are on the CC list for the bug.