Public bug reported: Calling 'hdparm -B 255 /dev/sdb' seems take effect:
# hdparm -B /dev/sdb /dev/sdb: APM_level = off But in few minutes hdd is spinning down and # hdparm -B /dev/sdb /dev/sdb: APM_level = 1 ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: hdparm 9.43-1ubuntu3 ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CurrentDesktop: XFCE Date: Wed Jan 27 22:25:07 2016 Dependencies: gcc-5-base 5.2.1-22ubuntu2 libc6 2.21-0ubuntu4 libgcc1 1:5.2.1-22ubuntu2 powermgmt-base 1.31+nmu1 InstallationDate: Installed on 2015-11-02 (86 days ago) InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) SourcePackage: hdparm UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.apm.event.d.20hdparm: [modified] mtime.conffile..etc.apm.event.d.20hdparm: 2016-01-27T15:51:39.218897 ** Affects: hdparm (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug wily -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1538731 Title: hdparm APM_level is changing to 1 automaticly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/hdparm/+bug/1538731/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs