Hi, with the Kernel 4.4.0-59 i got after the startup, Hardware Error Messages for my external USB-HDDs. The internal HDD ist not affected. I checked all external HDDs via smartctl and did a short selftest which finished without error. The error came up after i switched from XUbuntu 14.04 to 16.04 with a clean installation. The Bugtracker at redhat shows a similar issue: https://bugzilla.redhat.com/show_bug.cgi?id=1351305 Regards Mike OS: Xubuntu 16.04 Kernel: --------- Linux toshiba 4.4.0-59-generic #80-Ubuntu SMP Fri Jan 6 17:36:54 UTC 2017 i686 athlon i686 GNU/Linux and Linux toshiba 4.4.0-62-generic #83-Ubuntu SMP Wed Jan 18 14:09:55 UTC 2017 i686 athlon i686 GNU/Linux dmesg: --------- [ 40.110357] sd 9:0:0:0: [sdc] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE [ 40.110369] sd 9:0:0:0: [sdc] tag#0 Sense Key : Hardware Error [current] [descriptor] [ 40.110373] sd 9:0:0:0: [sdc] tag#0 Add. Sense: No additional sense information [ 40.110379] sd 9:0:0:0: [sdc] tag#0 CDB: ATA command pass through(16) 85 06 2c 00 da 00 00 00 00 00 4f 00 c2 00 b0 00 [ 40.366689] sd 10:0:0:0: [sdd] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE [ 40.366699] sd 10:0:0:0: [sdd] tag#0 Sense Key : Hardware Error [current] [descriptor] [ 40.366704] sd 10:0:0:0: [sdd] tag#0 Add. Sense: No additional sense information [ 40.366710] sd 10:0:0:0: [sdd] tag#0 CDB: ATA command pass through(16) 85 06 2c 00 da 00 00 00 00 00 4f 00 c2 00 b0 00 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html