My Comment #84 was a wee bit to quick - sorry. I had wrong (interpreted) timestamps in the kernel log, so I saw log records seemingly from yesterday, but they are from today ! So I had to continue experimenting, and this command (which you could run for every boot) should detach the device, hence power it off and you avoid the flooding of messages: udisks --detach /dev/sdb where sdb is the device causing the messages: [Sat Nov 15 23:58:58 2014] sd 5:0:0:0: [sdb] Assuming drive cache: write through [Sat Nov 15 23:59:49 2014] sd 5:0:0:0: [sdb] Test WP failed, assume Write Enabled [Sat Nov 15 23:59:49 2014] sd 5:0:0:0: [sdb] Asking for cache data failed If you are unsure of which devices you have 'available' there's several tools available, but these seems to be informative: udisks --enumerate-device-files udisks --show-info /dev/<your device, like sdb for me> and also lsusb -v
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/925760 Title: Constant warnings from the kernel: Test WP failed, assume Write Enabled To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/925760/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs