Comment 7 for bug 1254581

Since someone mentioned USB3 hard drives, this is some info I can add.
I am having USB related problems with a USB-3 RAID hard drive in 12.04.3 LTS - kenel 3.5.0-32-generic.

I have a USB external hard drive and all was fine until a few month's ago when I started getting USB disconnect a few minutes after plugging the device or rebooting the system (Ex: usb 1-7: USB disconnect, device number 18).

From my investigation so far the problem seems to have started 31 October 2013 and now I believe since a specific update:
Start-Date: 2013-10-30 23:33:59
Commandline: aptdaemon role='role-commit-packages' sender=':1.21820'
Upgrade: upower:i386 (0.9.15-3git1, 0.9.15-3git1ubuntu0.1), libdecoration0:i386 (0.9.7.12-0ubuntu2, 0.9.7.12-0ubuntu3), libupower-glib1:i386 (0.9.15-3git1, 0.9.15-3git1ubuntu0.1), fire
fox-globalmenu:i386 (24.0+build1-0ubuntu0.12.04.1, 25.0+build3-0ubuntu0.12.04.1), compiz-plugins-default:i386 (0.9.7.12-0ubuntu2, 0.9.7.12-0ubuntu3), firefox:i386 (24.0+build1-0ubuntu0
.12.04.1, 25.0+build3-0ubuntu0.12.04.1), gir1.2-upowerglib-1.0:i386 (0.9.15-3git1, 0.9.15-3git1ubuntu0.1), firefox-locale-en:i386 (24.0+build1-0ubuntu0.12.04.1, 25.0+build3-0ubuntu0.12
.04.1), firefox-locale-pt:i386 (24.0+build1-0ubuntu0.12.04.1, 25.0+build3-0ubuntu0.12.04.1), compiz:i386 (0.9.7.12-0ubuntu2, 0.9.7.12-0ubuntu3), compiz-core:i386 (0.9.7.12-0ubuntu2, 0.
9.7.12-0ubuntu3), compiz-gnome:i386 (0.9.7.12-0ubuntu2, 0.9.7.12-0ubuntu3)
End-Date: 2013-10-30 23:34:11
Probably "upower" related?