I can confirm the bug with Ubuntu 14.04 on Linux * 3.13.0-35, * 3.14.1, * 3.16.2 and * 3.17-rc4
on two machines * Lenovo IdeaPad Z500 Touch with Lenvo BIOS 71CN45WW(V1.18) * Lenovo U410 with Phoenix BIOS 65CN90WW with all combinations of two different enclosures * one with ESATA plug connected with USB 3.0 adapter * one with USB 3.0 plug (both with external power supply) and * Western Digital WD50EFRX (5 TB) * Samsung HD103SI (1 TB) on * USB 2.0 and * USB 3.0 interface An explanation can be found here: http://askubuntu.com/questions/210879 /external-usb-3-drive-not-recognized (doesn't fix the issue, though). The bug seems to be known * upstream: https://lkml.org/lkml/2014/3/6/284 (claims to be fixed in 3.14-rcX, but isn't (see above)) * Debian: https://lists.debian.org/debian-kernel/2014/03/msg00153.html (regression introduced in 3.13.5, relating to upstream) * Fedora: https://bugzilla.redhat.com/show_bug.cgi?id=1103234 (seems to occur starting from version 18, still occurs in 3.15.x) This seems to be a big, widespread issue for a bunch of people ("The problem is still there in 3.14.4; I haven't seen a USB 3.0 drive work for >6 months" [https://bugs.archlinux.org/task/36296]). ** Bug watch added: Red Hat Bugzilla #1103234 https://bugzilla.redhat.com/show_bug.cgi?id=1103234 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1358871 Title: USB 3.0 connection is unreliable + xHCI xhci_drop_endpoint called with disabled ep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1358871/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
