This seems to be a problem in the kernel. Did git bisecting and here is the result:
Commit:47f467a is the first bad commit commit Commit:47f467a Author: Sarah Sharp <sarah.a.sh...@linux.intel.com> Date: Fri Jan 31 11:45:02 2014 -0800 Revert "xhci: Set scatter-gather limit to avoid failed block writes." commit Commit:1386ff7 upstream. This reverts commit Commit:f2d9b99. We are ripping out commit Commit:35773da "usb: xhci: Link TRB must not occur within a USB payload burst" because it's a hack that caused regressions in the usb-storage and userspace USB drivers that use usbfs and libusb. This commit attempted to fix the issues with that patch. Signed-off-by: Sarah Sharp <sarah.a.sh...@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1313279 Title: xHCI host not responding to stop endpoint command To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lubuntu-meta/+bug/1313279/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs