xhci_hcd not loaded

[hyper_ch]

Today I just tried to copy 4 GB data onto a usb 3.0 stick. However it took like forevery and my system load spiked to 6.0. I inquired a bit and noticed, that xhci_hcd wasn't loaded at all:

root@subi:~# lsmod | grep xhci
root@subi:~# modprobe xhci_hcd
root@subi:~# lsmod | grep xhci

The weird thing is, that in dmesg xhci seems to be loaded:

root@subi:~# dmesg | grep xhci
[ 4.534477] xhci_hcd 0000:00:14.0: xHCI Host Controller
[ 4.534484] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2
[ 4.534571] xhci_hcd 0000:00:14.0: cache line size of 64 is not supported
[ 4.534594] xhci_hcd 0000:00:14.0: irq 60 for MSI/MSI-X
[ 4.534671] usb usb2: Manufacturer: Linux 3.15.0-031500rc2-generic xhci_hcd
[ 4.535678] xhci_hcd 0000:00:14.0: xHCI Host Controller
[ 4.535684] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 3
[ 4.535737] usb usb3: Manufacturer: Linux 3.15.0-031500rc2-generic xhci_hcd
[ 5.149389] usb 2-2: new high-speed USB device number 2 using xhci_hcd
[ 5.629433] usb 3-3: new SuperSpeed USB device number 2 using xhci_hcd
[ 5.717072] usb 2-2.1: new high-speed USB device number 4 using xhci_hcd
[ 5.877002] usb 2-2.2: new high-speed USB device number 5 using xhci_hcd
[ 6.252828] usb 2-2.2.4: new high-speed USB device number 6 using xhci_hcd
[ 6.644502] usb 2-2.2.4.2: new high-speed USB device number 7 using xhci_hcd
[ 14.160712] usb 2-2.2.4.2.3: new full-speed USB device number 8 using xhci_hcd
[ 14.408571] usb 2-2.2.4.2.4: new full-speed USB device number 9 using xhci_hcd

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.2
Uname: Linux 3.15.0-031500rc2-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.1
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: KDE
Date: Mon May 19 18:28:07 2014
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: ubuntu-release-upgrader
UpgradeStatus: No upgrade log present (probably fresh install)

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1320941

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.15 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-rc5-utopic/

[Tim Gardner (timg-tpi)]

xhci_hcd is built into the kernel.

debian.master/config/config.common.ubuntu:CONFIG_USB_XHCI_HCD=y