Public bug reported: I do have USB 3 add-on controller and USB 3 external hard disk. The hard disk works fine on Windows XP and is seen fine on Ubuntu 10.10, but does not work on fresh 11.04 installation.
When I try "lsusb" command, the following message appears in the dmesg logs: [ 1652.340030] xhci_hcd 0000:06:00.0: Timeout while waiting for a slot [ 1652.340042] hub 3-0:1.0: couldn't allocate port 2 usb_device The external hard disk is not shown by "lsusb" command. The result from "lspci -v" is: ... 06:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 03) (prog-if 30 [XHCI]) Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at fdefe000 (64-bit, non-prefetchable) [size=8K] Capabilities: [50] Power Management version 3 Capabilities: [70] MSI: Enable- Count=1/8 Maskable- 64bit+ Capabilities: [90] MSI-X: Enable+ Count=8 Masked- Capabilities: [a0] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [140] Device Serial Number ff-ff-ff-ff-ff-ff-ff-ff Capabilities: [150] #18 Kernel driver in use: xhci_hcd Kernel modules: xhci-hcd Kernel version: 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux The bug is reproducible and happens every time USB 3 hard disk is connected to the USB 3 controller. When device is connected to an USB 2 port, it is recognized correctly: "dmesg" result: .... [ 2920.140026] usb 1-1: new high speed USB device using ehci_hcd and address 4 [ 2920.319875] usbcore: registered new interface driver uas [ 2920.328535] Initializing USB Mass Storage driver... [ 2920.328667] scsi10 : usb-storage 1-1:1.0 [ 2920.328762] usbcore: registered new interface driver usb-storage [ 2920.328764] USB Mass Storage support registered. [ 2921.332718] scsi 10:0:0:0: Direct-Access JMicron PQ: 0 ANSI: 2 CCS [ 2921.334517] sd 10:0:0:0: Attached scsi generic sg5 type 0 [ 2921.335691] sd 10:0:0:0: [sdd] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB) [ 2921.338578] sd 10:0:0:0: [sdd] Write Protect is off [ 2921.338582] sd 10:0:0:0: [sdd] Mode Sense: 28 00 00 00 [ 2921.340580] sd 10:0:0:0: [sdd] Incomplete mode parameter data [ 2921.340583] sd 10:0:0:0: [sdd] Assuming drive cache: write through [ 2921.345584] sd 10:0:0:0: [sdd] Incomplete mode parameter data [ 2921.345588] sd 10:0:0:0: [sdd] Assuming drive cache: write through [ 2921.370114] sdd: sdd1 [ 2921.376581] sd 10:0:0:0: [sdd] Incomplete mode parameter data [ 2921.376585] sd 10:0:0:0: [sdd] Assuming drive cache: write through [ 2921.376588] sd 10:0:0:0: [sdd] Attached SCSI disk ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: linux-image-2.6.38-8-generic 2.6.38-8.42 ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2 Uname: Linux 2.6.38-8-generic x86_64 NonfreeKernelModules: nvidia AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: toshe 1704 F.... pulseaudio /dev/snd/pcmC0D0p: toshe 1704 F...m pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Audigy2'/'SB Audigy 4 [SB0610] (rev.0, serial:0x10211102) at 0x9c00, irq 16' Mixer name : 'SigmaTel STAC9750,51' Components : 'AC97a:83847650' Controls : 202 Simple ctrls : 37 Date: Mon May 2 13:27:38 2011 HibernationDevice: RESUME=UUID=889b436b-2bc2-4e57-b7e3-8d8fbc43b9ca InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427) Lsusb: Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 002: ID 046d:c517 Logitech, Inc. LX710 Cordless Desktop Laser Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 003: ID 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless Adapter Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: System manufacturer System Product Name ProcEnviron: LANGUAGE=en_GB:en LANG=en_GB.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=fabe2a44-e873-4606-9bb4-1bef219aab02 ro vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-2.6.38-8-generic N/A linux-backports-modules-2.6.38-8-generic N/A linux-firmware 1.52 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/12/2008 dmi.bios.vendor: Phoenix Technologies, LTD dmi.bios.version: ASUS P5N32-SLI PREMIUM ACPI BIOS Revision 1002 dmi.board.name: P5N32-SLI PREMIUM dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: 1.XX dmi.chassis.asset.tag: 123456789000 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvrASUSP5N32-SLIPREMIUMACPIBIOSRevision1002:bd03/12/2008:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5N32-SLIPREMIUM:rvr1.XX:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug natty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/775543 Title: xhci_hcd: Timeout while waiting for a slot - Issue with USB3 hard disk on 11.04 x86_64 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs