I have both a Western Digital MyPassport Essential 500GB harddisk and a Seagate FreeAgent GoFlex Desk 2TB working ok on my ASUS U3S6 XHCI controller in USB 3.0 mode. Currently I'm using ubuntu 10.04 (Lucid).
When I disconnect the devices, and connect a USB 3.0 hub (DeLock USB 3.0 External HUB 4 Port), the HUB is detected by linux, but no USB 3.0 devices (i.e. the mentioned HDDs) connected to said HUB. USB 2.0 devices connected to the HUB are detected and working properly, though. When connecting the hub, 2109:0810 and 2109:3431 appear in "lsusb".
I've got the HUB working in 3.0 mode by means of compiling a kernel from git: dbe79bbe9dcb22cb3651c46f18943477141ca452 (USB 3.0 Hub Changes). I'm not 100% sure if this is the exact commit enabling USB 3.0 HUB operation, but there is strong evidence for it. If this is "the fix", the next ubuntu release (11.10) will likely support USB 3.0 HUBs "out of the box".
In addition to 10.04, I also tried the HUB on 11.04 (natty), observing the same problem. For now I'll omit the "default" system information, because I believe the problem is not related to my particular hardware setup. If you request, I'm happy to submit this information too.
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AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: eduard 2509 F.... pulseaudio
CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
Card0.Amixer.info:
Card hw:0 'SB'/'HDA ATI SB at 0xf9ff4000 irq 16'
Mixer name : 'Analog Devices AD1988B'
Components : 'HDA:11d4198b,1043829b,00100400'
Controls : 48
Simple ctrls : 27
Card1.Amixer.info:
Card hw:1 'DMX6Fire'/'TerraTec DMX6Fire at 0xe800, irq 21'
Mixer name : 'ICE1712 - multitrack'
Components : ''
Controls : 77
Simple ctrls : 51
DistroRelease: Ubuntu 10.04
HibernationDevice: RESUME=UUID=2469877a-02d2-4be6-813f-27f2d5ad992a
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
virbr0 no wireless extensions.
MachineType: System manufacturer System Product Name
NonfreeKernelModules: nvidia
Package: linux (not installed)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-33-generic root=UUID=53ba0584-86de-470e-928e-3a12ac9c278c ro ahci.marvell_enable=1
ProcEnviron:
SHELL=/bin/bash
PATH=(custom, user)
LANG=de_AT.UTF-8
ProcVersionSignature: Ubuntu 2.6.32-33.70-generic 2.6.32.41+drm33.18
Regression: No
RelatedPackageVersions: linux-firmware 1.34.7
Reproducible: Yes
RfKill:
Tags: lucid needs-upstream-testing
Uname: Linux 2.6.32-33-generic x86_64
UserGroups: adm admin audio cdrom cyberjack dialout dip fuse libvirtd netdev plugdev sambashare src video
dmi.bios.date: 11/21/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1406
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M3A32-MVP DELUXE
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1406:bd11/21/2008:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM3A32-MVPDELUXE:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
For experiment, I upgraded now my natty (test) install to oneiric (11.10). Oneiric uses linux-image-
The result: as suspected, the USB 3.0 HUB works! I can now mount and read/write the USB 3.0 HDDs connected to the HUB.