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2 Replies Latest reply: Apr 27, 2013 7:32 AM by Dude! RSS

USB 3 problem with OEL 6.3

971024 Newbie
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after connecting an external 2.5" HDD (USB 3 ready!!) to one of my USB 3 interfaces I recognized a lot of xhci_hcd warnings. They all look the same.

xhci_hcd 0000:0e:00.0: WARN: Stalled endpoint.

I tried to connect while the OS was running.

According to the output of my lsmod command it seems to be that the xhci_hcd kernel module is loaded but not used. Here is the output:

xhci_hcd 123859 0

In spite of these warnings the HDD seems to work. May be with a reduced speed??

As I am a Linux newbie I don't know how to investigate further or to get rid of this problem.

Could you please give some advice?

Thanks and regards


P.S. I am using the following kernel: 2.6.39-200.24.1.el6uek.x86_64
  • 1. Re: USB 3 problem with OEL 6.3
    TommyReynolds Expert
    Currently Being Moderated
    You have encountered the peril of installing an enterprise server distribution on laptop/desktop hardware. Since servers typically do not use USB 3 storage, this is not extensively tested.

    I suggest installing a more user-oriented distribution, such as Fedora, and then using to create an OL6 guest machine.
  • 2. Re: USB 3 problem with OEL 6.3
    Dude! Guru
    Currently Being Moderated
    Oracle Linux or any other Linux distribution based on the source of RHEL is designed for enterprise server hardware. However, the USB 3 issue you are experiencing is not an issue with Enterprise Linux only and apparently affects other Linux distributions too. The solution for the problem is usually a device firmware and Linux kernel upgrade. You could try to upgrade to OL 6.4 and use the latest Oracle UEK2 kernel or switch to a Debian based desktop distribution, such as Ubuntu, which deploys the latest versions of available Linux software.


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