[Bug 28840] Re: CONFIG_USB_EHCI_SPLIT_ISO not being set causes errors when attempting to play audio through a usb sound device connected via hub

[James Henstridge]

I ran into this too when trying to use a USB headset through a hub.
>From the description of the kernel config variable, it seems that this
problem is only triggered when plugging a USB 1.x sound device into a
USB 2.0 hub:

config USB_EHCI_SPLIT_ISO
        bool "Full speed ISO transactions (EXPERIMENTAL)"
        depends on USB_EHCI_HCD && EXPERIMENTAL
        default n
        ---help---
          This code is new and hasn't been used with many different
          EHCI or USB 2.0 transaction translator implementations.
          It should work for ISO-OUT transfers, like audio.

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CONFIG_USB_EHCI_SPLIT_ISO not being set causes errors when attempting to play audio through a usb sound device connected via hub
https://launchpad.net/bugs/28840