Re: [Alsa-user] XStation 25 does not work in duplex mode with Alsa

[Bharat R. <me...@gm...>]

Hi,

Patch works brilliantly. I  built a custom kernel on ubuntu 11.10 based on
the latest lowlatency kernel config from the ppa and the Xstation now works
in duplex :). Hope this makes it to a mainstream build soon.

Still have the problems with alsamixer...but skype works with it over the
pulseaudio-jack module, so am not too fussed..

Will be testing it more thoroughly with ardour/jackd over the weekend.

Thanks a lot Clemens.

regards,
Bharat


On Wed, Nov 2, 2011 at 8:48 PM, Bharat Rajagopalan <me...@gm...>wrote:

> Hi Clemens,
>
> Thanks for the tip. Will look into the patch!
>
> This is a laptop so all the ports sit on top of an internal hub which has
> two main usb ports ..so its not possible to connect it directly..it has to
> go through the hub.
>
> I was also wondering, if the problem is with the EHCI driver, why  does
> the zoom g9 (also a usb 1 device) work properly in duplex mode? I was just
> looking at the dmesg output and cant see anything significantly different.
>
> regards,
> Bharat
>
> Xstation dmesg output (copied from pastebin)
>
>    1.  [ 4180.097600] usb 2-1.3: new full speed USB device number 5 using
>    ehci_hcd
>    2.  [ 4180.202969] input: Novation DMS XStation as
>    /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3:1.5/input/input12
>    3.  [ 4180.203267] generic-usb 0003:1235:0006.0002: input,hidraw1: USB
>    HID v1.00 Device [Novation DMS XStation] on usb-0000:00:1d.0-1.3/input5
>    4.  [ 4180.299862] usbcore: registered new interface driver
>    snd-usb-audiozoo
>
>
> Zoom dmesg output
>
>
>    1. [ 1407.691982] usb 2-1.3: new full speed USB device number 4 using
>    ehci_hcd
>    2. [ 1407.773008] input: Burr-Brown from TI               USB Audio
>    CODEC  as
>    /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3:1.3/input/input12
>    3. [ 1407.773331] generic-usb 0003:08BB:2904.0002: input,hidraw1: USB
>    HID v1.00 Device [Burr-Brown from TI               USB Audio CODEC ] on
>    usb-0000:00:1d.0-1.3/input3
>    4. [ 1407.863809] usbcore: registered new interface driver
>    snd-usb-audio
>
>
> On Tue, Nov 1, 2011 at 8:49 AM, Clemens Ladisch <cla...@go...>wrote:
>
>> Bharat Rajagopalan wrote:
>> > I have an old Novation X-Station 25 ...
>> > It just refuses to work in duplex mode.
>>
>> This is a known bug in the EHCI driver.  If your chipset also has OHCI
>> ("Open") or UHCI ("Universal") controllers, try connecting the device
>> directly to the PC without a hub.
>>
>> There's a recent patch that works around the most common instances of
>> this bug; it's likely to help you:
>> http://marc.info/?l=linux-usb&m=131973404328622
>>
>>
>> Regards,
>> Clemens
>>
>
>