[sf-lug] USB mic not working under 14.04

[Christian Einfeldt]

Hi Michael,

Thanks for the offer of your script.  I tried to use it, but I think I made
a huge mistake, because this is what I got, just a big mess.  I must have
made some mistake.  I basically tried to copy and paste the whole thing
into a terminal, and this is what came out, sorry:

https://pastebin.com/RYBNeBmg

So I tried just running dmesg before and after plugging in the device.  I
have pasted the output below.  Rick, sorry for the fact that my pastes
previously were wrapped, not sure how that happened, as they did not appear
wrapped on my screen when I hit send.  Here is the output from running diff
on the dmesg outputs before and after plugging in the microphone.
Hopefully it will not be wrapped, as it does not appear wrapped to me as I
am sending it.

me at mycomputer:~/Documents$ diff diff-before.txt diff-after.txt
899a900,905
> [26032.229821] usb 1-1.4: new full-speed USB device number 7 using
ehci-pci
> [26032.323093] usb 1-1.4: New USB device found, idVendor=0d8c,
idProduct=000c
> [26032.323107] usb 1-1.4: New USB device strings: Mfr=0, Product=1,
SerialNumber=0
> [26032.323110] usb 1-1.4: Product: C-Media USB Headphone Set
> [26032.337938] input: C-Media USB Headphone Set   as
/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.3/0003:0D8C:000C.0007/input/input17
> [26032.394136] hid-generic 0003:0D8C:000C.0007: input,hidraw2: USB HID
v1.00 Device [C-Media USB Headphone Set  ] on usb-0000:00:1a.0-1.4/input3
me at mycomputer:~/Documents$

The curious thing is that this mic does work immediately with no issues
when plugged into a Chromebook, so it has been demonstrated to be a
functioning mic and to work with ChromeOS, which is a type of Linux, right?

Thanks again to everyone who has replied to this thread.

On Thu, Sep 6, 2018 at 9:58 PM Michael Paoli <Michael.Paoli at cal.berkeley.edu>
wrote:

> Well, I do find my usbdiff to be quite handy.
>
> E.g. run usbdiff, plug in some USB device, hit <ENTER> ... and get
> just the info on the differences, in nice concise - but sufficiently
> detailed form - at least for most purposes I'd be interested in,
> example:
> # usbdiff
> Connect USB device, then press <RETURN> when ready to continue:
> USB identification:
> ID 04d9:1702 Holtek Semiconductor, Inc.
> Vendor 0x04d9 Holtek Semiconductor, Inc.
> Product 0x1702 USB Keyboard
> Serial
> #
>
> And none of the clutter of all the other USB stuff I'm not interested
> in at the moment.
>
>
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