[sf-lug] USB mic not working under 14.04

[Michael Paoli]

Well, thanks for not putting the 800+ lines of stuff to the list, and using
pastebin ... but that's still 800+ lines of stuff - looks like from start
of some boot or the like, so most of it wouldn't be relevant to the bit of
script I provided, so ... if there is some relevant bit, I'm not going to wade
through 800+ lines of at least mostly irrelevant stuff to look for some slight
bit that might be relevant.

Also, looking at the tail end of it - looks like you pasted the script to
CLI ... but cut off that output before the portion where one inserts the
USB device, then presses <ENTER> ... so - looks like you didn't complete
that all important portion of it - or the gathering/reporting of that part of
the data.

> From: "Christian Einfeldt" <einfeldt at gmail.com>
> Subject: Re: [sf-lug] USB mic not working under 14.04
> Date: Fri, 7 Sep 2018 00:47:04 -0700

> 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.
>>
>>
>