Ok, I updated Ubuntu, and now the onboard device is working again.
With the usb device unplugged:
*sudo dmesg -c
[ 496.692447] usb 2-1.2: USB disconnect, device number 3*
With the usb plugged again:
*
sudo dmesg -c
[ 1144.857836] usb 2-1.2: new high-speed USB device number 4 using ehci_hcd
[ 1144.951520] usb 2-1.2: New USB device found, idVendor=1235,
idProduct=8002
[ 1144.951531] usb 2-1.2: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 1144.951538] usb 2-1.2: Product: Scarlett 8i6 USB
[ 1144.951543] usb 2-1.2: Manufacturer: Focusrite
[ 1144.951547] usb 2-1.2: SerialNumber: 00006B8B
[ 1144.956590] usbaudio: unit 51: unexpected type 0x09
[ 1144.956640] snd-usb-audio: probe of 2-1.2:1.0 failed with error -5*
...and the last command:
*/proc/asound/cards again.
bash: /proc/asound/cards: Permission denied*
Again, in sound controller there is only the onboard device listed.
2013/3/19 Daniel Mack <zon...@gmail.com>
> On 19.03.2013 13:04, Rodolfo Thomazelli wrote:
> > 'uname -a'
> > Linux rodolfo 3.5.0-25-generic #39-Ubuntu SMP Mon Feb 25 18:26:58 UTC
> > 2013 x86_64 x86_64 x86_64 GNU/Linux
>
> That recent enought to support your sound card. Unless there is
> something in the USB descriptors the driver doesn't like.
>
> > The second command (proc/asound/cards) returns "no such file or
> directory".
>
> It's "/proc/asound/cards", with a leading "/".
>
> > In sound controller there's only a "dummy output". The command 'aplay
> > -l' gives "no sound cards found". Even the internal devices are not
> > listed now. I think this is due the ALSA installation.
> >
> > Did you see the logs that I got in ALSA installation? I got some
> errors...
>
> There's no need to install any extra driver. But yes, maybe your
> attempts to do it anyway made the situation worse.
>
> An update of Ubuntu should give you 3.5.0-26, which also ships with all
> stock modules. You can try that. Alternatively, you can try installing a
> much newer kernel. You can try if the x86_64 version of these archives
> work for you:
>
> http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-raring/
>
>
> Once you have your on-board ALSA device back, please try the following.
> Disconnect your device, and enter
>
> $ sudo dmesg -c
>
> ... then plug it back in, wait for ~5 seconds and enter
>
> $ sudo dmesg -c
>
> again. Then send the output to this list, and also check
> /proc/asound/cards again.
>
>
> Daniel
>
>
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