Comment 47 for bug 884210

Similar problem with Logitech C270 Webcam in Ubuntu 13.04 _Raring Ringtail_ – Release amd64 (20130424): cannot set freq 48000 to ep 0×86. This release comes with kernel 3.8.0-19.

I’ve tested newer kernels:
v3.9.11-saucy/ – BUGGY
v3.10-rc1-saucy/ – Won’t boot
v3.10-rc2-saucy/ – Won’t boot
v3.10-rc3-saucy/ – Partial fixed. The message doesn’t seem to appear anymore, in Unity I see that the microphone receives sound, but arecord can’t record it. [1]
v3.10-rc4-saucy/ – haven’t tested it
v3.10-rc5-saucy/ – seems to work [2]
v3.11-rc2-saucy/ – seems ok too. ( http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11-rc2-saucy/ )

[1] Linux a 3.10.0-031000rc3-generic #201305261935 SMP Sun May 26 23:35:53 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
[ 41.198496] usb 2-2: new high-speed USB device number 3 using ehci-pci
[ 41.546591] usb 2-2: New USB device found, idVendor=046d, idProduct=0825
[ 41.546595] usb 2-2: New USB device strings: Mfr=0, Product=0, SerialNumber=2
[ 41.546597] usb 2-2: SerialNumber: A49568E0
[ 41.546879] uvcvideo: Found UVC 1.00 device (046d:0825)
[ 41.643274] input: UVC Camera (046d:0825) as /devices/pci0000:00/0000:00:13.2/usb2/2-2/2-2:1.0/input/input14
[ 41.672696] usb_audio: Warning! Unlikely big volume range (=6144), cval->res is probably wrong.
[ 41.672698] usb_audio: [5] FU [Mic Capture Volume] ch = 1, val = 1536/7680/1[ 57.272287] usb 2-2: USB disconnect, device number 3

[2] Linux a 3.10.0-031000rc5-generic #201306082135 SMP Sun Jun 9 01:36:22 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
[ 907.201457] usb 2-2: new high-speed USB device number 5 using ehci-pci
[ 907.549600] usb 2-2: New USB device found, idVendor=046d, idProduct=0825
[ 907.549611] usb 2-2: New USB device strings: Mfr=0, Product=0, SerialNumber=2
[ 907.549618] usb 2-2: SerialNumber: A49568E0
[ 907.550048] uvcvideo: Found UVC 1.00 device (046d:0825)
[ 907.646607] input: UVC Camera (046d:0825) as /devices/pci0000:00/0000:00:13.2/usb2/2-2/2-2:1.0/input/input16
[ 907.676560] set resolution quirk: cval->res = 384