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webcam i-NOVIA RCW-100



Com essa nova webcam nas mãos, fui tentar fazê-la funcionar. Na
primeira máquina que eu testei, ela funcionou de cara, mas a imagem
ficou horrível [1]. Levei para outra máquina e ela não funcionou de
cara, mas conseguir fazer funcionar depois. Consegui a mesma imagem
horrível. Aparementemente o hardware é só parcialmente suportado. Se
alguém quiser dar uns pitacos...

[1] http://img339.imageshack.us/my.php?image=webcamil8.jpg

As duas máquinas tem praticamente os mesmos pacotes instalados. A
única diferença é que uma usa kernel AMD64 e a outra usa 686. Ambas
são Debian testing (Lenny) com Linux 2.6.26-5. Ambas com o gspca
instalado.

Identificação da webcam pelo lsusb:

Bus 004 Device 002: ID 0c45:602c Microdia Clas Ohlson TWC-30XOP WebCam

O /var/log/messages no micro em que a webcam funciona (AMD64):

kernel: [   85.524017] usb 4-2: new full speed USB device using
uhci_hcd and address 2
kernel: [   85.676063] usb 4-2: configuration #1 chosen from 1 choice
kernel: [   85.684282] usb 4-2: New USB device found, idVendor=0c45,
idProduct=602c
kernel: [   85.684290] usb 4-2: New USB device strings: Mfr=0,
Product=1, SerialNumber=0
kernel: [   85.684292] usb 4-2: Product: USB camera
kernel: [   85.804783] Linux video capture interface: v2.00
kernel: [   85.840817] gspca: USB GSPCA camera found. SONIX sn9c10[1 2]
kernel: [   85.840817] gspca: [spca5xx_probe:4275] Camera type SN9C
kernel: [   85.845096] gspca: [spca5xx_getcapability:1249] maxw 640
maxh 480 minw 160 minh 120
kernel: [   85.845189] usbcore: registered new interface driver gspca
kernel: [   85.845194] gspca: gspca driver 01.00.20 registered
kernel: [   85.869173] sn9c102: V4L2 driver for SN9C1xx PC Camera
Controllers v1:1.47pre49
kernel: [   85.869210] usbcore: registered new interface driver sn9c102
kernel: [   85.936090] gspca: [spca5xx_set_light_freq:1932] Sensor
currently not support light frequency banding filters.
kernel: [   85.936104] gspca: [gspca_set_isoc_ep:945] ISO EndPoint
found 0x81 AlternateSet 8

O /var/log/messages no micro em que a webcam não funcionava (686):

kernel: [  291.213305] usb 2-7: new full speed USB device using
ohci_hcd and address 4
kernel: [  291.575961] usb 2-7: configuration #1 chosen from 1 choice
kernel: [  291.581675] usb 2-7: New USB device found, idVendor=0c45,
idProduct=602c
kernel: [  291.581675] usb 2-7: New USB device strings: Mfr=0,
Product=1, SerialNumber=0
kernel: [  291.581675] usb 2-7: Product: USB camera
kernel: [  291.791602] Linux video capture interface: v2.00
kernel: [  291.840295] sn9c102: V4L2 driver for SN9C1xx PC Camera
Controllers v1:1.47pre49
kernel: [  291.840500] usb 2-7: SN9C10[12] PC Camera Controller
detected (vid:pid 0x0C45:0x602C)
kernel: [  291.976300] usb 2-7: OV7630 image sensor detected
kernel: [  292.416319] usb 2-7: Initialization succeeded
kernel: [  292.416319] usb 2-7: V4L2 device registered as /dev/video0
kernel: [  292.416319] usb 2-7: Optional device control through
'sysfs' interface disabled
kernel: [  292.416319] usbcore: registered new interface driver sn9c102
kernel: [  292.706828] usbcore: registered new interface driver gspca
kernel: [  292.706834] gspca: gspca driver 01.00.20 registered

Procurando na web, a única sugestão que eu achei foi de incluir o
sn9c102 em /etc/modprobe.d/blacklist [2]. Achei estranho pois esse
módulo não está blacklisted no micro que funciona. Apesar disso,
colocar na blacklist funcionou.

[2] http://ubuntuforums.org/showthread.php?t=242364

-- 
Bruno Schneider
http://www.dcc.ufla.br/~bruno/


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