gspca: webcam produces blank/black screen - SOLVED

[mungewell]

Binary package hint: gspca-source

I have a cheap webcam which just produces a blank/black screen. It appears to be supported by the gspca modules by dmesg report 'UKNOW SENSOR'.

lsusb details:
Bus 001 Device 010: ID 0ac8:307b Z-Star Microelectronics Corp. USB 1.1 WebCam

Vendor link:
http://www.shopxscargo.com/product_catalogue/cat_product_details.asp?category_id=13&product_code=24321&sub_category_1_id=41&category=Computers

I suspect that the coding of the sensor is just not recognised, so I loaded the module with extra debug ('sudo modprobe gspca_main debug=0x0F'). See attached files.

Testing performed on Jaunty Alpha3 Live-CD, as installed system is too old to support this webcam.
Simon.

[mungewell (simon-mungewell)]

Played with 'force_sensor' and xawtv

sudo modprobe gspca_zc3xx force_sensor=7:
--
Got a strippy multicolour image and lots of logs
libv4lconvert: Error decompressing JPEG: error: more then 63 AC components (68) in huffman unit
--

All other values produced blank screen.

[mungewell (simon-mungewell)]

Still not working under Jaunty alpha 6 :-(

So I took apart to take some internal pictures. The board is labeled 'ZS0211 + 6211', presumably this refers to IC and sensor.

Cheers,
Mungewell.

[mungewell (simon-mungewell)]

looks to be a similar camera:
http://www.pricefavor.com/product/product_view.asp?productID=CNSD

[mungewell (simon-mungewell)]

Strings found Windows driver 'ZS211Prp.Ax'
\HV7131B -NO 64 Pin LQFP, http://pdfdata.datasheetsite.com/web/214464/HV7131B.pdf
\HV7121B -NO 48Pin CLCC / 20Pin CDIP, http://www.datasheetcatalog.org/datasheet/hynix/HV7121B.pdf
\TAS5130C ...
\TAS5110B ...
\CS2102 - NO 48 SPLCC http://www.icwic.cn/icwic/data/pdf/cd/cd035/Image%20Sensor/a/185433.pdf
\CS2103 - NO 48 SPLCC http://www.datasheetarchive.com/pdf/Datasheet-04/DSA0067614.pdf
\OV7620 - NO 28 LCC, http://www.datasheets.org.uk/pdf/2647691.pdf
\OVCIF ...
\HDCS2020 NO 32 pin
\HDCS1020 NO 32 pin
\PB0330 No 48 PLCC
\PB0111 ...
\ICM105A No LCC48, http://www.wise-electronic.com/download/icmedia/ICM105A%20V0.9%20-%20032001%20(commercial).pdf
\ICM102A No LCC48, http://www.datasheetcatalog.org/datasheets2/31/313611_1.pdf
\PAS202B No 28/32 LCC, http://mxhaard.free.fr/spca50x/Doc/PixArt/PAS202B.PDF
\PAS106B No 28/32 LCC, http://mxhaard.free.fr/spca50x/Doc/PixArt/PAS106B.pdf

I'm wondering...
OV7670/80-VL2A 24pin CSL http://www.semic.cn/admin/bookpic/OV7670_DS%20(1.3)1.pdf
Possibly put on small carrier board?

[mungewell (simon-mungewell)]

following the instructions here:
http://moinejf.free.fr/gspca_README.txt

I managed to get the webcam working.
--
Mar 24 22:58:01 bourne kernel: [40390.346066] gspca: main v2.5.0 registered
Mar 24 22:58:01 bourne kernel: [40390.356415] gspca: probing 0ac8:307b
Mar 24 22:58:02 bourne kernel: [40392.080080] zc3xx: probe 2wr ov vga 0x0000
Mar 24 22:58:02 bourne kernel: [40392.198900] zc3xx: probe 3wr vga 1 0x4001
Mar 24 22:58:02 bourne kernel: [40392.204896] zc3xx: probe sensor -> 0016
Mar 24 22:58:02 bourne kernel: [40392.204906] zc3xx: Find Sensor ADCM2700
Mar 24 22:58:03 bourne kernel: [40392.218620] gspca: probe ok
Mar 24 22:58:03 bourne kernel: [40392.221060] usbcore: registered new interface driver zc3xx
Mar 24 22:58:03 bourne kernel: [40392.221075] zc3xx: registered
Mar 24 23:10:18 bourne kernel: [41127.992172] usb 2-1: USB disconnect, address 3
Mar 24 23:10:18 bourne kernel: [41128.000323] gspca: disconnect complete
--

[Launchpad Janitor (janitor)]

[Expired for gspca (Ubuntu) because there has been no activity for 60 days.]