[Nw802-main] Black screen

[Camille H. <ca...@ca...>]

Hi

I got a "Mustek Wcam 300 mini", the device informations in
/proc/bus/usb/devices are:

C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=  0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   8 Ivl=255ms
T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  7 Spd=12  MxCh= 0
D:  Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=055f ProdID=d001 Rev= 1.00

So the Vendor and ProdID are the same as the Mustek Wcam300.

The driver is well recognizing the webcam at the webcam plug:

hub.c: USB new device connect on bus1/1, assigned device number 7
nw802.c: Compatible DivIO NW80x based webcam found ! [Mustek WCam 300 /
PCLine PCL-W300]

and the /dev/video0 is well created in my devfs.


Now the problems:

I launch xawtv and I see a black screen. The output messages are:

This is xawtv-3.86, running on Linux/i686 (2.4.19-xfs)
/dev/v4l/video0 [v4l]: no overlay support
v4l-conf had some trouble, trying to continue anyway
Warning: Cannot convert string
"-*-ledfixed-medium-r-*--39-*-*-*-c-*-*-*" to type FontStruct Warning:
Missing charsets in String to FontSet conversion Warning: Cannot convert
string "-*-ledfixed-medium-r-semicondensed--39-*-*-*-c-*-*-*, 
-*-bitstream vera sans-medium-r-normal--39-*-*-*-*-*-*-*,           
-*-luxi sans-medium-r-normal--39-*-*-*-*-*-*-*,                         
 -*-*-r-normal--39-*-*-*-*-*-*-*,                               
-*-*-*-*--39-*-*-*-*-*-*-*,*" to type FontSet ioctl:
VIDIOCMCAPTURE(frame=0;height=4;width=4;format=7): Argument invalide
ioctl: VIDIOCMCAPTURE(frame=0;height=4;width=4;format=15): Argument
invalide ioctl: VIDIOCMCAPTURE(frame=0;height=4;width=4;format=9):
Argument invalide ioctl:
VIDIOCMCAPTURE(frame=0;height=4;width=4;format=5): Argument invalide


And in the dmesg (for the driver debug):

Mar 22 16:57:27 poseidon kernel: usbvideo.c: Packet Statistics:
Total=64. Empty=64. Usage=0%% Mar 22 16:57:27 poseidon kernel:
usbvideo.c: Transfer Statistics: Transferred=0 B Usage=0%% Mar 22
16:57:27 poseidon kernel: usbvideo.c: Packet Statistics: Total=64.
Empty=64. Usage=0%% Mar 22 16:57:27 poseidon kernel: usbvideo.c:
Transfer Statistics: Transferred=0 B Usage=0%% Mar 22 16:57:27 poseidon
kernel: usbvideo.c: Packet Statistics: Total=64. Empty=64. Usage=0%% Mar
22 16:57:27 poseidon kernel: usbvideo.c: Transfer Statistics:
Transferred=0 B Usage=0%%

Et voila.

The mustek wcam 300 should work (as it is reported to do), do you have
any clue, advice, experience report concerning this problem ?

Bye

-- 
Camille HUOT - <ca...@ca...>
cam on #gentoofr at irc.freenode.net
public key available at http://www.cameuh.net/infos/