[cpia] Problem with cpia-0.7.4

Jacob Nikom nikom@merl.com
Tue, 25 Apr 2000 18:44:37 -0400


Hi Johannes,

I appreciate your help very much. Here is my directory
/proc/bus/usb  and its content:

[ usb]# pwd
/proc/bus/usb
[ usb]# ls -l 
total 0
dr-xr-xr-x    1 root     root            0 Apr 25 17:40 001
-r--r--r--    1 root     root            0 Apr 25 17:40 devices
-r--r--r--    1 root     root            0 Apr 25 17:40 drivers
[ usb]# 

[ prompt]# more devices
T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=12  MxCh= 2
B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
D:  Ver= 1.00 Cls=09(hub  ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0000 ProdID=0000 Rev= 0.00
S:  Product=USB UHCI Root Hub
S:  SerialNumber=ff80
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=01 Cnt=01 Dev#=  2 Spd=12  MxCh= 0
D:  Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0553 ProdID=0002 Rev= 1.00
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=400mA
I:  If#= 1 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=ff Driver=(none)
E:  Ad=81(I) Atr=01(Isoc) MxPS=   0 Ivl=  1ms
I:  If#= 1 Alt= 1 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=ff Driver=(none)
E:  Ad=81(I) Atr=01(Isoc) MxPS= 448 Ivl=  1ms
I:  If#= 1 Alt= 2 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=ff Driver=(none)
E:  Ad=81(I) Atr=01(Isoc) MxPS= 704 Ivl=  1ms
I:  If#= 1 Alt= 3 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=ff Driver=(none)
E:  Ad=81(I) Atr=01(Isoc) MxPS= 960 Ivl=  1ms

[ prompt]# more drivers
         hub
         usbdevfs
[ prompt]# more drivers

Regards,

Jacob Nikom


Johannes Erdfelt wrote:
> 
> On Tue, Apr 25, 2000, Jacob Nikom <nikom@merl.com> wrote:
> >
> > Thank you very much for your help. I followed your advice and
> > mounted the device using fstab. Here is my fstab file:
> >
> > /dev/video              /proc/bus/usb           usbdevfs
> > defaults        0 0
> 
> This is incorrect. It happens to work, but it should read:
> 
> none            /proc/bus/usb   usbdevfs        defaults        0 0
> 
> > However, the gqcam program still cannot recognize the video device:
> >
> > prompt>gqcam
> > /dev/video: No such device
> >
> > I thought I need "video0" instead of "video" and recompiled frontend.c
> > but it did not help.
> > Do you know what could be wrong?
> 
> video is a symlink to video0 on your machine so they are identical.
> 
> Could you give me the output of /proc/bus/usb/devices?
> 
> JE