webcamd and Pixart Imaging

[David Naylor]

On Thursday 02 September 2010 16:27:57 Hans Petter Selasky wrote:
> On Thursday 02 September 2010 12:43:12 David Naylor wrote:
> > On Thursday 02 September 2010 11:08:55 Hans Petter Selasky wrote:
> > > On Thursday 02 September 2010 10:57:52 David Naylor wrote:
> > > > On Wednesday 01 September 2010 09:19:55 Hans Petter Selasky wrote:
> > > > > > Will it matter if my kernel is a bit old (about 3 months)?  Are
> > > > > > there any (small) live linux distros that have good webcam
> > > > > > support (so that I can check if the cam works at all with
> > > > > > gspca)?
> > > > > > 
> > > > > > David
> > > > > 
> > > > > Maybe you could check your webcam in Ubuntu?
> > > > > 
> > > > > --HPS
> > > > 
> > > > Just before I was about to check the webcam with Ubuntu  I tried it
> > > > on another computer... and it worked.
> > > > 
> > > > To make sure: I copied across the debug build of webcam and it worked
> > > > with that as well.  It certainly is not the software on the webcamd
> > > > side. cuse4bsd is the same on both computers.  Both systems are
> > > > running different custom kernels but contain the same usb devices
> > > > (the same as GENERIC).
> > > > 
> > > > On the computer that works `pwcview -s vga` does not work.  I expect
> > > > that to be a limitation of the device.
> > > > 
> > > > On the other computer, I tried every USB port and none of them work.
> > > > The USB controllers are:
> > > > 
> > > > ohci0 at pci0:0:11:0:      class=0x0c0310 card=0x50041458
> > > > chip=0x026d10de rev=0xa3 hdr=0x00
> > > > 
> > > >     vendor     = 'NVIDIA Corporation'
> > > >     device     = 'MCP51 USB Controller'
> > > >     class      = serial bus
> > > >     subclass   = USB
> > > > 
> > > > ehci0 at pci0:0:11:1:      class=0x0c0320 card=0x50041458
> > > > chip=0x026e10de rev=0xa3 hdr=0x00
> > > > 
> > > >     vendor     = 'NVIDIA Corporation'
> > > >     device     = 'MCP51 USB Controller'
> > > >     class      = serial bus
> > > >     subclass   = USB
> > > > 
> > > > The USB ports do work for umass, u3g and umodem devices.  Will the
> > > > kernel version have an impact, should I upgrade to head?
> > > > 
> > > > The webcam works with Ubuntu on both computers.
> > > 
> > > There has been some updates in the kernel in the USB area (isochronous
> > > transfers), which might affect Webcam operation.
> > 
> > I've updated the kernel, cuse4bsd (0.1.13) and webcamd (0.1.15).  Still
> > no luck.
> 
> Do one of the PC's have an internal USB HUB perhaps?

Both only have root HUBs:

(Computer that works):
ugen4.1: <UHCI root HUB Intel> at usbus4, cfg=0 md=HOST spd=FULL (12Mbps) 
pwr=ON
ugen4.2: <CIF Single Chip Pixart Imaging Inc.> at usbus4, cfg=0 md=HOST 
spd=FULL (12Mbps) pwr=ON

(Computer that does not work):
ugen0.1: <OHCI root HUB nVidia> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) 
pwr=SAVE
ugen0.2: <CIF Single Chip Pixart Imaging Inc.> at usbus0, cfg=0 md=HOST 
spd=FULL (12Mbps) pwr=ON

The only difference is the chipset (and that nvidia is in power save mode).  I 
tried `usbconfig -d 0.1 power_on` but that failed ``invalid argument''.  
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