Well it was stated that a text file with that info is now included
in the kernel tree (ie in the Documentation subdir), but I saw
elsewhere it wasnt. I grep'd it from the driver source a while ago,
but I note the kernel source I now have no longer lists 128. I would
suspect they "fixed" the bandwidth problem permanently. This is all
of course clouded by my use of the oldish kernel!
I now have a larger problem with the computer now hanging! I may
even look at downgrading the kernel now.. I have just disabled the
MB USB ports and changed both cameras to MJPEG palette running on
the PCI USB card. It is working okay for the moment. I just want it
going for a trip away (ie for house security) so I'll leave the
scientific fiddling for when I get back!
The uvc project is more or less here;
I wondered about that pasted/zagged chunks thing. Yes I have seen
that here too. I have also removed the IR filter from these cameras
and change the colour/contrast/bright etc through v4lctl to get
better night images. I think though that the "focus" is badly
affected by the sensitivity up into IR now. The shorter lambda light
and all that. My driver interest is actually around only making the
red sensors active for that reason. Am also playing with IR LEDs.
What is your actual USB/hardware setup and what palettes are you
On 04/25/2011 09:05 PM, GSO wrote:
Are quirks documented anywhere?
The only linux I've been able to get all my webcams (3xLogitech
and a Trust) working on has been RedHat - otherwise the Trust is
often not supported, or interference between cameras: chunks of
the image cut and paste themselves around the image (sometimes
blocks, other times jagged chunks) and possibly from one camera to