[Sugar-devel] XO 1.5 with USB webcam

Paul Fox pgf at laptop.org
Mon Nov 16 12:59:41 EST 2009

martin wrote:
 > On Mon, Nov 16, 2009 at 4:27 PM, Andrés Nacelle
 > <anacelle at plan.ceibal.edu.uy> wrote:
 > > webcam eurocase EUCC760, lsusb gives: ID 0c45:612a Microdia PC Camera 
 > (SN9C325)
 > Is the webcam UVC? Is it known to work under other recent linuxes,
 > specially recent Fedoras? If so, with which driver?
 > On the XO, what does dmesg say right after you've plugged it in?

even if the camera works under linux (and it looks like the gspca
driver may support it), we don't build or include any multimedia
drivers in our builds.

there's a long-standing need here, and we could really use a
volunteer to take this on -- their work would have a huge
multiplier in helping other folks.  the need is expressed in
http://dev.laptop.org/ticket/7326 -- there should be an
add-on rpm consisting of all the modules that someone might want
to support USB devices, but which aren't commonly enough needed 
for us to include in the base distribution.  (i suppose we could
also do it as a separate, "full" kernel rpm -- perhaps that would
be safer.)


 > The general state of the usb webcam is kind of horrible. Cameras are
 > full of strange quirks and misbehaviours that are hard for any driver
 > to keep in sync with.
 > The best I can recommend is to look for a UVC-compliant camera... that
 > is known to work with Linux's UVC driver. There are some UVC cameras
 > that don't work, mainly due to odd UVC quirks.
 > In general, I keep a Fedora 9 and a Fedora 11 system around. When I
 > see something odd like that on an XO, I test it on the vanilla Fedora.
 > Helps a lot to narrow down quickly on whether it's an OLPC specific
 > issue or a base OS issue.
 > hth,
 > m
 > -- 
 >  martin.langhoff at gmail.com
 >  martin at laptop.org -- School Server Architect
 >  - ask interesting questions
 >  - don't get distracted with shiny stuff  - working code first
 >  - http://wiki.laptop.org/go/User:Martinlanghoff
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 paul fox, pgf at laptop.org

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