Hi Marcel, first of all, as stated on the quickcamteam.net website, please don't use their contact e-mail address for support questions. If you want to post a support request, use their forum.
On Tuesday 29 July 2008, Marcel van Beurden wrote: > Hi, > > After lots of problems with my Quickcam Fusion, I decided to dump it (gave > it away to someone with Windows actually) and buy a new one: the Quickcam > S5500. > > The good news is, all the USB-timing problems seem to be gone and the UVC > driver (SVN r239) does not report any problems. Also, no more application > crashes. The bad news is that it does act a bit weird: sometimes the cam > gives a all black or all gray image. Changing brightness or contrast does > not solve it. When I a gray image, it will stay gray, whatever I try. When > I have a black image and put the brightness at 100%, aim the cam at a > light, I can see the light, but like through welding glasses... > > I tried it with aMSN and luvcview. With luvcview (0.2.1) the image will be > black and the controls are not visible, but I can change them (no effect). > Als luvcview will not close until I unplug the cam. > > The problem does not happen always (let's say 50% of the cases) and I did > not find a good way to reproduce or solve it. I have no idea whether this > is a firmware problem (again) or a problem with the driver. > > Anything I can do to debug this problem? Some applications paint the video display window to black before starting video streaming, so a black window could mean that no image is received by the application. This isn't the case here as aiming the camera at light shows motion. I've never encountered a similar issue with Logitech webcams and I can't really think of anything on the driver's side that could cause such problems. The driver would at least spit an error message to the kernel log if it can't read or write a control. You should post a message to the quickcamteam.net forums. They should have more information about Logitech webcam issues than I got. Best regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
