Hi, > > Just bought a Logitech Ultra Vision (Bus 005 Device 003: ID 046d:08c9 > > Logitech, Inc.) and fetched the latest SVN code and compiled and > > installed it. When I plug my camera to the computer, dmesg says the > > following: > > > > [31812.967386] usbcore: registered new interface driver uvcvideo > > [31812.967392] USB Video Class driver (v0.1.0) > > [80416.916669] usb 5-4: new high speed USB device using ehci_hcd and > > address 2 [80417.209159] usb 5-4: configuration #1 chosen from 1 choice > > [80417.209349] uvcvideo: Found UVC 1.00 device <unnamed> (046d:08c9) > > > > (I loaded the module manually beforehand) > > > > The /dev/video and /dev/video0 devices are created when camera is plugged > > in. > > > > But now when I try to capture images from it, I get the following > > error in dmesg: > > > > [81559.905342] uvcvideo: Failed to query (1) UVC control 1 (unit 0) : > > -110 (exp. 26). > > > > First I tried "motion", it said: > > > > [0] Processing thread 0 - config file /etc/motion/motion.conf > > [1] Thread is from /etc/motion/motion.conf > > [1] Thread started > > [1] motion-httpd/3.2.3 running, accepting connections > > [1] motion-httpd: waiting for data on port TCP 82 > > [1] No mmap falling back on read > > [1] ioctl (VIDIOCSWIN): Input/output error > > [1] Capture error calling vid_start > > [1] Thread finishing... > > > > Then I falled back to uvccapture-0.4, compiled it and tried to start: > > > > Unable to set format: 5. > > Init v4L2 failed !! exit fatal > > > > Both tries results in the same error in dmesg. > > > > Machine is a Intel D945GNT board with integrated USB2 controller. > > Linux is Ubuntu 6.10 Edgy with custom 2.6.19.1 i386 kernel. > > Timo, > > My experience with the Logitech Ultra Vision is the same except that I > used Ekiga to view the video. I have found that if you load the > module with trace set to 15, then Ekiga is able to show the picture.
There are known timing-related hardware issues with Logitech webcams. The problem doesn't affect all users. Nobody has been able to find a workaround so far (neither developers at Logitech or Linux UVC users). This might change in the future, but I don't want to give anyone false hope. I'm not working on this, as I tried everything I could think of. We haven't been able to find what exactly triggers the hardware bug. Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
