Hi I've installed kubuntu 12.04 on my desktop (from kubuntu 10.04) and now the webcam doesn't work, below the are some command lsusb Bus 001 Device 002: ID 041e:4058 Creative Technology, Ltd Live! Cam Optia AF Bus 002 Device 003: ID 07ca:850a AVerMedia Technologies, Inc. AverTV Volar Black HD (A850) Bus 005 Device 002: ID 045e:0734 Microsoft Corp. Wireless Optical Desktop 700 ~$ dmesg | grep usb [ 0.575334] usbcore: registered new interface driver usbfs [ 0.575334] usbcore: registered new interface driver hub [ 0.575334] usbcore: registered new device driver usb [ 2.164030] usb 1-4: new high speed USB device number 2 using ehci_hcd [ 2.728040] usb 2-3: new high speed USB device number 3 using ehci_hcd [ 3.128067] usb 5-1: new low speed USB device number 2 using ohci_hcd [ 3.318195] input: Liteon Microsoft® Wireless Receiver 700 v2.0 as /devices/pci0000:00/0000:00:13.0/usb5/5-1/5-1:1.0/input/input2 [ 3.318255] generic-usb 0003:045E:0734.0001: input,hidraw0: USB HID v1.11 Keyboard [Liteon Microsoft® Wireless Receiver 700 v2.0] on usb-0000:00:13.0-1/input0 [ 3.332228] input: Liteon Microsoft® Wireless Receiver 700 v2.0 as /devices/pci0000:00/0000:00:13.0/usb5/5-1/5-1:1.1/input/input3 [ 3.332297] generic-usb 0003:045E:0734.0002: input,hidraw1: USB HID v1.11 Mouse [Liteon Microsoft® Wireless Receiver 700 v2.0] on usb-0000:00:13.0-1/input1 [ 3.332309] usbcore: registered new interface driver usbhid [ 3.332310] usbhid: USB HID core driver [ 15.113133] usbcore: registered new interface driver snd-usb-audio [ 15.120717] input: UVC Camera (041e:4058) as /devices/pci0000:00/0000:00:12.2/usb1/1-4/1-4:1.0/input/input6 [ 15.120816] usbcore: registered new interface driver uvcvideo [ 15.488022] dvb-usb: found a 'AverMedia AVerTV Volar Black HD (A850)' in cold state, will try to load a firmware [ 15.530772] dvb-usb: downloading firmware from file 'dvb-usb-af9015.fw' [ 15.598250] dvb-usb: found a 'AverMedia AVerTV Volar Black HD (A850)' in warm state. [ 15.598289] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer. [ 15.606392] dvb-usb: AverMedia AVerTV Volar Black HD (A850) successfully initialized and connected. [ 15.612650] usbcore: registered new interface driver dvb_usb_af9015 $ dmesg | grep UVC [ 15.117016] uvcvideo: Found UVC 1.00 device (041e:4058) [ 15.120717] input: UVC Camera (041e:4058) as /devices/pci0000:00/0000:00:12.2/usb1/1-4/1-4:1.0/input/input6 $ lsmod | grep uvcvideo uvcvideo 72711 0 videodev 93004 1 uvcvideo $ ls -l /dev/video* crw-rw----+ 1 root video 81, 0 2011-11-02 19:28 /dev/video0 the webcam doesn't work with any software, in the google search I found the same problem on fedora on link https://bugzilla.redhat.com/show_bug.cgi?id=739448 If I downgrade the kernel to 2.6.38.12 the webcam work fine !! I think that the problem is on the UVC driver on the kernel after 2.6.38.12 to latest kernel Thanks Tiziano -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
