Webcam usb détectée mais n'affiche rien

Depuis que j'ai upgradé par URPMI ma 10.1 en 2005LE ma webcam ne marche plus.
Voici ce que m'affiche "dmesg"

usbcore: registered new driver usbfs

usbcore: registered new driver hub

USB Universal Host Controller Interface driver v2.2

ohci_hcd: 2004 Nov 08 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)

ohci_hcd 0000:00:02.0: OHCI Host Controller

PCI: Setting latency timer of device 0000:00:02.0 to 64

ohci_hcd 0000:00:02.0: irq 5, pci mem 0xe4080000

ohci_hcd 0000:00:02.0: new USB bus registered, assigned bus number 1

hub 1-0:1.0: USB hub found

hub 1-0:1.0: 3 ports detected

ohci_hcd 0000:00:02.1: OHCI Host Controller

PCI: Setting latency timer of device 0000:00:02.1 to 64

ohci_hcd 0000:00:02.1: irq 10, pci mem 0xe4083000

ohci_hcd 0000:00:02.1: new USB bus registered, assigned bus number 2

hub 2-0:1.0: USB hub found

hub 2-0:1.0: 3 ports detected

ehci_hcd 0000:00:02.2: EHCI Host Controller

PCI: Setting latency timer of device 0000:00:02.2 to 64

ehci_hcd 0000:00:02.2: irq 11, pci mem 0xe4086000

ehci_hcd 0000:00:02.2: new USB bus registered, assigned bus number 3

PCI: cache line size of 64 is not supported by device 0000:00:02.2

ehci_hcd 0000:00:02.2: park 0

ehci_hcd 0000:00:02.2: USB 2.0 initialized, EHCI 1.00, driver 10 Dec 2004

hub 3-0:1.0: USB hub found

hub 3-0:1.0: 6 ports detected

ohci_hcd 0000:00:02.1: wakeup

usb 1-3: new full speed USB device using ohci_hcd and address 3

usb 2-3: new full speed USB device using ohci_hcd and address 2

hub 2-3:1.0: USB hub found

hub 2-3:1.0: 4 ports detected

usb 1-1: new full speed USB device using ohci_hcd and address 4

Linux video capture interface: v1.00

3rdparty/ov511/ov511_core.c: USB OV511+ video device found

3rdparty/ov511/ov511_core.c: model: Generic Camera (id=0)

EXT3 FS on sda1, internal journal

3rdparty/ov511/ov511_core.c: Device at usb-0000:00:02.0-1 registered to minor 0

usbcore: registered new driver ov511

3rdparty/ov511/ov511_core.c: v2.28 : ov511 USB Camera Driver (V4L2 disabled)

kobject_register failed for ov511 (-17)

 [] dump_stack+0x1e/0x20

 [] kobject_register+0x5b/0x70

 [] bus_add_driver+0x71/0xd0

 [] driver_register+0x31/0x40

 [] usb_register+0x4a/0xb0 [usbcore]

 [] usb_ov511_init+0x13/0x36 [ov511]

 [] sys_init_module+0x1e2/0x270

 [] sysenter_past_esp+0x52/0x75

usbcore: error -17 registering driver ov511

puis à la fin:

3rdparty/ov511/ov511_core.c: No sensor is detected yet

3rdparty/ov511/ov511_core.c: No sensor is detected yet

3rdparty/ov511/ov511_core.c: No sensor is detected yet

eth2: no IPv6 routers present

3rdparty/ov511/ov511_core.c: No sensor is detected yet

La webcam s'affiche sur le bureau et dans drakconf comme avant sous 10.1 mais pas moyen d'afficher une image sous gnomemeeting