Linux.mandriva : 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

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