I have an Acer Travelmate 5720 with a Crystal Eye built in webcam which works only sporadicly. This is a trace from the syslog. I opened Kopete and could see the image of the webcam. Then I closed it and reopened which resulted in freezing Kopete. While that I got the following syslog entries:


Sep 15 18:41:19 becconmobil kernel: [ 2027.451199] usb 3-1: new high speed USB device using ehci_hcd and address 15
Sep 15 18:41:19 becconmobil kernel: [ 2027.592376] usb 3-1: configuration #1 chosen from 1 choice
Sep 15 18:41:19 becconmobil kernel: [ 2027.592731] uvcvideo: Found UVC 1.00 device Acer CrystalEye webcam (064e:a101)
Sep 15 18:41:19 becconmobil NetworkManager: <debug> [1221496879.159130] nm_hal_device_added(): New device added (hal udi is '/org/freedesktop/Hal/devices/usb_device_64e_a101_CN0314_OV03_VA_R02_00_00').
Sep 15 18:41:19 becconmobil NetworkManager: <debug> [1221496879.330856] nm_hal_device_added(): New device added (hal udi is '/org/freedesktop/Hal/devices/usb_device_64e_a101_CN0314_OV03_VA_R02_00_00_if1').
Sep 15 18:41:19 becconmobil NetworkManager: <debug> [1221496879.373021] nm_hal_device_added(): New device added (hal udi is '/org/freedesktop/Hal/devices/usb_device_64e_a101_CN0314_OV03_VA_R02_00_00_if0').
Sep 15 18:41:19 becconmobil NetworkManager: <debug> [1221496879.403328] nm_hal_device_added(): New device added (hal udi is '/org/freedesktop/Hal/devices/usb_device_64e_a101_CN0314_OV03_VA_R02_00_00_if0_video4linux').
Sep 15 18:41:44 becconmobil ovpn-openvpn[5348]: RESOLVE: Cannot resolve host address: miradata.d2g.com: [HOST_NOT_FOUND] The specified host is unknown.
Sep 15 18:41:50 becconmobil kernel: [ 2054.866482] uvcvideo: Failed to query (1) UVC control 9 (unit 3) : -32 (exp. 2).
Sep 15 18:41:50 becconmobil kernel: [ 2054.953841] uvcvideo: Failed to query (1) UVC control 9 (unit 3) : -32 (exp. 2).
Sep 15 18:41:50 becconmobil kernel: [ 2054.970761] uvcvideo: Failed to query (1) UVC control 9 (unit 3) : -32 (exp. 2).
Sep 15 18:41:50 becconmobil kernel: [ 2055.273409] usb 3-1: USB disconnect, address 15
Sep 15 18:41:50 becconmobil NetworkManager: <debug> [1221496910.578523] nm_hal_device_removed(): Device removed (hal udi is '/org/freedesktop/Hal/devices/usb_device_64e_a101_CN0314_OV03_VA_R02_00_00_if0').
Sep 15 18:41:50 becconmobil NetworkManager: <debug> [1221496910.581498] nm_hal_device_removed(): Device removed (hal udi is '/org/freedesktop/Hal/devices/usb_device_64e_a101_CN0314_OV03_VA_R02_00_00_if1').
Sep 15 18:41:50 becconmobil NetworkManager: <debug> [1221496910.582698] nm_hal_device_removed(): Device removed (hal udi is '/org/freedesktop/Hal/devices/usb_device_64e_a101_CN0314_OV03_VA_R02_00_00').
Sep 15 18:41:50 becconmobil NetworkManager: <debug> [1221496910.584378] nm_hal_device_removed(): Device removed (hal udi is '/org/freedesktop/Hal/devices/usb_device_64e_a101_CN0314_OV03_VA_R02_00_00_if0_video4linux').
Sep 15 18:41:51 becconmobil kernel: [ 2055.786204] usb 1-1: new full speed USB device using uhci_hcd and address 3
Sep 15 18:41:51 becconmobil kernel: [ 2055.906143] usb 1-1: device descriptor read/64, error -71
Sep 15 18:41:51 becconmobil kernel: [ 2056.129996] usb 1-1: device descriptor read/64, error -71
Sep 15 18:41:51 becconmobil kernel: [ 2056.345871] usb 1-1: new full speed USB device using uhci_hcd and address 4
Sep 15 18:41:51 becconmobil kernel: [ 2056.465796] usb 1-1: device descriptor read/64, error -71
Sep 15 18:41:52 becconmobil kernel: [ 2056.873528] usb 3-1: new high speed USB device using ehci_hcd and address 17
Sep 15 18:41:52 becconmobil kernel: [ 2057.202565] usb 3-1: new high speed USB device using ehci_hcd and address 18
Sep 15 18:41:52 becconmobil kernel: [ 2057.534298] usb 3-1: new high speed USB device using ehci_hcd and address 19
Sep 15 18:41:53 becconmobil kernel: [ 2057.866052] usb 3-1: new high speed USB device using ehci_hcd and address 20
Sep 15 18:41:53 becconmobil kernel: [ 2058.197844] usb 3-1: new high speed USB device using ehci_hcd and address 21
Sep 15 18:41:53 becconmobil kernel: [ 2058.531277] usb 3-1: new high speed USB device using ehci_hcd and address 22
Sep 15 18:41:54 becconmobil kernel: [ 2058.860022] usb 3-1: new high speed USB device using ehci_hcd and address 23
... and so on ..
Sep 15 18:42:09 becconmobil kernel: [ 2071.613275] usb 3-1: new high speed USB device using ehci_hcd and address 69
Sep 15 18:42:09 becconmobil kernel: [ 2071.845961] usb 3-1: new high speed USB device using ehci_hcd and address 70
Sep 15 18:42:09 becconmobil kernel: [ 2071.957828] usb 3-1: device descriptor read/64, error -71
Sep 15 18:42:10 becconmobil kernel: [ 2072.252141] usb 3-1: new high speed USB device using ehci_hcd and address 71
Sep 15 18:42:10 becconmobil kernel: [ 2072.483853] usb 3-1: new high speed USB device using ehci_hcd and address 72
... and so on ..
Sep 15 18:42:16 becconmobil kernel: [ 2077.036899] usb 3-1: new high speed USB device using ehci_hcd and address 91
Sep 15 18:42:17 becconmobil kernel: [ 2077.368349] usb 3-1: new high speed USB device using ehci_hcd and address 92
Sep 15 18:42:17 becconmobil kernel: [ 2077.427515] ehci_hcd 0000:00:1a.7: port 1 reset error -110
Sep 15 18:42:17 becconmobil kernel: [ 2077.427530] hub 3-0:1.0: hub_port_status failed (err = -32)


The webcam worked - at least in Kopete in previous Ubuntu versions. It had format problems - but from the USB side it was fine. 

Conrad