I'm not sure what went wrong, or what I did. But one day it suddenly wasn't working.
In Cheese Webcam Booth it shows a black screen. The little camera light next to the webcam isn't switched on.
In Edit -> Preferences-> Webcam in the Device dropdown it has "Acer Crystal Eye Webcam(/dev/video0)" but the dropdown is disabled and greyed out.
Im on Ubuntu 12.04.2, on an Acer Travelmate 5320
matthew@matthew-Travelmate5320:~$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 5986:0105 Acer, Inc
Bus 002 Device 002: ID 12d1:140c Huawei Technologies Co., Ltd.
Bus 007 Device 002: ID 04d9:0499 Holtek Semiconductor, Inc. Optical Mouse
matthew@matthew-Travelmate5320:/var/log$ grep webcam dmesg*
dmesg:[ 27.234010] uvcvideo: Found UVC 1.00 device Acer Crystal Eye webcam (5986:0105)
dmesg:[ 27.295492] input: Acer Crystal Eye webcam as /devices/pci0000:00/0000:00:1a.7/usb1/1-1/1-1:1.0/input/input5
dmesg.0:[ 27.132769] uvcvideo: Found UVC 1.00 device Acer Crystal Eye webcam (5986:0105)
dmesg.0:[ 27.243793] input: Acer Crystal Eye webcam as /devices/pci0000:00/0000:00:1a.7/usb1/1-1/1-1:1.0/input/input5
The webcam is working fine when I boot windows.
Any help would be much appreciated