Ubuntu
cheese package

Webcam only shows Black Screen on Lucid

Asked by xylog

I am running Ubuntu Lucid 10.04 and I am unable to get my Logitech Quickcam Communicator Deluxe to work. It is recognized by the kernel as a UVC camera:

[ 4088.530176] usb 1-5: USB disconnect, address 6
[ 4091.048078] usb 1-5: new high speed USB device using ehci_hcd and address 7
[ 4091.296281] usb 1-5: configuration #1 chosen from 1 choice
[ 4091.296445] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0992)
[ 4091.327434] input: UVC Camera (046d:0992) as /devices/pci0000:00/0000:00:1d.7/usb1/1-5/1-5:1.0/input/input12

When I run Skype, cheese, gstreamer or guvcview the light turns on but I see nothing but a black screen. I have tried doing " LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so cheese" and "LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so cheese" with no change.

interestingly I also have a Microsoft Lifecam that works fine. The logitech cam works fine on other windows systems.

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marcus aurelius (adbiz) said : 		#1

how much light do you have?

i have the same cam but it takes a few secs for the picture to show up on cheese. that cam was made before cmos chips came out, so you need a lot of light.

btw, it only works on cheese for me but not with any other apps, despite it being listed as UVC.

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xylog (xylog) said : 		#2

I have plenty of light and I waited for several minutes for video to come up and it never changed from the black screen.

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marcus aurelius (adbiz) said : 		#3

I found this on the internet.

http://forums.logitech.com/t5/Webcams/QC-Communicate-Deluxe-USB-Unknown-Device/td-p/393789

it seems that the logitiech cam doesn't work with some usb ports. the person fixed it by installing a new usb port. drastic measure. i'd rather just return the cam and get another one. maybe you can just use your lifecam on ubuntu and the logitech on windoze.

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marcus aurelius (adbiz) said : 		#4

Before fiddling with the USB, i found this on a post here from last year. you might want to give it a try. i just trying it now.

https://help.ubuntu.com/community/Webcam

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