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10toeOffline
Post subject: how to detect if it's a hardware or a software bug (webcam)?  PostPosted: 12.03.2011, 10:20



Joined: 2011-03-05
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Location: Kiel, Germany
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Hello!

Here I go quite pleased with my new notebook (ThinkPad Edge 13). I just don't get the integrated webcam to work.

There is always a (one color) gray screen, no motion. If it was a hardware defect I could send it back to the dealer. But I'm not sure: maybe a wrong driver?

What do you recommend to make sure?

      Code:
lsusb | grep Webcam
Bus 002 Device 003: ID 17ef:4815 Lenovo Integrated Webcam [R5U877]


Thanks!
10toe
 
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gerdOffline
Post subject: RE: how to detect if it  PostPosted: 12.03.2011, 10:40



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Have you tried other OSs? Maybe a preinstalled windows or linux live cds or dvds you know the webcam works with?
 
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10toeOffline
Post subject:   PostPosted: 12.03.2011, 11:33



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      Quote:
Have you tried other OSs?


Hi, nope, I bought the notebook without OS. Well, I have here an old Win XP licence.

Hmm... it would take the whole afternoon (and longer) to install XP, get the third party drivers, test the cam and afterwards restore aptosid...

Urk, isn't there any other way?
 
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gerdOffline
Post subject:   PostPosted: 12.03.2011, 11:39



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I would search for user tests with linux (ubuntu?) or other live distributions and see if you find one where the cam works out of the box. The try it yourself. No need to install something.
 
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slamOffline
Post subject:   PostPosted: 13.03.2011, 10:16
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There is NEVER a need to install another operating system to test for broken hardware, and specially Windows is absolutely unusable to clearly debug hardware problems.

The particular webcam is supported and working well with Aptosid.

Your problem is with the application you use to test the cam, a video driver, or faulty hardware.

Boot from the Aptosid live CD, and check the output from dmesg for web cam related lines. Use Kopete, Ekiga or Camorama to test the cam, and report again.

Greetings,
Chris

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10toeOffline
Post subject:   PostPosted: 14.03.2011, 16:35



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      Quote:
There is NEVER a need to install another operating system to test for broken hardware


Thanks a lot, slam, it's good to hear that! Here is the report:

      Code:
aptosid@aptosid:~$ dmesg | grep Cam
[    2.304680] usb 2-3: Product: Integrated Camera
[    9.572825] uvcvideo: Found UVC 1.00 device Integrated Camera (17ef:4815)
[    9.583506] input: Integrated Camera as /devices/pci0000:00/0000:00:13.2/usb2/2-3/2-3:1.0/input/input7


Seems to me the systems recognises the camera without error. However it sends just that gray screen with x frames per second. Diagnosis: no software fault?

PS: Before slam's post I made an experiment with XP via virtualbox (non-ose for usb support). Same gray screen.
 
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gerdOffline
Post subject:   PostPosted: 14.03.2011, 17:18



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Maybe it is disabled in bios settings?
And if not it is probably a hardware defect
 
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dptOffline
Post subject:   PostPosted: 16.03.2011, 18:58



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Try to run in guvcview or maybe cheese.
Or maybe the webcam is covered with some sticker.

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