Bug 907197

Summary:	No image in buit-in webcam (Lenovo EasyCamera on Lenovo IdeaPad U410) after upgrading to F18
Product:	[Fedora] Fedora	Reporter:	jg.macia
Component:	v4l-utils	Assignee:	Hans de Goede <hdegoede>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	18	CC:	abradshaw, extras-orphan, hdegoede, mchehab, mclasen, pbrobinson
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Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	Bug Fix
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Last Closed:	2013-02-18 22:46:00 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description jg.macia 2013-02-03 17:53:36 UTC

Description of problem:
After upgrading to F18, built-in camera (Lenovo EasyCamera on Lenovo IdeaPad U410) stopped rendering image in applications such as cheese or skype. The camera worked fine in F17.
The camera appears to be detected as it is mounted on "/dev/video0", and when running the aforementioned applications the LED light turns on, but only a black image appears on screen, and capturing of image fails to generate a file.
When using the webcam in other applications such as xawtv or gTalk, real time image appears but with lag and horizontal stripes.
Both cheese and Skype work perfectly when using an usb Logitech webcam in the same computer, showing a clear image.

Version-Release number of selected component (if applicable):
3.6.2

How reproducible:
Everytime cheese or Skype are used

Steps to Reproduce:
1. Turn on cheese or
2. turn on Skype
  
Actual results:
LED light of webcam turns on, but black image appears on screen and it is impossible to capture pictures

Expected results:
Image grom built-in camera appearing on screen

Additional info:
This problem seems the same that the one discussed without a solution at "http://forums.fedoraforum.org/showthread.php?t=288135"

Comment 1 Ade Bradshaw 2013-02-06 13:00:14 UTC

I know of two additional people who have this

#1 uses an IdeaPad U310 - they upgraded from F17 (where the camera worked) to F18 where it doesnt

#2 uses a lenovo z580 - clean install, camera doesnt work

In both cases the green led comes on but no image is displayed

Comment 2 Ade Bradshaw 2013-02-06 13:36:58 UTC

on the z580 we tried 

gst-launch-0.10 'v4l2src ! ffmpegcolorspace ! ximagesink'

This turned on the green LED but nothing else, no window with video in.

Comment 3 Peter Robinson 2013-02-06 13:47:20 UTC

Looks like a problem lower down the stack then, maybe driver level (what kernel(s) are you running?) or possibly libv4l.

Comment 4 Hans de Goede 2013-02-06 14:21:28 UTC

libv4l is part of v4l-utils nowadays, fixing component. Note I believe this likely is a gstreamer issue, most likely: https://bugzilla.gnome.org/show_bug.cgi?id=677516 but then in gstreamer-1.0.

Might be worthwhile to do a scratch build of gstreamer1-plugins-good with:
http://pkgs.fedoraproject.org/cgit/gstreamer-plugins-good.git/tree/0003-v4l2src-fix.patch

Ported to it. Anyways leaving this with v4l-utils as component for now, since then it will get assigned to me, so it stays on my radar. I likely won't have time to look into this for the next couple of weeks though.

Comment 5 jg.macia 2013-02-17 18:37:52 UTC

Problem solved after updating to kernel 3.7.7-201

Comment 6 Ade Bradshaw 2013-02-18 07:37:05 UTC

I can confirm, its fixed here (on the lenovo z580)

Thanks so much

Comment 7 Hans de Goede 2013-02-18 22:46:00 UTC

Closing per comment #5 and comment #6.