[linux-uvc-devel] CentOS 6.6 Logitech C270

[Robert Moggach]

I'm having a difficult time finding any resources for troubleshooting
getting webcams working on CentOS.

I've tried ports front and back... There was a message to "report quirks"
so I arrived here.

Thanks for any help you can offer -

Here's some details:
http://superuser.com/questions/869060/webcam-problems-on-centos-6-6

Rob

[Moritz Barsnick]

Hi Robert,

I'm having a difficult time finding any resources for troubleshooting getting
webcams working on CentOS.

Unfortunately, you neither say what you attempted nor what the result
was. That makes assistance kind of difficult.

http://superuser.com/questions/869060/webcam-problems-on-centos-6-6

Feel free to include the info on this list, for the afterworld.

Anyway, that said:
- What your X server recognizes as a "keyboard" is presumably the
button on the webcam, to be used as an "input device".

Jan 24 15:38:11 machina kernel: uvcvideo: Found UVC 1.00 device <unnamed> (046d:0825)
Jan 24 15:38:11 machina kernel: input: UVC Camera (046d:0825) as /devices/pci0000:00/0000:00:1d.7/usb2/2-5/2-5:1.0/input/input28

I don't see any reports about it being aliased as /dev/videoX though,
which would be udev's task.

Have you tried using /devices/pci0000:00/0000:00:1d.7/usb2/2-5/2-5:1.0/input/input28
as your camera device for whatever software you are using? What are you
using - you didn't say, as I may remind you. ;-)

Cheers,
Moritz

[Paulo Assis]

Hi,
What do you mean by getting webcams working?

dmesg looks ok, uvcvideo detects the device just fine.

Have you tried any applications: guvcview, yavta, cheese, ...?

what's the output of these apps?

Regards,
Paulo

Post by Robert Moggach
I'm having a difficult time finding any resources for troubleshooting
getting webcams working on CentOS.
I've tried ports front and back... There was a message to "report quirks" so
I arrived here.
Thanks for any help you can offer -
http://superuser.com/questions/869060/webcam-problems-on-centos-6-6
Rob
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[Robert Moggach]

Device is connected but no video stream is working. I've tried all the
different combinations of resolutions and stream types.
It's generally yellow or nothing.

I updated the superuser.com post to show the output from cheese, camorama,
ucview - (yavta and guvcview are not part of centos 6)

The two errors that are common are:


libv4lconvert: warning more framesizes then I can handle! libv4l2: error
turning on stream: No space left on device

Let me know if there's anything else I can do to diagnose.

--
Robert Moggach
Sr. VFX Supervisor / Flame Artist
Los Angeles / New York / London / Toronto
http://moggach.com
https://www.linkedin.com/profile/view?id=1664843
Mobile [phone]

Post by Paulo Assis
Hi,
What do you mean by getting webcams working?
dmesg looks ok, uvcvideo detects the device just fine.
Have you tried any applications: guvcview, yavta, cheese, ...?
what's the output of these apps?
Regards,
Paulo

Post by Robert Moggach
I'm having a difficult time finding any resources for troubleshooting
getting webcams working on CentOS.
I've tried ports front and back... There was a message to "report

quirks" so

Post by Robert Moggach
I arrived here.
Thanks for any help you can offer -
http://superuser.com/questions/869060/webcam-problems-on-centos-6-6
Rob

------------------------------------------------------------------------------

Post by Robert Moggach
Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is

your

Post by Robert Moggach
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take

a

Post by Robert Moggach
look and join the conversation now. http://goparallel.sourceforge.net/
_______________________________________________
Linux-uvc-devel mailing list
https://lists.sourceforge.net/lists/listinfo/linux-uvc-devel

[Robert Moggach]

For the list - this is a known bug with EL6.6 reported in dec 2014 - I'm
running CentOS and the plus kernel has been patched to fix this - not
sure when it will be upstream. All my devices are working now.

January 26, 2015 at 3:07 AM
Hi,
What do you mean by getting webcams working?
dmesg looks ok, uvcvideo detects the device just fine.
Have you tried any applications: guvcview, yavta, cheese, ...?
what's the output of these apps?
Regards,
Paulo
January 26, 2015 at 1:29 AM
I'm having a difficult time finding any resources for troubleshooting
getting webcams working on CentOS.
I've tried ports front and back... There was a message to "report
quirks" so I arrived here.
Thanks for any help you can offer -
http://superuser.com/questions/869060/webcam-problems-on-centos-6-6
Rob