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Spack 07-17-2010 11:49 AM

Micromedia webcam
 
Hi all,

I've got a Dell Inspiron 1564 with an integrated webcam :

Quote:
Bus 001 Device 007: ID 0c45:641d Microdia

When I installed my Fedora 13, this webcam used to work very fine. But I
don't know what happened, now I can't get it to work anymore. When I
open cheese, the little webcam's light turns on and shutdown quickly.

My webcam uses the uvcvideo module but I can't see anything wrong in the
logs :

Quote:
Jul 11 00:10:00 draco kernel: usb 1-1.4: USB disconnect, address 7
Jul 11 00:10:00 draco kernel: usb 1-1.4: new high speed USB device using
ehci_hcd and address 8
Jul 11 00:10:00 draco kernel: usb 1-1.4: New USB device found,
idVendor=0c45, idProduct=641d
Jul 11 00:10:00 draco kernel: usb 1-1.4: New USB device strings: Mfr=2,
Product=1, SerialNumber=0
Jul 11 00:10:00 draco kernel: usb 1-1.4: Product:
Laptop_Integrated_Webcam_1.3M
Jul 11 00:10:00 draco kernel: usb 1-1.4: Manufacturer:
CN0FJT7K7248703O006Y
Jul 11 00:10:00 draco kernel: uvcvideo: Found UVC 1.00 device
Laptop_Integrated_Webcam_1.3M (0c45:641d)
Jul 11 00:10:00 draco kernel: input: Laptop_Integrated_Webcam_1.3M
as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/input/input15

Unless I launch cheese from the terminal in which I get the following
errors :

Quote:
$ cheese
libv4l2: error dequeuing buf: I/O error
libv4l2: error dequeuing buf: I/O error
libv4l2: error dequeuing buf: Invalid argument

So what happened to my webcam which used to work? Maybe an updated
package broke it but I can't tell which one would do that... :s

I tried to load the module with quirks mode or the trace option but none
worked.

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Spack 07-17-2010 09:17 PM

Micromedia webcam
 
No, it was a fresh Fedora 13 install.


Le samedi 17 juillet 2010 à 16:53 -0400, Michael Francis a écrit :
> hello, my question is were upgrading from 11, or 12, did you do a full
> upgrade or did you use live disc?
>
> On Sat, Jul 17, 2010 at 7:49 AM, Spack <spack.world@gmail.com> wrote:
> Hi all,
>
> I've got a Dell Inspiron 1564 with an integrated webcam :
>
> Quote:
> Bus 001 Device 007: ID 0c45:641d Microdia
>
> When I installed my Fedora 13, this webcam used to work very
> fine. But I
> don't know what happened, now I can't get it to work anymore.
> When I
> open cheese, the little webcam's light turns on and shutdown
> quickly.
>
> My webcam uses the uvcvideo module but I can't see anything
> wrong in the
> logs :
>
> Quote:
> Jul 11 00:10:00 draco kernel: usb 1-1.4: USB disconnect,
> address 7
> Jul 11 00:10:00 draco kernel: usb 1-1.4: new high speed USB
> device using
> ehci_hcd and address 8
> Jul 11 00:10:00 draco kernel: usb 1-1.4: New USB device found,
> idVendor=0c45, idProduct=641d
> Jul 11 00:10:00 draco kernel: usb 1-1.4: New USB device
> strings: Mfr=2,
> Product=1, SerialNumber=0
> Jul 11 00:10:00 draco kernel: usb 1-1.4: Product:
> Laptop_Integrated_Webcam_1.3M
> Jul 11 00:10:00 draco kernel: usb 1-1.4: Manufacturer:
> CN0FJT7K7248703O006Y
> Jul 11 00:10:00 draco kernel: uvcvideo: Found UVC 1.00 device
> Laptop_Integrated_Webcam_1.3M (0c45:641d)
> Jul 11 00:10:00 draco kernel: input:
> Laptop_Integrated_Webcam_1.3M
> as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/input/input15
>
> Unless I launch cheese from the terminal in which I get the
> following
> errors :
>
> Quote:
> $ cheese
> libv4l2: error dequeuing buf: I/O error
> libv4l2: error dequeuing buf: I/O error
> libv4l2: error dequeuing buf: Invalid argument
>
> So what happened to my webcam which used to work? Maybe an
> updated
> package broke it but I can't tell which one would do
> that... :s
>
> I tried to load the module with quirks mode or the trace
> option but none
> worked.
>
> _______________________________________________
> laptop mailing list
> laptop@lists.fedoraproject.org
> https://admin.fedoraproject.org/mailman/listinfo/laptop
>


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Jon Nettleton 07-17-2010 09:35 PM

Micromedia webcam
 
>>
>> * * * * Quote:
>> * * * * $ cheese
>> * * * * libv4l2: error dequeuing buf: I/O error
>> * * * * libv4l2: error dequeuing buf: I/O error
>> * * * * libv4l2: error dequeuing buf: Invalid argument
>>
>> * * * * So what happened to my webcam which used to work? Maybe an
>> * * * * updated
>> * * * * package broke it but I can't tell which one would do
>> * * * * that... :s
>>
>> * * * * I tried to load the module with quirks mode or the trace
>> * * * * option but none
>> * * * * worked.

Could you test one thing quick. Open a terminal and try launching
cheese with this command

LD_PRELOAD="/usr/lib/libv4l/v4l1compat.so" cheese

of course if you have a x86_64 install then you will use /usr/lib64/
in the path to the library.

If you don't have that file you will need to install the libv4l rpm via yum.

If that works report back and we can work on the next set of steps.

Jon
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Spack 07-17-2010 10:29 PM

Micromedia webcam
 
Le samedi 17 juillet 2010 à 14:35 -0700, Jon Nettleton a écrit :
> >>
> >> Quote:
> >> $ cheese
> >> libv4l2: error dequeuing buf: I/O error
> >> libv4l2: error dequeuing buf: I/O error
> >> libv4l2: error dequeuing buf: Invalid argument
> >>
> >> So what happened to my webcam which used to work? Maybe an
> >> updated
> >> package broke it but I can't tell which one would do
> >> that... :s
> >>
> >> I tried to load the module with quirks mode or the trace
> >> option but none
> >> worked.
>
> Could you test one thing quick. Open a terminal and try launching
> cheese with this command
>
> LD_PRELOAD="/usr/lib/libv4l/v4l1compat.so" cheese
>
> of course if you have a x86_64 install then you will use /usr/lib64/
> in the path to the library.
>
> If you don't have that file you will need to install the libv4l rpm via yum.
>
> If that works report back and we can work on the next set of steps.
>
> Jon

I already tried this but I got the same error messages. And yes, I've
got a x86_64.

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Ankur Sinha 07-18-2010 05:38 AM

Micromedia webcam
 
On Sun, 2010-07-18 at 00:29 +0200, Spack wrote:
> Le samedi 17 juillet 2010 à 14:35 -0700, Jon Nettleton a écrit :
> > >>
> > >> Quote:
> > >> $ cheese
> > >> libv4l2: error dequeuing buf: I/O error
> > >> libv4l2: error dequeuing buf: I/O error
> > >> libv4l2: error dequeuing buf: Invalid argument
> > >>
> > >> So what happened to my webcam which used to work? Maybe an
> > >> updated
> > >> package broke it but I can't tell which one would do
> > >> that... :s
> > >>
> > >> I tried to load the module with quirks mode or the trace
> > >> option but none
> > >> worked.
> >
> > Could you test one thing quick. Open a terminal and try launching
> > cheese with this command
> >
> > LD_PRELOAD="/usr/lib/libv4l/v4l1compat.so" cheese
> >
> > of course if you have a x86_64 install then you will use /usr/lib64/
> > in the path to the library.
> >
> > If you don't have that file you will need to install the libv4l rpm via yum.
> >
> > If that works report back and we can work on the next set of steps.
> >
> > Jon
>
> I already tried this but I got the same error messages. And yes, I've
> got a x86_64.
>

hi,

Maybe you should look at this page[1] and contact the person in-charge.
I had trouble with mine too. I had emailed him, and Hans replied with a
solution that works. Now the firmware for my webcam is at RPMFusion ;)

regards,
Ankur

[1]
> https://fedoraproject.org/wiki/Features/BetterWebcamSupport

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