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Old 07-11-2012, 06:08 PM
Martin-Éric Racine
 
Default Bug#677533: video: USB webcam fails since kernel 3.2

2012/7/11 Jean-Francois Moine <moinejf@free.fr>:
> On Wed, 11 Jul 2012 16:43:47 +0300
> Martin-Éric Racine <martin-eric.racine@iki.fi> wrote:
>
>> > Jean-Francois, can you perhaps make a patch against my latest tree for
>> > the poXXXX / PO3130 changes in your tarbal?
>>
>> Noted. Hopefully, the Debian kernel team can contribute to the
>> backporting part, since it's needed for the upcoming stable release.
>
> I had many problems with the vc032x driver, and the source code is very
> different from the code in the official kernels.
>
> As I have no webcam, Martin-Éric, may I ask you to test the backport
> I will do? It will be done only in the vc032x driver, so you could keep
> the working gspca_vc032x.ko file you have and restore it between the
> tests. I still lack the sensor type of your webcam. May you send me the
> result of:
>
> dmesg | fgrep gspca

[ 11.834852] gspca_main: v2.15.18 registered
[ 11.844262] gspca_main: vc032x-2.15.18 probing 0ac8:0321
[ 11.844682] gspca_vc032x: vc0321 check sensor header 2c
[ 11.850304] gspca_vc032x: Sensor ID 3130 (0)
[ 11.850309] gspca_vc032x: Find Sensor PO3130NC
[ 11.851809] gspca_main: video0 created

Backport would be needed against 3.2.21 as this is what Debian will
(probably) release with.

Cheers!
Martin-Éric



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Old 10-10-2012, 05:53 AM
Martin-Éric Racine
 
Default Bug#677533: video: USB webcam fails since kernel 3.2

2012/10/10 Jonathan Nieder <jrnieder@gmail.com>:
> Hi,
>
> In June, Martin-Éric Racine wrote:
>
>> Since recent kernels, this ASUS W5F's built-in webcam fails to be
>> detected. Gstreamer-based applications (Cheese,
>> gstreamer-properties) immediately crash whenever trying to access
>> the video device.
> [...]
>> video_source:sr[3246]: segfault at 0 ip (null) sp ab36de1c error
>> 14 in cheese[8048000+21000]
>
> In July, Martin-Éric Racine wrote:
>
>> As far as I can tell, yes, the modules in Jean-François' tarball work
>> as-is to fix the problem.
> [...]
>> [ 11.834852] gspca_main: v2.15.18 registered
>> [ 11.844262] gspca_main: vc032x-2.15.18 probing 0ac8:0321
>> [ 11.844682] gspca_vc032x: vc0321 check sensor header 2c
>> [ 11.850304] gspca_vc032x: Sensor ID 3130 (0)
>> [ 11.850309] gspca_vc032x: Find Sensor PO3130NC
>> [ 11.851809] gspca_main: video0 created
>>
>> Backport would be needed against 3.2.21 as this is what Debian will
>> (probably) release with.
>
> Sorry to have lost track of this. Do you know what patch fixed it?
> Does 3.5.y from experimental work?

There is no known patch. What currently works is a whole new upstream
tarball of the GSPCA tree, built as a standalone module package. It's
not fixed in 3.5 however.

Martin-Éric


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Old 10-10-2012, 06:23 AM
Jean-Francois Moine
 
Default Bug#677533: video: USB webcam fails since kernel 3.2

On Tue, 9 Oct 2012 15:54:46 -0700
Jonathan Nieder <jrnieder@gmail.com> wrote:

> Hi,
>
> In June, Martin-Éric Racine wrote:
>
> > Since recent kernels, this ASUS W5F's built-in webcam fails to be
> > detected. Gstreamer-based applications (Cheese,
> > gstreamer-properties) immediately crash whenever trying to access
> > the video device.
> [...]
> > video_source:sr[3246]: segfault at 0 ip (null) sp ab36de1c error
> > 14 in cheese[8048000+21000]
>
> In July, Martin-Éric Racine wrote:
>
> > As far as I can tell, yes, the modules in Jean-François' tarball work
> > as-is to fix the problem.
> [...]
> > [ 11.834852] gspca_main: v2.15.18 registered
> > [ 11.844262] gspca_main: vc032x-2.15.18 probing 0ac8:0321
> > [ 11.844682] gspca_vc032x: vc0321 check sensor header 2c
> > [ 11.850304] gspca_vc032x: Sensor ID 3130 (0)
> > [ 11.850309] gspca_vc032x: Find Sensor PO3130NC
> > [ 11.851809] gspca_main: video0 created
> >
> > Backport would be needed against 3.2.21 as this is what Debian will
> > (probably) release with.
>
> Sorry to have lost track of this. Do you know what patch fixed it?
> Does 3.5.y from experimental work?
>
> Curious,
> Jonathan

Hi Jonathan,

I tried to prepare a patch set for the vc032x, but testing with
Martin-Éric stopped mid-july, so I have nothing to propose yet. I'm
waiting for some other vc0321+po3130nc owner and continue the tests...

--
Ken ar c'hentañ | ** Breizh ha Linux atav! **
Jef | http://moinejf.free.fr/


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Old 10-10-2012, 06:49 AM
Martin-Éric Racine
 
Default Bug#677533: video: USB webcam fails since kernel 3.2

2012/10/10 Jean-Francois Moine <moinejf@free.fr>:
> On Tue, 9 Oct 2012 15:54:46 -0700
> Jonathan Nieder <jrnieder@gmail.com> wrote:
>
>> Hi,
>>
>> In June, Martin-Éric Racine wrote:
>>
>> > Since recent kernels, this ASUS W5F's built-in webcam fails to be
>> > detected. Gstreamer-based applications (Cheese,
>> > gstreamer-properties) immediately crash whenever trying to access
>> > the video device.
>> [...]
>> > video_source:sr[3246]: segfault at 0 ip (null) sp ab36de1c error
>> > 14 in cheese[8048000+21000]
>>
>> In July, Martin-Éric Racine wrote:
>>
>> > As far as I can tell, yes, the modules in Jean-François' tarball work
>> > as-is to fix the problem.
>> [...]
>> > [ 11.834852] gspca_main: v2.15.18 registered
>> > [ 11.844262] gspca_main: vc032x-2.15.18 probing 0ac8:0321
>> > [ 11.844682] gspca_vc032x: vc0321 check sensor header 2c
>> > [ 11.850304] gspca_vc032x: Sensor ID 3130 (0)
>> > [ 11.850309] gspca_vc032x: Find Sensor PO3130NC
>> > [ 11.851809] gspca_main: video0 created
>> >
>> > Backport would be needed against 3.2.21 as this is what Debian will
>> > (probably) release with.
>>
>> Sorry to have lost track of this. Do you know what patch fixed it?
>> Does 3.5.y from experimental work?
>>
>> Curious,
>> Jonathan
>
> Hi Jonathan,
>
> I tried to prepare a patch set for the vc032x, but testing with
> Martin-Éric stopped mid-july, so I have nothing to propose yet. I'm
> waiting for some other vc0321+po3130nc owner and continue the tests...

We kept on going back and forth between two versions of the same file,
none of which produced the result expected by Jean-Francois. I'd
venture that the change that fixed it involves an entirely different
file, but he seemed to expect otherwise.

Martin-Éric


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Old 10-10-2012, 09:01 AM
Jean-Francois Moine
 
Default Bug#677533: video: USB webcam fails since kernel 3.2

On Tue, 9 Oct 2012 23:32:44 -0700
Jonathan Nieder <jrnieder@gmail.com> wrote:

> That's good to hear. Does that you mean you have a rough patchset
> available, even if it doesn't work perfectly yet?

Sorry again, it asked me some time to remember what occured in July.

In a first step, the previous patch has been tested (in two steps, I
did a mistake), and the webcam did not work.So, the bug was elsewhere.

As the webcam was working with the gspca test 2.15.18, and as only the
file vc032x was different from the kernel, I had two options:

- either continue to reduce the differences between the vc032x.c kernel
and gspca test until the webcam works,

- or directly try the vc032x.c of the gspca test into the kernel.
If the webcam would work (as it should), I would have gone back in
the patch set and know exactly where was the bug.

I asked Martin-Éric to try the second option, but he did not succeed to
create a working gspca_vc032x.ko module for his kernel, and then, he
did not want to try this again. He stopped here, so, I could not go
further.

I join the file, so, if you find somebody which is happy (or unhappy)
with it, the patch set could be created...

--
Ken ar c'hentañ | ** Breizh ha Linux atav! **
Jef | http://moinejf.free.fr/
 

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