gmane.linux.drivers.uvc.devel

3.1.5: uvcvideo: Failed to resubmit video URB(-27).

Justin Piszcz — 2012-01-03T14:21:02

Hello,

Using an Acer 7551-7442 here with the following built-in webcam:
Bus 002 Device 004: ID 0402:9665 ALi Corp. Gateway Webcam

It seems motion locks up every day or so and I see this in the kernel logs:
[378982.724053] uvcvideo: Failed to resubmit video URB (-27).
[378982.724066] uvcvideo: Failed to resubmit video URB (-27).
[378982.724079] uvcvideo: Failed to resubmit video URB (-27).
[378982.724090] uvcvideo: Failed to resubmit video URB (-27).
[378982.724101] uvcvideo: Failed to resubmit video URB (-27).
[489148.723367] uvcvideo: Failed to resubmit video URB (-27).
[489148.723379] uvcvideo: Failed to resubmit video URB (-27).
[489148.723391] uvcvideo: Failed to resubmit video URB (-27).
[489148.723403] uvcvideo: Failed to resubmit video URB (-27).
[489148.723414] uvcvideo: Failed to resubmit video URB (-27).

If I restart motion, it will usually start working again, I do not
have this problem on other (retail) Logitech webcams, was curious if
this a bug with the webcam (quirk?) or a problem in uvcvid

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Rick — 2011-12-31T16:34:09

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Re: [ANNOUNCE] Mailing list move to SourceForge

Laurent Pinchart — 2011-12-31T11:34:03

Hello everybody,

It looks like the Sourceforge administration team needs more than two weeks to 
handle a mass-subscription request :-S

As Berlios will close today, I have no choice but to ask you to manually 
subscribe to the new mailing list at 
https://lists.sourceforge.net/lists/listinfo/linux-uvc-devel.

I'm sorry for the inconvenience.

Re: What should I do if I want to add new control through the uvcdynctrl

Oleksij Rempel (Alexey Fisher — 2011-12-31T09:22:01

Hi,

it will be better to start with UVC documentation. You can download it here:
http://www.usb.org/developers/devclass_docs/USB_Video_Class_1_1_090711.zip

You will also find all answers in this doc.

On 31.12.2011 07:46, stream hu wrote:

What should I do if I want to add new controlthrough the uvcdynctrl

stream hu — 2011-12-31T06:46:56

Hi, all:

I'm a newer of Linux developer, and I'm interesting in the UVC EU because I
want to add my personal control for the camera(for example, zoom in/out,
which the camera supports).
what I have done is as follow:
(1) Get the GUID of the device;
(2) Modify the "usr/share/uvcdynctrl/data/
046d/logitech.xml", and replace the GUID with the new GUID, VID, PID;
(3) And I load the XML dynamically with the command "uvcdynctrl"

But it returns the error that: Unable to add control with GUID...

So I'm wondering that is there any examples about how to add new control
for the device?
If no, what's the meaning of tag "selector", "index","size", where is the
value comes from?

<control id="logitech_video_raw_bpp">
<entity>UVC_GUID_LOGITECH_VIDEO_PIPE</entity>
<selector>XU_RAW_DATA_BITS_PER_PIXEL</selector>
<index>7</index>
<size>1</size>

If there is an example about how to add the new control, I will very
appreciate for that!!
Thanks for your attention!
_______________________________________________
Linux-uvc-deve

Write driver logitech webcam

mehdi — 2011-12-29T12:14:01

Hi,
I would like to write a program to control zoom in and out of the webcam logitech c270.
Could you give me some (device) information. This is my first try.
Thanks,
Mehdi

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Re: Philips SPZ2000/00

Marco Madrigal — 2011-12-28T20:11:47

Hi,


Just a little comment to clarify a point maybe unknown:

Actually Skype for Linux (I am talking about Skype v2.2 Beta) does support MJPEG video ;)

"In the Linux client, you must either use YUV or MJPEG.  NV12 is not supported.  To use MJPEG with the Linux client an external library is required to convert the video data for Skype.
 
From the README file:
* If your camera capture is showing a green, scrambled or black image,
this workaround may help:
- Ubuntu 32 bit: install "libv4l-0" package and launch Skype with: 
LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so skype
- Ubuntu 64 bit: install "lib32v4l-0" package and launch Skype with: 
LD_PRELOAD=/usr/lib32/libv4l/v4l2convert.so skype
- Other distributions might have the same library, but may have a 
different path."

Best Regards,

Marco. 

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1 Am 27.11.2011 19:08, schrieb Michele:
you used mjpeg compressed stream for testing. how i said before, skype
on linux use only yuv-raw stream.
With the debug message

Re: libv4l2 error with 045e:00f8 cameras

Edwin Aponte — 2011-12-26T18:31:50

I am having this problem under openSUSE 11.4. I have tested the camera
with a Live-CD of openSUSE 12.1 RC2 and it works well. Then, I think is
pointless doing the long procedure to do the git-bisect, I don't have
time to do that. I prefer to use that time to upgrade my box to openSUSE
12.1.

I will leave this thing here, Anyway this problem is fixed in a newer
version of the kernel.

Thank you indeed for your help.
Edwin.

On Sun, 2011-11-13 at 12:29 +0100, Alexey Fisher wrote:

AVEO Technology Corp. 1871:0516

Thomas Jensen — 2011-12-23T06:49:08

Hello

I got a USB-microscope from Aldi supermarket. When I attach it to my
computer with Ubuntu 11.10, the following is written to syslog. After
that, there is the output from lsusb. I expect it will use the
uvcvideo-module, because other AVEO Technology Corp. microscope do, but
I don't know for sure. Please let me know if you need more info.

From syslog:

kernel: [ 1486.944217] usb 2-5: new high speed USB device number 4 using
ehci_hcd
udevd[307]: seq 1977 queued, 'add' 'usb'
udevd[307]: passed 257 bytes to netlink monitor 0x215c21f8
udevd[503]: seq 1977 running
udevd[503]: device 0x215c5078 has devpath
'/devices/pci0000:00/0000:00:1d.7/usb2/2-5'
udevd[503]: no db file to read /run/udev/data/c189:131: No such file or
directory
udevd[503]: PROGRAM 'mtp-probe
/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-5 2 4'
/lib/udev/rules.d/39-libmtp.rules:735
udevd[307]: seq 1978 queued, 'add' 'usb'
udevd[307]: seq 1979 queued, 'add' 'usb'
udevd[3755]: starting 'mtp-probe
/sys/devices/pci0000:00/0000:00:1d.7/usb2/2-5 2

information on Logitech Quickcam Pro 9000 forBusiness

Andrea Greggio — 2011-12-21T18:26:46

Hi; i've the necessity to use this webcam for videoconferencing because it
has  a wide-angle lens.
So in your list this is the problem 6 that says:


At least some versions of this camera severely overexpose images when the
manual exposure control is set to a value other than 2500 divided by an
exponent of 2. Auto-exposure isn't affected.

This webcam works well audio/video if the exposure is set automatically? it
is controlled by adobe flash plugins.

Thank's
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Hue HD resolution problems

Bill Wickstead — 2011-12-21T11:15:08

Hi,

I've got a Hue HD webcam (device ID 0c45:62f1) that I'd love to get
working fully under linux. UVC driver picks it up fine when plugged in,
but only allows up to 640x480 capture. This is in exactly as predicted
by the supported devices note (11), which says that "Those cameras claim
to have a true 1.3MP or 2MP CMOS sensor, but the highest resolution
reported by the UVC descriptors is 640x480".

Does anyone know if there is a way to persuade the driver to accept
higher resolution, slower capture from this device? My understanding is
that 640x480 resolution isn't intrinsic to all cameras on UVC driver. If
it's not possible, then that would be useful information too, but I'd
happily have a go at patching the driver if someone could point me in
the right direction.

The camera works at 1600x1200 (10fps) on Windows. lsusb.log below. dmesg.log is pretty long because of many "uvcvideo: Dropping payload (out of sync).", so just selected highlights below.

Thanks for any help you can offer,
Bill


--- dmesg.log

Re: Acer Aspire one A110L Linux Linpus Light; Webcam doesn't work.

Alexander Lam — 2011-12-19T17:40:58

Hello,

I also own an acer aspire one (the aoa150, but they have the same
motherboard and display assembly). I also know some other people with
the same laptop and they all have this issue. The webcam is actually
supported, but due to a design flaw in the internal USB cable in the
hinge connecting the motherboard and webcam, the webcam quits working
after a few years due to bending stress in the cable. You may notice
that booting your laptop in a different screens position makes the
webcam work.

so far the only solution I have found is to replace the webcam and the
display cables.

-Alex

Acer Aspire one A110L Linux Linpus Light;Webcam doesn't work.

Georg Singer — 2011-12-19T17:15:46

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Re: Webcam/mic device 046d:082b Logitec c170

Alexey Fisher — 2011-12-19T08:58:34

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Am 18.12.2011 22:51, schrieb Πιστιόλης Κώστας:

Hi,
thank you for the report. there is no need of more test. Most never
logitech cams just work.

- -- 
Regards,
Alexey
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[ANNOUNCE] Mailing list move to SourceForge

Laurent Pinchart — 2011-12-19T03:07:42

Hi everybody,

Berlios will unfortunately close on December the 31st. I have thus decided to 
move the linux-uvc-devel to SourceForge.

I've filed a support request with SourceForge to mass-subscribe the existing 
mailing list members to the new list, while retaining the digest option (other 
option may be lost, sorry for the inconvenience). You will likely receive an 
e-mail to inform you of your subscription to the new list in the near future.

You can already visit https://lists.sourceforge.net/lists/listinfo/linux-uvc-
devel for information about the new list. Please keep using the Berlios list 
for now. I will disable it after receiving the mass subscription confirmation, 
and ask SourceForge to import the list archives.

Re: [patch] add "report" file to debugfs

Alexey Fisher — 2011-12-18T22:59:47

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Am 18.12.2011 20:37, schrieb Laurent Pinchart:

Ok, i agree.
The i suggest to add two updates for FAQ.
1)
sudo echo 0xffff > /sys/module/uvcvideo/parameters/trace
and
sudo echo 0 > /sys/module/uvcvideo/parameters/trace

should be probably corrected to:
sudo sh -c "echo 0xffff > /sys/module/uvcvideo/parameters/trace"
sudo sh -c "echo 0 > /sys/module/uvcvideo/parameters/trace"

at least on ubuntu it is imposable to execute the previous version.

2) add in case of upside down webcam.
sudo dmidecode -t system -t baseboard


after some more time in this list i got some reasonable amount of
skepticism. so i can agree to remove many of my previous suggestions :D

Here i my current thoughts:
- - Looks like bandwidth keeps to be a major problem. Last month there
was cases with: lowspeed cam; high speed on low speed bus(?); advanced
cases with more then one cam using jpeg compression (usually buggy
cams)...
i also noticed that people (including me) wont to know video form

Webcam/mic device 046d:082b Logitec c170

Πιστιόλης Κώστας — 2011-12-18T21:51:00

Hello to the team,

I have just bought a new webcam with microphone 
  Logitec c170
  with IDs 046d:082b
which is not in the list of the page www.ideasonboard.org/uvc/#devices

It seems that both the camera and the microphone work, as I've managed
to use them with pidgin. Is there any other test that you want me to run
in order to confirm that it works ok in all aspects?
(like checking resolution(s) with some v4l program, or checking
suspending, etc.)
Do you want me to send you any usb dumps/logs or anything?

Con

Re: [faq] test cases

Alexey Fisher — 2011-12-18T22:16:05

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Hi,

Am 18.12.2011 21:08, schrieb Laurent Pinchart:

no problem, i already found that you prefer the batch answering. so
i'm not confused not to getting answer for some longer time :)


I'm still getting confusing about that, it seems to be definitely
misread. there is some attention problem i can't solve :)

Probably i should just ignore it.



- -- 
Regards,
Alexey
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Re: [faq] test cases

Laurent Pinchart — 2011-12-18T20:08:39

Hi Alexey,

On Wednesday 30 November 2011 16:16:13 Alexey Fisher wrote:

Thanks (sorry for the late reply again)


The purpose of the UVC class is already explained on the home page.


There's already a FAQ entry about troubleshooting devices that don't work. 
Instead of adding a second one, I've updated the existing one. Thanks for the 
ideas.

Re: [patch] add "report" file to debugfs

Laurent Pinchart — 2011-12-18T19:37:25

Hi Alexey,

Thanks for the patch, and sorry for the late reply.

On Monday 21 November 2011 15:51:47 Alexey Fisher wrote:

I got a couple of comments regarding both the purpose of the patch and its 
implementation. I'd like to discuss the purpose first.

My understanding is that this new debugfs entry is meant to help diagnosing 
and debugging issues. This is a nice thing, but most of the debugging 
information (such as the USB VID:PID and the DMI information) can already be 
obtained using lsusb and dmidecode. Duplicating in debugfs information that is 
already available through other means isn't something I'm very fond of. Sure, 
dmidecode needs to be run as root, but if the user can't figure that out I 
don't think getting him to moutn debugfs will be a great success either :-)

problem with audio/video Microsoft Lifecam studioHd

Andrea Greggio — 2011-12-18T14:52:29

I used your suggestion to put  quirks=80 but nothing change.

sudo rmmod uvcvideo && sudo modprobe uvcvideo quirks=0x80 jpeg_comp=1 6 
trace=0xffff

So when i settings in openmeetings video from lifecam and audio from Hda 
intel, the video works, but when i set audio and video from lifecam in 
syslog there is this error:

*uvcvideo: Failed to set UVC probe control : -32 (exp. 26).*

and the screen are black.

I've tested various resolution but the problem remains.

I don't know why the driver use YUV without MJPEG stream, the patch that 
i've used is correct?
Where i can set to use MJPEG stream? or it is the flash that send 
incorrect parameter?

In syslog there is this messages:

uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCAP)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_ENUM_FMT)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_G_FMT)
uvcvideo: uvc_v4l2_ioctl(VIDIOC_S_FMT)
uvcvideo: Trying format 0x56595559 (YUYV): 64