Re: [Bug 1708922] Re: uvcvideo module does not work with Dell XPS 12 webcam

[emk2203]

Ok, I will do that.

Reinhard Tartler  schrieb am Do., 12. Apr. 2018,
23:29:

> If you can, please file a separate bug for uvcvideo with a stacktrace. Then
> please link those bugs
>
> The easiest way is probably by using apport on the crash file, I guess.
>
> On Thu, Apr 12, 2018, 17:21 emk2203 <1708...@bugs.launchpad.net> wrote:
>
> > Original reporter here. I am willing to assist wherever I can, but I
> > reported chiefly because I cannot debug or investigate of my own.
> >
> > Regarding the cheese issue, the exact same issue arises when just using
> > uvcvideo, so it is definitely something passed on from the driver.
> >
> > 2018-04-12 15:52 GMT+02:00 Reinhard Tartler :
> >
> > > Looking at the stacktrace, this is coming from /usr/bin/cheese. Even
> > > with bad input from the driver (which seems like a valid issue to
> > > investigate and improve) - an error message is preferable to a SIGFPE
> as
> > > seen in the initial report.
> > >
> > > ** Also affects: linux via
> > >https://trac.ffmpeg.org/ticket/4795
> > >Importance: Unknown
> > >Status: Unknown
> > >
> > > ** No longer affects: linux
> > >
> > > ** Changed in: ffmpeg (Ubuntu)
> > >Importance: Undecided => Low
> > >
> > > ** Also affects: cheese (Ubuntu)
> > >Importance: Undecided
> > >Status: New
> > >
> > > ** Changed in: cheese (Ubuntu)
> > >Importance: Undecided => Medium
> > >
> > > ** Changed in: cheese (Ubuntu)
> > >Status: New => Confirmed
> > >
> > > --
> > > You received this bug notification because you are subscribed to the
> bug
> > > report.
> > > https://bugs.launchpad.net/bugs/1708922
> > >
> > > Title:
> > >   uvcvideo module does not work with Dell XPS 12 webcam
> > >
> > > To manage notifications about this bug go to:
> > > https://bugs.launchpad.net/ubuntu/+source/cheese/+bug/
> > > 1708922/+subscriptions
> > >
> >
> > --
> > You received this bug notification because you are a member of MOTU
> > Media Team, which is subscribed to ffmpeg in Ubuntu.
> > https://bugs.launchpad.net/bugs/1708922
> >
> > Title:
> >   uvcvideo module does not work with Dell XPS 12 webcam
> >
> > To manage notifications about this bug go to:
> >
> >
> https://bugs.launchpad.net/ubuntu/+source/cheese/+bug/1708922/+subscriptions
> >
> > Launchpad-Notification-Type: bug
> > Launchpad-Bug: distribution=ubuntu; sourcepackage=cheese; component=main;
> > status=Confirmed; importance=Medium; assignee=None;
> > Launchpad-Bug: distribution=ubuntu; sourcepackage=ffmpeg;
> > component=universe; status=Incomplete; importance=Low; assignee=None;
> > Launchpad-Bug: distribution=ubuntu; sourcepackage=linux; component=main;
> > status=Incomplete; importance=Medium; assignee=None;
> > Launchpad-Bug-Tags: amd64 apport-crash artful gstreamer-error
> > Launchpad-Bug-Information-Type: Public
> > Launchpad-Bug-Private: no
> > Launchpad-Bug-Security-Vulnerability: no
> > Launchpad-Bug-Commenters: apport emk2203 janitor jcowgill kaihengfeng
> > siretart ubuntu-kernel-bot
> > Launchpad-Bug-Reporter: emk2203 (emk2203)
> > Launchpad-Bug-Modifier: emk2203 (emk2203)
> > Launchpad-Message-Rationale: Subscriber (ffmpeg in Ubuntu) @motumedia
> > Launchpad-Message-For: motumedia
> >
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1708922
>
> Title:
>   uvcvideo module does not work with Dell XPS 12 webcam
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/cheese/+bug/1708922/+subscriptions
>

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Title:
  uvcvideo module does not work with Dell XPS 12 webcam

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Re: [Bug 1708922] Re: uvcvideo module does not work with Dell XPS 12 webcam

[Reinhard Tartler]

If you can, please file a separate bug for uvcvideo with a stacktrace. Then
please link those bugs

The easiest way is probably by using apport on the crash file, I guess.

On Thu, Apr 12, 2018, 17:21 emk2203 <1708...@bugs.launchpad.net> wrote:

> Original reporter here. I am willing to assist wherever I can, but I
> reported chiefly because I cannot debug or investigate of my own.
>
> Regarding the cheese issue, the exact same issue arises when just using
> uvcvideo, so it is definitely something passed on from the driver.
>
> 2018-04-12 15:52 GMT+02:00 Reinhard Tartler :
>
> > Looking at the stacktrace, this is coming from /usr/bin/cheese. Even
> > with bad input from the driver (which seems like a valid issue to
> > investigate and improve) - an error message is preferable to a SIGFPE as
> > seen in the initial report.
> >
> > ** Also affects: linux via
> >https://trac.ffmpeg.org/ticket/4795
> >Importance: Unknown
> >Status: Unknown
> >
> > ** No longer affects: linux
> >
> > ** Changed in: ffmpeg (Ubuntu)
> >Importance: Undecided => Low
> >
> > ** Also affects: cheese (Ubuntu)
> >Importance: Undecided
> >Status: New
> >
> > ** Changed in: cheese (Ubuntu)
> >Importance: Undecided => Medium
> >
> > ** Changed in: cheese (Ubuntu)
> >Status: New => Confirmed
> >
> > --
> > You received this bug notification because you are subscribed to the bug
> > report.
> > https://bugs.launchpad.net/bugs/1708922
> >
> > Title:
> >   uvcvideo module does not work with Dell XPS 12 webcam
> >
> > To manage notifications about this bug go to:
> > https://bugs.launchpad.net/ubuntu/+source/cheese/+bug/
> > 1708922/+subscriptions
> >
>
> --
> You received this bug notification because you are a member of MOTU
> Media Team, which is subscribed to ffmpeg in Ubuntu.
> https://bugs.launchpad.net/bugs/1708922
>
> Title:
>   uvcvideo module does not work with Dell XPS 12 webcam
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/cheese/+bug/1708922/+subscriptions
>
> Launchpad-Notification-Type: bug
> Launchpad-Bug: distribution=ubuntu; sourcepackage=cheese; component=main;
> status=Confirmed; importance=Medium; assignee=None;
> Launchpad-Bug: distribution=ubuntu; sourcepackage=ffmpeg;
> component=universe; status=Incomplete; importance=Low; assignee=None;
> Launchpad-Bug: distribution=ubuntu; sourcepackage=linux; component=main;
> status=Incomplete; importance=Medium; assignee=None;
> Launchpad-Bug-Tags: amd64 apport-crash artful gstreamer-error
> Launchpad-Bug-Information-Type: Public
> Launchpad-Bug-Private: no
> Launchpad-Bug-Security-Vulnerability: no
> Launchpad-Bug-Commenters: apport emk2203 janitor jcowgill kaihengfeng
> siretart ubuntu-kernel-bot
> Launchpad-Bug-Reporter: emk2203 (emk2203)
> Launchpad-Bug-Modifier: emk2203 (emk2203)
> Launchpad-Message-Rationale: Subscriber (ffmpeg in Ubuntu) @motumedia
> Launchpad-Message-For: motumedia
>

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Title:
  uvcvideo module does not work with Dell XPS 12 webcam

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Re: [Bug 1708922] Re: uvcvideo module does not work with Dell XPS 12 webcam

[emk2203]

Original reporter here. I am willing to assist wherever I can, but I
reported chiefly because I cannot debug or investigate of my own.

Regarding the cheese issue, the exact same issue arises when just using
uvcvideo, so it is definitely something passed on from the driver.

2018-04-12 15:52 GMT+02:00 Reinhard Tartler :

> Looking at the stacktrace, this is coming from /usr/bin/cheese. Even
> with bad input from the driver (which seems like a valid issue to
> investigate and improve) - an error message is preferable to a SIGFPE as
> seen in the initial report.
>
> ** Also affects: linux via
>https://trac.ffmpeg.org/ticket/4795
>Importance: Unknown
>Status: Unknown
>
> ** No longer affects: linux
>
> ** Changed in: ffmpeg (Ubuntu)
>Importance: Undecided => Low
>
> ** Also affects: cheese (Ubuntu)
>Importance: Undecided
>Status: New
>
> ** Changed in: cheese (Ubuntu)
>Importance: Undecided => Medium
>
> ** Changed in: cheese (Ubuntu)
>Status: New => Confirmed
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1708922
>
> Title:
>   uvcvideo module does not work with Dell XPS 12 webcam
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/cheese/+bug/
> 1708922/+subscriptions
>

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Title:
  uvcvideo module does not work with Dell XPS 12 webcam

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Re: [Bug 1708922] Re: uvcvideo module does not work with Dell XPS 12 webcam

[emk2203]

Here is my output from ffmpeg -f alsa -i default -f v4l2 -s 640x480 -i
/dev/video0 -acodec flac -vcodec libx264 output.mkv
ffmpeg version 3.3.3-1ubuntu1 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 6.4.0 (Ubuntu 6.4.0-2ubuntu1) 20170724
  configuration: --prefix=/usr --extra-version=1ubuntu1
--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
--incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
--enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
--enable-libcdio --enable-libflite --enable-libfontconfig
--enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm
--enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt
--enable-libopus --enable-libpulse --enable-librubberband --enable-libshine
--enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh
--enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid
--enable-libzmq --enable-libzvbi --enable-omx --enable-openal
--enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883
--enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264
--enable-shared
  libavutil  55. 58.100 / 55. 58.100
  libavcodec 57. 89.100 / 57. 89.100
  libavformat57. 71.100 / 57. 71.100
  libavdevice57.  6.100 / 57.  6.100
  libavfilter 6. 82.100 /  6. 82.100
  libavresample   3.  5.  0 /  3.  5.  0
  libswscale  4.  6.100 /  4.  6.100
  libswresample   2.  7.100 /  2.  7.100
  libpostproc54.  5.100 / 54.  5.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, alsa, from 'default':
  Duration: N/A, start: 1502723857.171781, bitrate: 1536 kb/s
Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
[video4linux2,v4l2 @ 0x3ddca87320] Dequeued v4l2 buffer contains 32756
bytes, but 614400 were expected. Flags: 0x00012001.
Input #1, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, bitrate: 147456 kb/s
Stream #1:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480,
147456 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
Stream mapping:
  Stream #1:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  Stream #0:0 -> #0:1 (pcm_s16le (native) -> flac (native))
Press [q] to stop, [?] for help
[video4linux2,v4l2 @ 0x3ddca87320] Dequeued v4l2 buffer contains 32534
bytes, but 614400 were expected. Flags: 0x00012001.
/dev/video0: Invalid data found when processing input
[alsa @ 0x3ddca6a520] Thread message queue blocking; consider raising the
thread_queue_size option (current value: 8)
frame=0 fps=0.0 q=0.0 size=   0kB time=-577014:32:22.77 bitrate=
-0.0kbframe=0 fps=0.0 q=0.0 size=   0kB time=-577014:32:22.77
bitrate=  -0.0kbframe=0 fps=0.0 q=0.0 size=   0kB
time=-577014:32:22.77 bitrate=  -0.0kbframe=0 fps=0.0 q=0.0 size=
 0kB time=-577014:32:22.77 bitrate=  -0.0kbframe=0 fps=0.0 q=0.0 size=
 0kB time=-577014:32:22.77 bitrate=  -0.0kbframe=0 fps=0.0 q=0.0
size=   0kB time=-577014:32:22.77 bitrate=  -0.0kbframe=0 fps=0.0
q=0.0 size=   0kB time=-577014:32:22.77 bitrate=  -0.0kbframe=0
fps=0.0 q=0.0 size=   0kB time=-577014:32:22.77 bitrate=  -0.0kbframe=
  0 fps=0.0 q=0.0 size=   0kB time=-577014:32:22.77 bitrate=
-0.0kbframe=0 fps=0.0 q=0.0 size=   0kB time=-577014:32:22.77
bitrate=  -0.0kbframe=0 fps=0.0 q=0.0 size=   0kB
time=-577014:32:22.77 bitrate=  -0.0kbframe=0 fps=0.0 q=0.0 size=
 0kB time=-577014:32:22.77 bitrate=  -0.0kbframe=0 fps=0.0 q=0.0 size=
 0kB time=-577014:32:22.77 bitrate=  -0.0kbframe=0 fps=0.0 q=0.0
size=   0kB time=-577014:32:22.77 bitrate=  -0.0kbframe=0 fps=0.0
q=0.0 size=   0kB time=-577014:32:22.77 bitrate=  -0.0kbframe=0
fps=0.0 q=0.0 size=   0kB time=-577014:32:22.77 bitrate=  -0.0kbframe=
  0 fps=0.0 q=0.0 size=   0kB time=-577014:32:22.77 bitrate=
-0.0kbframe=0 fps=0.0 q=0.0 size=   0kB time=-577014:32:22.77
bitrate=  -0.0kbframe=0 fps=0.0 q=0.0 size=   0kB
time=-577014:32:22.77 bitrate=  -0.0kbframe=0 fps=0.0 q=0.0 size=
 0kB time=-577014:32:22.77 bitrate=  -0.0kbframe=0 fps=0.0 q=0.0 size=
 0kB time=-577014:32:22.77 bitrate=  -0.0kbframe=0 fps=0.0 q=0.0
size=   0kB time=-577014:32:22.77 bitrate=  -0.0kbToo many packets
buffered for output stream 0:1.
Conversion failed!


Kai-Heng Feng  schrieb am So., 13. Aug. 2017
um 17:25 Uhr:

> Okay, the error happens in avcodec_send_packet() or
> avcodec_receive_frame().
> Needs to find out what ffmpeg did here...
>
> ** Also affects: ffmpeg (Ubuntu)
>Importance: Undecided
>Status: New
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1708922
>
> Title:
>   uvcvideo module does not work with Dell XPS 12 webcam
>
> To manage notifications 

Re: [Bug 1708922] Re: uvcvideo module does not work with Dell XPS 12 webcam

[emk2203]

I researched the issue some time ago. My webcam and several others like HP
are affected by a faulty driver for this webcam, which should be the kernel
uvcvideo module. This is the reason why it happens in several progs, like
guvcview and cheese.

vlc does it's own thing and does not rely on the kernel driver. This is the
reason why it's unaffected.

Am 12.08.2017 3:31 PM schrieb "Kai-Heng Feng"
:

> Nothing suspicious. Why do you think it's a kernel bug?
>
> --
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> report.
> https://bugs.launchpad.net/bugs/1708922
>
> Title:
>   uvcvideo module does not work with Dell XPS 12 webcam
>
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> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/
> 1708922/+subscriptions
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Title:
  uvcvideo module does not work with Dell XPS 12 webcam

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Re: [Bug 1708922] Re: uvcvideo module does not work with Dell XPS 12 webcam

[emk2203]

Here it is:

2017-08-11 8:19 GMT+02:00 Kai-Heng Feng :

> Can you attach dmesg?
>
> ** Information type changed from Private to Public
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
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>
> Title:
>   uvcvideo module does not work with Dell XPS 12 webcam
>
> To manage notifications about this bug go to:
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> 1708922/+subscriptions
>


** Attachment added: "dmesg.log"
   https://bugs.launchpad.net/bugs/1708922/+attachment/4931188/+files/dmesg.log

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Title:
  uvcvideo module does not work with Dell XPS 12 webcam

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