Public bug reported:
Sfter a fresh boot, I tried to test my webcam with mplayer:
$ mplayer -fps 15 -tv
driver=v4l:width=640:height=480:device=/dev/video0:input=0 tv://
MPlayer SVN-r29375-4.4.1 (C) 2000-2009 MPlayer Team
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing tv://.
TV file format detected.
Selected driver: v4l
name: Video 4 Linux input
author: Alex Beregszaszi
comment: under development
=================================================================
WARNING: YOU ARE USING V4L DEMUXER WITH V4L2 DRIVERS!!!
As the V4L1 compatibility layer is broken, this may not work.
If you encounter any problems, use driver=v4l2 instead.
Bugreports on driver=v4l with v4l2 drivers will be ignored.
=================================================================
Selected device: Logitech QuickCam Notebook Pro
Capabilites: capture
Device type: 1
Supported sizes: 160x120 => 640x480
Inputs: 1
0: Webcam: (tuner:0, norm:pal)
Using input 'Webcam'
tv.c: norm_from_string(pal): Bogus norm parameter, setting default.
Unknown norm!
Error: Cannot set norm!
Selected input hasn't got a tuner!
open: No such file or directory
[MGA] Couldn't open: /dev/mga_vid
open: No such file or directory
[MGA] Couldn't open: /dev/mga_vid
[VO_TDFXFB] Can't open /dev/fb0: No such file or directory.
[VO_3DFX] Unable to open /dev/3dfx.
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 640 x 480 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 640x480 => 640x480 Planar YV12
Selected video codec: [rawyv12] vfm: raw (RAW YV12)
==========================================================================
Audio: no sound
FPS forced to be 15.000 (ftime: 0.067).
Starting playback...
MPlayer interrupted by signal 2 in module: video_read_frame
MPlayer interrupted by signal 2 in module: video_read_frame
After interrupting, I unplugged the camera and got the message
(attached) in /var/log/messages.
Misc:
$ uname -a
Linux motoko 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:26 UTC 2009 i686
GNU/Linux
$ cat /proc/version_signature
Ubuntu 2.6.31-14.48-generic
ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be
restarted.
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 2/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ariel 1933 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfebfc000 irq 21'
Mixer name : 'SigmaTel STAC9205'
Components : 'HDA:838476a0,102801f1,00100204
HDA:14f12c06,14f1000f,00100000'
Controls : 23
Simple ctrls : 14
Date: Sun Oct 25 16:59:58 2009
DistroRelease: Ubuntu 9.10
Failure: oops
MachineType: Dell Inc. Inspiron 1520
NonfreeKernelModules: nvidia
Package: linux-image-2.6.31-14-generic 2.6.31-14.48
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-14-generic
root=UUID=5b5b11bd-e851-4a46-a4e1-42424d66a2b7 ro quiet splash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
linux-backports-modules-2.6.31-14-generic N/A
linux-firmware 1.24
SourcePackage: linux
Tags: kernel-oops
Title: WARNING: at /build/buildd/linux-2.6.31/lib/kobject.c:595
kobject_put+0x49/0x50()
Uname: Linux 2.6.31-14-generic i686
dmi.bios.date: 07/11/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A09
dmi.board.name: 0UW306
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA09:bd07/11/2008:svnDellInc.:pnInspiron1520:pvr:rvnDellInc.:rn0UW306:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Inspiron 1520
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-kerneloops i386 kernel-oops
--
WARNING: at kobject.c disconnecting USB webcam
https://bugs.launchpad.net/bugs/460690
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