Bug#629149: ekiga: Error while accessing video device UVC Camera (17ef:480c)

Fri Jun 3 22:19:58 UTC 2011

Package: ekiga
Version: 3.2.7-2+b1
Severity: important

When starting Ekiga, I get the error in the subject line, followed by
"Could not open the chosen channel." There is no local video image.

This is on a Thinkpad X200T, using the built-in webcam.

I've tried changing the channel in the video configuration, selecting
Detect Devices, and all of the different options presented for
devices. None work.

The camera works fine in every other application I have tried,
including Cheese and v4l2ucp. 

It has worked with Ekiga in the past, but it has been at least a few
months since I used it last.

Happy to provide any other useful info.

Here is a brief excerpt from strace, around parts that seems relevant.

lstat("/usr/lib/ptlib-2.6.7/devices/videoinput", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
open("/usr/lib/ptlib-2.6.7/devices/videoinput/", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 19
getdents(19, /* 4 entries */, 32768)    = 128
lstat("/usr/lib/ptlib-2.6.7/devices/videoinput/v4l_pwplugin.so", {st_mode=S_IFREG|0644, st_size=91544, ...}) = 0
open("/usr/lib/ptlib-2.6.7/devices/videoinput/", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 20
getdents(20, /* 4 entries */, 32768)    = 128
lstat("/usr/lib/ptlib-2.6.7/devices/videoinput/v4l_pwplugin.so", {st_mode=S_IFREG|0644, st_size=91544, ...}) = 0
open("/usr/lib/ptlib-2.6.7/devices/videoinput/v4l_pwplugin.so/", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = -1 ENOTDIR (Not a directory)
open("/usr/lib/ptlib-2.6.7/devices/videoinput/v4l_pwplugin.so", O_RDONLY) = 21
read(21, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p\253\0\0\0\0\0\0"..., 832) = 832
fstat(21, {st_mode=S_IFREG|0644, st_size=91544, ...}) = 0
mmap(NULL, 2186976, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 21, 0) = 0x7fb333a24000
mprotect(0x7fb333a39000, 2093056, PROT_NONE) = 0
mmap(0x7fb333c38000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 21, 0x14000) = 0x7fb333c38000
close(21)                               = 0
lstat("/usr/lib/ptlib-2.6.7/devices/videoinput/v4l2_pwplugin.so", {st_mode=S_IFREG|0644, st_size=94568, ...}) = 0
open("/usr/lib/ptlib-2.6.7/devices/videoinput/v4l2_pwplugin.so/", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = -1 ENOTDIR (Not a directory)
open("/usr/lib/ptlib-2.6.7/devices/videoinput/v4l2_pwplugin.so", O_RDONLY) = 21
read(21, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\254\0\0\0\0\0\0"..., 832) = 832
fstat(21, {st_mode=S_IFREG|0644, st_size=94568, ...}) = 0
mmap(NULL, 2189992, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 21, 0) = 0x7fb33380d000
mprotect(0x7fb333823000, 2093056, PROT_NONE) = 0
mmap(0x7fb333a22000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 21, 0x15000) = 0x7fb333a22000
close(21)                               = 0
open("/etc/ld.so.cache", O_RDONLY)      = 21

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.39-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages ekiga depends on:
ii  evoluti 2.32.3-1                         evolution database backend server
ii  gconf2  2.28.1-6                         GNOME configuration database syste
ii  libatk1 2.0.0-1                          The ATK accessibility toolkit
ii  libavah 0.6.30-3                         Avahi client library
ii  libavah 0.6.30-3                         Avahi common library
ii  libavah 0.6.30-3                         Avahi glib integration library
ii  libc6   2.13-4                           Embedded GNU C Library: Shared lib
ii  libdbus 0.94-1                           simple interprocess messaging syst
ii  libeboo 2.32.3-1                         Client library for evolution addre
ii  libedat 2.32.3-1                         Utility library for evolution data
ii  libgcc1 1:4.6.0-10                       GCC support library
ii  libgcon 2.28.1-6                         GNOME configuration database syste
ii  libglib 2.28.6-1                         The GLib library of C routines
ii  libgtk2 2.24.4-3                         The GTK+ graphical user interface 
ii  libldap 2.4.25-1+b1                      OpenLDAP libraries
ii  libnoti 0.5.0-2                          sends desktop notifications to a n
ii  libopal 3.6.8~dfsg-2+b1                  Open Phone Abstraction Library - s
ii  libpang 1.28.3-6                         Layout and rendering of internatio
ii  libpt2. 2.6.7-1                          Portable Tools Library
ii  libsasl 2.1.24~rc1.dfsg1+cvs2011-05-23-2 Cyrus SASL - authentication abstra
ii  libsigc 2.2.9-1                          type-safe Signal Framework for C++
ii  libstdc 4.6.0-10                         The GNU Standard C++ Library v3
ii  libx11- 2:1.4.3-1                        X11 client-side library
ii  libxext 2:1.3.0-1                        X11 miscellaneous extension librar
ii  libxml2 2.7.8.dfsg-2+b1                  GNOME XML library
ii  libxv1  2:1.0.6-1                        X11 Video extension library

Versions of packages ekiga recommends:
ii  gvfs                          1.6.4-3    userspace virtual filesystem - ser
pn  yelp                          <none>     (no description available)

Versions of packages ekiga suggests:
pn  asterisk                      <none>     (no description available)
pn  gnugk                         <none>     (no description available)
pn  mediaproxy                    <none>     (no description available)
pn  rtpproxy                      <none>     (no description available)
pn  ser                           <none>     (no description available)
pn  siproxd                       <none>     (no description available)
pn  yate                          <none>     (no description available)

-- no debconf information