Bug#537566: Video not displayed from monitor integrated webcam
merlin.iwv9z at ncf.ca
Sun Jul 19 12:48:50 UTC 2009
I have a Dell SP2008WFP monitor with integrated webcam which uses the
uvcvideo driver. When cheese starts, the LED beside the webcam comes on
but no video is displayed. After about 10 seconds the test pattern is
displayed in cheese's window. Pictures and videos can be taken but only
the test pattern is saved. Starting cheese in verbose mode shows that
cheese is getting hung up at "Probing supported video formats..." and no
further output is displayed on stdout.
Things I have tried that didn't work...
1. manually unloading and reloading the uvcvideo module.
2. blacklisting uvcvideo and loading it manually after a reboot.
3. blacklisting uvcvideo and loading it via /etc/rc.local or /etc/modules
Workarounds that make cheese work...
1. After booting, switch the monitor off and on. According to the manual
for the monitor; "Switching your monitor OFF and then ON would
re-enumerate its USB interface".
2. Booting with the monitor turned off and then turning it on after boot
3. After booting, unplug and replug monitor's USB cable.
4. In the BIOS, change USB configuration to disable 'USB legacy'
setting. However, in this scenario the keyboard is not functional until
the Debian login screen is reached. I can't access the BIOS screen
again until I reset the BIOS from the motherboard.
Note: luvcvideo, mplayer and gstreamer all display video from this
webcam without any workarounds.
-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.26-2-686 (SMP w/1 CPU core)
Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages cheese depends on:
ii gconf2 2.26.2-1 GNOME configuration
ii gstreamer0.1 0.10.23-3 GStreamer plugins from the
ii gstreamer0.1 0.10.15-2 GStreamer plugins from the
ii gstreamer0.1 0.10.23-3 GStreamer plugins for X11
ii libart-2.0-2 2.3.20-2 Library of functions for 2D
ii libc6 2.9-12 GNU C Library: Shared libraries
ii libcairo2 1.8.6-2+b1 The Cairo 2D vector
ii libdbus-1-3 1.2.14-3 simple interprocess
ii libdbus-glib 0.80-4 simple interprocess
ii libebook1.2- 184.108.40.206-2 Client library for
ii libgconf2-4 2.26.2-1 GNOME configuration
ii libglib2.0-0 2.20.1-2 The GLib library of C routines
ii libgnomeui-0 2.24.1-1 The GNOME 2 libraries (User
ii libgnomevfs2 1:2.24.1-1 GNOME Virtual File System
ii libgstreamer 0.10.23-3 GStreamer libraries from
ii libgstreamer 0.10.23-2 Core GStreamer libraries
ii libgtk2.0-0 2.16.1-2 The GTK+ graphical user
ii libhal1 0.5.12~git20090406.46dc48-2 Hardware Abstraction Layer
ii libpango1.0- 1.24.0-3+b1 Layout and rendering of
ii librsvg2-2 2.26.0-1 SAX-based renderer library
Versions of packages cheese recommends:
ii gvfs 1.2.2-2 userspace virtual
filesystem - ser
cheese suggests no packages.
-- no debconf information
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