webcam (guvcview) does not work

[Israel]

On 04/21/2014 06:02 PM, farinet at arcor.de wrote:
> Only now i realised in 14.04 guvcview - at least for me is not working
> anymore. When i start it in a terminal, i'm getting the following -
> long! ;-) - errorlist:
>
> ---
> ~$ guvcview
> guvcview 1.7.1
> file guvcview_video.mkv has extension type 1
> file guvcview_image.jpg has extension type 0
> file guvcview_image.jpg has extension type 0
> Video file suffix detected: 0
> Image file suffix detected: 0
> ALSA lib pcm_dsnoop.c:618:(snd_pcm_dsnoop_open) unable to open slave
> ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave
> ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
> ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
> ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
> bt_audio_service_open: connect() failed: Verbindungsaufbau abgelehnt (111)
> bt_audio_service_open: connect() failed: Verbindungsaufbau abgelehnt (111)
> bt_audio_service_open: connect() failed: Verbindungsaufbau abgelehnt (111)
> bt_audio_service_open: connect() failed: Verbindungsaufbau abgelehnt (111)
> ALSA lib pcm_equal.c:196:(_snd_pcm_equal_open) No slave configuration
> for equal pcm
> ALSA lib pcm_equal.c:196:(_snd_pcm_equal_open) No slave configuration
> for equal pcm
> ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave
> Cannot connect to server socket err = Datei oder Verzeichnis nicht gefunden
> Cannot connect to server request channel
> jack server is not running or cannot be started
> video device: /dev/video0
> unable to detect video devices on your system (0)
> ERROR opening V4L interface: Datei oder Verzeichnis nicht gefunden
> Init video returned -1
> ---
>
> Any ideas in regard? In 13.10 i had no problem.
>
> I also installed (with '--no-install-recommends' - fear of big gnome
> dependencies) cheese. But it does not work either. There the errorlist
> looks like this:
>
> ---
> ** Message: cheese-application.vala:291: Error during camera setup: Kein
> Gerät gefunden
>
>
> (cheese:21060): cheese-CRITICAL **:
> cheese_camera_device_get_device_node: assertion 'CHEESE_IS_CAMERA_DEVICE
> (device)' failed
>
> (cheese:21060): GLib-CRITICAL **: g_variant_new_string: assertion
> 'string != NULL' failed
>
> (cheese:21060): GLib-GIO-CRITICAL **: g_settings_schema_key_type_check:
> assertion 'value != NULL' failed
>
> (cheese:21060): GLib-CRITICAL **: g_variant_get_type_string: assertion
> 'value != NULL' failed
>
> (cheese:21060): GLib-GIO-CRITICAL **: g_settings_set_value: key 'camera'
> in 'org.gnome.Cheese' expects type 's', but a GVariant of type '(null)'
> was given
>
> ** (cheese:21060): CRITICAL **:
> cheese_preferences_dialog_setup_resolutions_for_device: assertion
> 'device != NULL' failed
> ---
>
I had some issues early on with cheese after I installed something... I
think it was nvidia drivers.  You don't perchance have nvidia graphics
card, using proprietary drivers?
I am not able to read German (unfortunately), so I can't make out all of
your error messages, exactly.
Not sure what exactly to try yet...  maybe someone else knows more about
this specific issue.

-- 
Regards