webcam (guvcview) does not work

farinet at arcor.de farinet at arcor.de
Mon Apr 21 23:02:07 UTC 2014


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
---



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