RE: cheese-3.10.2 does not detect webcam but guvcview does

[John Frankish <j-frankish slb com>]

> > > > > > -----Original Message-----
> > > > > > From: Bastien Nocera [mailto:hadess hadess net]
> > > > > > Sent: Monday, 26 May, 2014 14:15
> > > > > > To: John Frankish
> > > > > > Cc: cheese-list gnome org
> > > > > > Subject: Re: cheese-3.10.2 does not detect webcam but guvcview
> > > > > > does
> > > > > >
> > > > > > On Sat, 2014-05-24 at 15:07 +0000, John Frankish wrote:
> > > > > > > #6  0x000000000040f0d3 in cheese_effects_manager_add_effect
> > > > > > > (effect=<optimized out>, name=<optimized out>, self=0x1ed5610)
> > > > > > >     at src/cheese-effects-manager.c:222
> > > > > >
> > > > > > Still missing important debug information I'm afraid.
> > > > > 'seems the trick is to compile with "-ggdb"
> > > > It's trying to build the Time delay effect which needs the
> > > > "frei0r-filter- delay0r" plugin (which lives in the
> > > > gst-plugins-bad package). Cheese should probably do better at avoiding crashing when an effect isn't 
> > > > available.
> > > >
> > > > Could you please re-test with cheese 3.12.x, and file a bug if the
> > > > problem persists?
> > > Thanks
> > >
> > > Hmm - assuming we're referring to /usr/local/lib/gstreamer-
> > 1.0/libgstfrei0r.so, it is present and correct...
> >
> > Are you sure that your GStreamer installation knows to go get the
> > plugin there?

Some progress being made at last

I don't see it written anywhere, but the gstreamer frei0r plugin requires frei0r-plugins in order to work.

Unfortunately, cheese (now using cheese-3.12.2) still chokes:

$ G_DEBUG=fatal_warnings gdb --args cheese --device=/dev/video0

** Message: cheese-application.vala:215: Error during camera setup: No device found

(cheese:32042): cheese-CRITICAL **: cheese_camera_device_get_device_node: assertion 'CHEESE_IS_CAMERA_DEVICE 
(device)' failed

Program received signal SIGTRAP, Trace/breakpoint trap.
0x00007fffecf8c4ca in g_logv () from /usr/local/lib/libglib-2.0.so.0
(gdb) bt
#0  0x00007fffecf8c4ca in g_logv () from /usr/local/lib/libglib-2.0.so.0
#1  0x00007fffecf8c59d in g_log () from /usr/local/lib/libglib-2.0.so.0
#2  0x00007ffff7bd69c2 in cheese_camera_device_get_device_node (device=0x0) at 
libcheese/cheese-camera-device.c:930
#3  0x000000000041eb9c in cheese_preferences_dialog_initialize_camera_devices (self=0x1f9e390) at 
src/cheese-preferences.c:261
#4  0x000000000041e797 in cheese_preferences_dialog_construct (object_type=33132832, camera=0x662a30) at 
src/cheese-preferences.c:178
#5  0x000000000041e7f4 in cheese_preferences_dialog_new (camera=0x662a30) at src/cheese-preferences.c:187
#6  0x0000000000421fc0 in cheese_application_common_init.2720 (self=0x6621a0) at src/cheese-application.c:362
#7  0x000000000042219e in cheese_application_real_activate.2686 (base=0x6621a0) at 
src/cheese-application.c:394
#8  0x00007fffed4274c7 in g_signal_emit_valist () from /usr/local/lib/libgobject-2.0.so.0
#9  0x00007fffed4392ee in g_signal_emit () from /usr/local/lib/libgobject-2.0.so.0
#10 0x0000000000422381 in cheese_application_real_command_line.2689 (base=0x6621a0, cl=0x67ae20) at 
src/cheese-application.c:442
#11 0x00007fffed20ccdc in ffi_call_unix64 () from /usr/local/lib/libffi.so.6
#12 0x00007fffed20c970 in ffi_call () from /usr/local/lib/libffi.so.6
#13 0x00007fffed42482a in g_cclosure_marshal_generic_va () from /usr/local/lib/libgobject-2.0.so.0
#14 0x00007fffed4274c7 in g_signal_emit_valist () from /usr/local/lib/libgobject-2.0.so.0
#15 0x00007fffed4392ee in g_signal_emit () from /usr/local/lib/libgobject-2.0.so.0
#16 0x00007fffee3682d6 in ?? () from /usr/local/lib/libgio-2.0.so.0
#17 0x00007fffee2c8c9e in ?? () from /usr/local/lib/libgio-2.0.so.0
#18 0x00007fffee2ced19 in g_application_run () from /usr/local/lib/libgio-2.0.so.0
#19 0x000000000040ed5e in _vala_main (args=0x7fffffffeaf8, args_length1=2) at src/cheese-main.c:68
#20 0x000000000040edad in main (argc=2, argv=0x7fffffffeaf8) at src/cheese-main.c:83

$ ls -l /dev/vid*
crw-rw----    1 root     staff      81,   0 May 27 18:16 /dev/video0