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忘不吝赐教！
ubuntu12.04-i386
cheese3.4.1
运行cheese后无画面，只有黑色框
终端运行cheese后出现如下提示:

(cheese:15250): Clutter-WARNING **: Whoever translated default:LTR did so wrongly.

(cheese:15250): Gtk-WARNING **: Attempting to add a widget with type GtkImage to a GtkToggleButton, but as a GtkBin subclass a GtkToggleButton can only contain one widget at a time; it already contains a widget of type GtkLabel

(cheese:15250): Gtk-WARNING **: Attempting to add a widget with type GtkImage to a GtkToggleButton, but as a GtkBin subclass a GtkToggleButton can only contain one widget at a time; it already contains a widget of type GtkLabel

(cheese:15250): Gtk-WARNING **: Attempting to add a widget with type GtkImage to a GtkToggleButton, but as a GtkBin subclass a GtkToggleButton can only contain one widget at a time; it already contains a widget of type GtkLabel

(cheese:15250): Gtk-WARNING **: Attempting to add a widget with type GtkImage to a GtkButton, but as a GtkBin subclass a GtkButton can only contain one widget at a time; it already contains a widget of type GtkLabel

(cheese:15250): Gtk-WARNING **: Attempting to add a widget with type GtkGrid to a GtkToggleButton, but as a GtkBin subclass a GtkToggleButton can only contain one widget at a time; it already contains a widget of type GtkLabel

(cheese:15250): Gtk-WARNING **: Attempting to add a widget with type GtkImage to a GtkButton, but as a GtkBin subclass a GtkButton can only contain one widget at a time; it already contains a widget of type GtkLabel
libv4l2: error setting pixformat: 设备或资源忙

** (cheese:15250): WARNING **: Device '/dev/video0' is busy


** (cheese:15250): WARNING **: Could not negotiate format

运行链接了clutter库的程序出现这个警告的解决办法
Clutter-WARNING **: Whoever translated default:LTR did so wrongly.

设置一个环境变量CLUTTER_TEXT_DIRECTION=ltr就可以了

mobilefzb 写了：运行链接了clutter库的程序出现这个警告的解决办法
Clutter-WARNING **: Whoever translated default:LTR did so wrongly.

设置一个环境变量CLUTTER_TEXT_DIRECTION=ltr就可以了

谢谢你，我试了一下，声明后，警告消失了，但是图像采集依然有问题，怀疑是解码或者是驱动的问题。另外我在14.04 用opencv2.4.9打开摄像头，出现相同的问题。总之，十分感谢。

我15.04也出现了同样的问题貌似是缓冲区的问题但不知道怎么设置 = =!另外OPENCV 也是控制台输出的信息是select timeout 楼主你解决了吗？