Raspberry Pi Forums

HI guys , i've installed motion on my pi but everytime i start it there is this problem , it seems that is a driver issue :

libv4l2: error turning on stream: Broken pipe
[1] Error starting stream VIDIOC_STREAMON: Broken pipe
[1] ioctl (VIDIOCGCAP): Inappropriate ioctl for device
libv4l2: warning v4l2 mmap buffers still mapped on close()

I find some workaround ma nothing solved the problem
i start motion with :
LD_PRELOAD=/usr/lib/arm-linux-gnueabihf/libv4l/v4l2convert.so /usr/bin/motion

lsusb output : Bus 001 Device 004: ID 093a:2468 Pixart Imaging, Inc. SoC PC-Camera

web error : unable to open video device with grey screen

Can you help me please!
thank u

Every time I run into that I just reboot and it fixes it. Not much of a solution, I know.