On 12/21/14 22:08, Alexander Kapshuk wrote:
grep '^CONFIG.*V4L' /usr/src/linux/.config
CONFIG_VIDEO_V4L2=m
CONFIG_V4L_PLATFORM_DRIVERS=y
CONFIG_MEDIA_SUPPORT=m
CONFIG_USB_VIDEO_CLASS=m
CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV=y
CONFIG_USB_GSPCA=m
CONFIG_MEDIA_PCI_SUPPORT=y
grep -s ^LD_PRELOAD .*
.bash_profile:LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so
Also, you may want to try plugging you webcam into a USB2 port, if
available, instead of a USB3 one, as suggested here,
[6]http://linux-kernel.2935.n7.nabble.com/3-15-8-USB-issue-with-uvc-cam
-td920378.html.
Hope this helps.
When I try to run: guvcview
I get:
guvcview 1.6.1
ALSA lib
/var/tmp/portage/media-libs/alsa-lib-1.0.28/work/alsa-lib-1.0.28/src/pcm/pcm.c:2239:(snd_pcm_open_noupdate)
Unknown PCM cards.pcm.rear
ALSA lib
/var/tmp/portage/media-libs/alsa-lib-1.0.28/work/alsa-lib-1.0.28/src/pcm/pcm.c:2239:(snd_pcm_open_noupdate)
Unknown PCM cards.pcm.center_lfe
ALSA lib
/var/tmp/portage/media-libs/alsa-lib-1.0.28/work/alsa-lib-1.0.28/src/pcm/pcm.c:2239:(snd_pcm_open_noupdate)
Unknown PCM cards.pcm.side
ALSA lib
/var/tmp/portage/media-libs/alsa-lib-1.0.28/work/alsa-lib-1.0.28/src/pcm/pcm_route.c:947:(find_matching_chmap)
Found no matching channel map
video device: /dev/video0
ERROR opening V4L2 interface for /dev/video0
unable to detect video devices on your system (0)
ERROR opening V4L interface: Permission denied
Init video returned -1
VIDIOC_REQBUFS - Failed to delete buffers: Inappropriate ioctl for device
(errno 25)
cleaned allocations - 100%
Closing portaudio ...OK
--
Joseph
