# SANE_DEBUG_V4L=255 scanimage -L 2> v4l.log device `v4l:/dev/video1' is a Noname Logitech QuickCam USB virtual device device `v4l:/dev/video0' is a Noname Logitech QuickCam USB virtual device
# cat v4l.log [sanei_debug] Setting debug level of v4l to 255. [v4l] SANE v4l backend version 1.0 build 4 from sane-backends 1.0.15 [v4l] attach: trying to open /dev/bttv0 [v4l] attach: failed to open device `/dev/bttv0': No such file or directory [v4l] attach: trying to open /dev/video0 [v4l] attach: found videodev `Philips 740 webcam' on `/dev/video0' [v4l] attach: trying to open /dev/video1 [v4l] attach: found videodev `Logitech QuickCam USB' on `/dev/video1' [v4l] attach: trying to open /dev/video2 [v4l] attach: failed to open device `/dev/video2': No such file or directory [v4l] attach: trying to open /dev/video3 [v4l] attach: failed to open device `/dev/video3': No such file or directory [v4l] sane_get_devices [v4l] sane_exit: all devices freed funny in deed, the log seems o.k.
[sanei_debug] Setting debug level of v4l to 255. [v4l] SANE v4l backend version 1.0 build 4 from sane-backends 1.0.15 [v4l] attach: trying to open /dev/bttv0 [v4l] attach: failed to open device `/dev/bttv0': No such file or directory [v4l] attach: trying to open /dev/video0 [v4l] attach: found videodev `Philips 740 webcam' on `/dev/video0' [v4l] attach: trying to open /dev/video1 [v4l] attach: found videodev `Logitech QuickCam USB' on `/dev/video1' [v4l] attach: trying to open /dev/video2 [v4l] attach: failed to open device `/dev/video2': No such file or directory [v4l] attach: trying to open /dev/video3 [v4l] attach: failed to open device `/dev/video3': No such file or directory [v4l] sane_get_devices [v4l] sane_exit: all devices freed
