Hi Brian,

> # tail -f /var/log/syslog > ~/debug.log

does not work with mine (it gets stuck in Terminal, or I did something
wrong...), so I have no "debug.log" file in Home. Anyway, here is the
output of dmesg that I think contains more info:

===================
[ 1473.041372] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FMT index=1,
type=1, flags=0, pixelformat=BA81, description='Bayer 8bit (BGGR)'
[ 1473.041378] sn9c20x: v4l_sn9c20x_ioctl 4A
[ 1473.041380] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FRAMESIZES
error -22
[ 1473.041384] sn9c20x: v4l_sn9c20x_ioctl 02
[ 1473.041386] sn9c20x: VIDIOC_ENUM_FMT 2
[ 1473.041388] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FMT error
-22
[ 1473.041454] sn9c20x: v4l_sn9c20x_ioctl 00
[ 1473.041456] sn9c20x: VIDIOC_QUERYCAP
[ 1473.041459] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCAP
driver=sn9c20x, card=SN9C20x USB 2.0 Webcam Driver, bus=usb-0000:00:1d.
7-4, version=0x00200904, capabilities=0x05000001
[ 1473.041497] sn9c20x: v4l_sn9c20x_ioctl 00
[ 1473.041499] sn9c20x: VIDIOC_QUERYCAP
[ 1473.041501] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCAP
driver=sn9c20x, card=SN9C20x USB 2.0 Webcam Driver, bus=usb-0000:00:1d.
7-4, version=0x00200904, capabilities=0x05000001
[ 1473.051818] sn9c20x: v4l_sn9c20x_ioctl 00
[ 1473.051823] sn9c20x: VIDIOC_QUERYCAP
[ 1473.051826] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCAP
driver=sn9c20x, card=SN9C20x USB 2.0 Webcam Driver, bus=usb-0000:00:1d.
7-4, version=0x00200904, capabilities=0x05000001
[ 1473.051836] sn9c20x: v4l_sn9c20x_ioctl 00
[ 1473.051838] sn9c20x: VIDIOC_QUERYCAP
[ 1473.051840] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCAP
driver=sn9c20x, card=SN9C20x USB 2.0 Webcam Driver, bus=usb-0000:00:1d.
7-4, version=0x00200904, capabilities=0x05000001
[ 1473.051847] sn9c20x: v4l_sn9c20x_ioctl 04
[ 1473.051850] SN9C20x USB 2.0 Webcam Driver: VIDIOC_G_FMT type=vid-
cap
[ 1473.051854] sn9c20x: GET FMT 1
[ 1473.051858] SN9C20x USB 2.0 Webcam Driver: width=640, height=480,
format=S920, field=interlaced, bytesperline=960 sizeimage=460800,
colorspace=8
[ 1473.051864] sn9c20x: v4l_sn9c20x_ioctl 02
[ 1473.051867] sn9c20x: VIDIOC_ENUM_FMT 0
[ 1473.051869] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FMT index=0,
type=1, flags=0, pixelformat=S920, description='SN9C20X I420 (YUV
4:2:0)'
[ 1473.051876] sn9c20x: v4l_sn9c20x_ioctl 4A
[ 1473.051878] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FRAMESIZES
error -22
[ 1473.051883] sn9c20x: v4l_sn9c20x_ioctl 02
[ 1473.051885] sn9c20x: VIDIOC_ENUM_FMT 1
[ 1473.051887] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FMT index=1,
type=1, flags=0, pixelformat=BA81, description='Bayer 8bit (BGGR)'
[ 1473.051893] sn9c20x: v4l_sn9c20x_ioctl 4A
[ 1473.051894] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FRAMESIZES
error -22
[ 1473.051899] sn9c20x: v4l_sn9c20x_ioctl 02
[ 1473.051901] sn9c20x: VIDIOC_ENUM_FMT 2
[ 1473.051903] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FMT error
-22
[ 1473.051944] sn9c20x: v4l_sn9c20x_ioctl 00
[ 1473.051947] sn9c20x: VIDIOC_QUERYCAP
[ 1473.051949] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCAP
driver=sn9c20x, card=SN9C20x USB 2.0 Webcam Driver, bus=usb-0000:00:1d.
7-4, version=0x00200904, capabilities=0x05000001
[ 1473.051958] sn9c20x: v4l_sn9c20x_ioctl 00
[ 1473.051960] sn9c20x: VIDIOC_QUERYCAP
[ 1473.051962] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCAP
driver=sn9c20x, card=SN9C20x USB 2.0 Webcam Driver, bus=usb-0000:00:1d.
7-4, version=0x00200904, capabilities=0x05000001
[ 1473.051969] sn9c20x: v4l_sn9c20x_ioctl 04
[ 1473.051971] SN9C20x USB 2.0 Webcam Driver: VIDIOC_G_FMT type=vid-
cap
[ 1473.051975] sn9c20x: GET FMT 1
[ 1473.051978] SN9C20x USB 2.0 Webcam Driver: width=640, height=480,
format=S920, field=interlaced, bytesperline=960 sizeimage=460800,
colorspace=8
[ 1473.051983] sn9c20x: v4l_sn9c20x_ioctl 02
[ 1473.051985] sn9c20x: VIDIOC_ENUM_FMT 0
[ 1473.051987] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FMT index=0,
type=1, flags=0, pixelformat=S920, description='SN9C20X I420 (YUV
4:2:0)'
[ 1473.051993] sn9c20x: v4l_sn9c20x_ioctl 4A
[ 1473.051995] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FRAMESIZES
error -22
[ 1473.052000] sn9c20x: v4l_sn9c20x_ioctl 02
[ 1473.052002] sn9c20x: VIDIOC_ENUM_FMT 1
[ 1473.052004] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FMT index=1,
type=1, flags=0, pixelformat=BA81, description='Bayer 8bit (BGGR)'
[ 1473.052010] sn9c20x: v4l_sn9c20x_ioctl 4A
[ 1473.052011] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FRAMESIZES
error -22
[ 1473.052016] sn9c20x: v4l_sn9c20x_ioctl 02
[ 1473.052018] sn9c20x: VIDIOC_ENUM_FMT 2
[ 1473.052020] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FMT error
-22
[ 1473.052045] sn9c20x: v4l_sn9c20x_ioctl 00
[ 1473.052047] sn9c20x: VIDIOC_QUERYCAP
[ 1473.052049] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCAP
driver=sn9c20x, card=SN9C20x USB 2.0 Webcam Driver, bus=usb-0000:00:1d.
7-4, version=0x00200904, capabilities=0x05000001
[ 1473.052061] sn9c20x: v4l_sn9c20x_ioctl 00
[ 1473.052063] sn9c20x: VIDIOC_QUERYCAP
[ 1473.052065] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCAP
driver=sn9c20x, card=SN9C20x USB 2.0 Webcam Driver, bus=usb-0000:00:1d.
7-4, version=0x00200904, capabilities=0x05000001
[ 1473.052074] sn9c20x: v4l_sn9c20x_ioctl 1A
[ 1473.052076] sn9c20x: VIDIOC_ENUMINPUT 0
[ 1473.052078] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUMINPUT
index=0, name=Webcam, type=2, audioset=0, tuner=0, std=00000000,
status=0
[ 1473.052131] sn9c20x: v4l_sn9c20x_ioctl 1A
[ 1473.052134] sn9c20x: VIDIOC_ENUMINPUT 1
[ 1473.052136] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUMINPUT error
-22
[ 1473.052141] sn9c20x: v4l_sn9c20x_ioctl 19
[ 1473.052144] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052147] sn9c20x: VIDIOC_QUERYCTRL id = 9963776
[ 1473.052149] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052151] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980900, type=1, name=Brightness, min/max=0/255, step=1,
default=127, flags=0x00000000
[ 1473.052183] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052186] sn9c20x: VIDIOC_QUERYCTRL id = 9963777
[ 1473.052188] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052190] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980901, type=1, name=Contrast, min/max=0/255, step=1,
default=127, flags=0x00000000
[ 1473.052201] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052203] sn9c20x: VIDIOC_QUERYCTRL id = 9963778
[ 1473.052205] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052207] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980902, type=1, name=Saturation, min/max=0/255, step=1,
default=127, flags=0x00000000
[ 1473.052216] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052219] sn9c20x: VIDIOC_QUERYCTRL id = 9963779
[ 1473.052221] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052223] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980903, type=1, name=Hue, min/max=-180/180, step=1, default=0,
flags=0x00000000
[ 1473.052232] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052234] sn9c20x: VIDIOC_QUERYCTRL id = 9963780
[ 1473.052236] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980904
[ 1473.052240] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052245] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052247] sn9c20x: VIDIOC_QUERYCTRL id = 9963781
[ 1473.052249] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980905
[ 1473.052253] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052257] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052259] sn9c20x: VIDIOC_QUERYCTRL id = 9963782
[ 1473.052261] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980906
[ 1473.052265] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052269] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052271] sn9c20x: VIDIOC_QUERYCTRL id = 9963783
[ 1473.052273] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980907
[ 1473.052277] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052281] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052283] sn9c20x: VIDIOC_QUERYCTRL id = 9963784
[ 1473.052285] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980908
[ 1473.052289] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052293] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052295] sn9c20x: VIDIOC_QUERYCTRL id = 9963785
[ 1473.052297] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980909
[ 1473.052301] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052305] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052307] sn9c20x: VIDIOC_QUERYCTRL id = 9963786
[ 1473.052309] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x98090a
[ 1473.052313] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052317] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052319] sn9c20x: VIDIOC_QUERYCTRL id = 9963787
[ 1473.052321] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x98090b
[ 1473.052325] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052329] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052332] sn9c20x: VIDIOC_QUERYCTRL id = 9963788
[ 1473.052334] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052335] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x98090c, type=2, name=Automatic whitbalance control, min/max=0/1,
step=1, default=1, flags=0x00000000
[ 1473.052345] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052347] sn9c20x: VIDIOC_QUERYCTRL id = 9963789
[ 1473.052350] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x98090d
[ 1473.052353] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052357] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052360] sn9c20x: VIDIOC_QUERYCTRL id = 9963790
[ 1473.052362] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052363] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x98090e, type=1, name=Red Balance, min/max=0/127, step=1,
default=31, flags=0x00000000
[ 1473.052373] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052375] sn9c20x: VIDIOC_QUERYCTRL id = 9963791
[ 1473.052377] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052379] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x98090f, type=1, name=Blue Balance, min/max=0/127, step=1,
default=31, flags=0x00000000
[ 1473.052389] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052391] sn9c20x: VIDIOC_QUERYCTRL id = 9963792
[ 1473.052393] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052395] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980910, type=1, name=Gamma, min/max=0/255, step=1, default=51,
flags=0x00000000
[ 1473.052404] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052406] sn9c20x: VIDIOC_QUERYCTRL id = 9963793
[ 1473.052408] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052410] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980911, type=1, name=Exposure, min/max=0/255, step=1, default=51,
flags=0x00000002
[ 1473.052420] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052422] sn9c20x: VIDIOC_QUERYCTRL id = 9963794
[ 1473.052424] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052426] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980912, type=2, name=Automatic gain control, min/max=0/1, step=1,
default=0, flags=0x00000000
[ 1473.052435] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052437] sn9c20x: VIDIOC_QUERYCTRL id = 9963795
[ 1473.052439] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052441] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980913, type=1, name=Gain, min/max=0/255, step=1, default=51,
flags=0x00000000
[ 1473.052450] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052453] sn9c20x: VIDIOC_QUERYCTRL id = 9963796
[ 1473.052454] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052456] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980914, type=2, name=Horizontal flip, min/max=0/1, step=1,
default=0, flags=0x00000000
[ 1473.052463] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052465] sn9c20x: VIDIOC_QUERYCTRL id = 9963797
[ 1473.052467] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052469] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980915, type=2, name=Vertical flip, min/max=0/1, step=1,
default=0, flags=0x00000000
[ 1473.052476] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052478] sn9c20x: VIDIOC_QUERYCTRL id = 9963798
[ 1473.052480] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980916
[ 1473.052484] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052488] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052490] sn9c20x: VIDIOC_QUERYCTRL id = 9963799
[ 1473.052492] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980917
[ 1473.052496] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052500] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052502] sn9c20x: VIDIOC_QUERYCTRL id = 9963800
[ 1473.052504] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980918
[ 1473.052508] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052512] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052514] sn9c20x: VIDIOC_QUERYCTRL id = 9963801
[ 1473.052516] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x980919
[ 1473.052520] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052524] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052526] sn9c20x: VIDIOC_QUERYCTRL id = 9963802
[ 1473.052528] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x98091a
[ 1473.052532] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052536] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052538] sn9c20x: VIDIOC_QUERYCTRL id = 9963803
[ 1473.052540] sn9c20x: VIDIOC_QUERYCTRL found
[ 1473.052542] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x98091b, type=1, name=Sharpness, min/max=0/63, step=1, default=31,
flags=0x00000000
[ 1473.052549] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052551] sn9c20x: VIDIOC_QUERYCTRL id = 9963804
[ 1473.052553] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x98091c
[ 1473.052557] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052561] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052563] sn9c20x: VIDIOC_QUERYCTRL id = 9963805
[ 1473.052565] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x98091d
[ 1473.052569] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052573] sn9c20x: v4l_sn9c20x_ioctl 24
[ 1473.052575] sn9c20x: VIDIOC_QUERYCTRL id = 9963806
[ 1473.052577] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL
id=0x98091e
[ 1473.052581] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYCTRL error
-22
[ 1473.052598] sn9c20x: v4l_sn9c20x_ioctl 17
[ 1473.052600] SN9C20x USB 2.0 Webcam Driver: VIDIOC_G_STD
std=0x00000000
[ 1473.052609] sn9c20x: v4l_sn9c20x_ioctl 26
[ 1473.052612] sn9c20x: GET INPUT 1699528136
[ 1473.052614] SN9C20x USB 2.0 Webcam Driver: VIDIOC_G_INPUT error -22
[ 1473.053239] sn9c20x: v4l_sn9c20x_ioctl 02
[ 1473.053243] sn9c20x: VIDIOC_ENUM_FMT 0
[ 1473.053246] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FMT index=0,
type=1, flags=0, pixelformat=S920, description='SN9C20X I420 (YUV
4:2:0)'
[ 1473.053256] sn9c20x: v4l_sn9c20x_ioctl 02
[ 1473.053259] sn9c20x: VIDIOC_ENUM_FMT 1
[ 1473.053262] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FMT index=1,
type=1, flags=0, pixelformat=BA81, description='Bayer 8bit (BGGR)'
[ 1473.053302] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053306] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053312] sn9c20x: TRY FMT 1
[ 1473.053317] SN9C20x USB 2.0 Webcam Driver: width=41057,
height=65535, format=S920, field=interlaced, bytesperline=61585
sizeimage=-258994321, colorspace=8
[ 1473.053322] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053325] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053331] sn9c20x: TRY FMT 1
[ 1473.053335] SN9C20x USB 2.0 Webcam Driver: width=41057,
height=65535, format=BA81, field=interlaced, bytesperline=41057
sizeimage=-1604296801, colorspace=8
[ 1473.053341] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053344] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053350] sn9c20x: TRY FMT 1
[ 1473.053354] SN9C20x USB 2.0 Webcam Driver: width=640, height=480,
format=S920, field=interlaced, bytesperline=960 sizeimage=460800,
colorspace=8
[ 1473.053359] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053362] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053368] sn9c20x: TRY FMT 1
[ 1473.053372] SN9C20x USB 2.0 Webcam Driver: width=640, height=480,
format=BA81, field=interlaced, bytesperline=640 sizeimage=307200,
colorspace=8
[ 1473.053394] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053397] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053403] sn9c20x: TRY FMT 1
[ 1473.053407] SN9C20x USB 2.0 Webcam Driver: width=41057,
height=65535, format=S920, field=interlaced, bytesperline=61585
sizeimage=-258994321, colorspace=8
[ 1473.053412] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053415] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053421] sn9c20x: TRY FMT 1
[ 1473.053425] SN9C20x USB 2.0 Webcam Driver: width=41057,
height=65535, format=BA81, field=interlaced, bytesperline=41057
sizeimage=-1604296801, colorspace=8
[ 1473.053431] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053434] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053439] sn9c20x: TRY FMT 1
[ 1473.053442] SN9C20x USB 2.0 Webcam Driver: width=640, height=480,
format=S920, field=interlaced, bytesperline=960 sizeimage=460800,
colorspace=8
[ 1473.053447] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053450] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053456] sn9c20x: TRY FMT 1
[ 1473.053460] SN9C20x USB 2.0 Webcam Driver: width=640, height=480,
format=BA81, field=interlaced, bytesperline=640 sizeimage=307200,
colorspace=8
[ 1473.053478] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053482] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053488] sn9c20x: TRY FMT 1
[ 1473.053492] SN9C20x USB 2.0 Webcam Driver: width=41057,
height=65535, format=S920, field=interlaced, bytesperline=61585
sizeimage=-258994321, colorspace=8
[ 1473.053497] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053500] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053505] sn9c20x: TRY FMT 1
[ 1473.053510] SN9C20x USB 2.0 Webcam Driver: width=41057,
height=65535, format=BA81, field=interlaced, bytesperline=41057
sizeimage=-1604296801, colorspace=8
[ 1473.053516] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053519] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053525] sn9c20x: TRY FMT 1
[ 1473.053529] SN9C20x USB 2.0 Webcam Driver: width=640, height=480,
format=S920, field=interlaced, bytesperline=960 sizeimage=460800,
colorspace=8
[ 1473.053534] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053537] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053542] sn9c20x: TRY FMT 1
[ 1473.053546] SN9C20x USB 2.0 Webcam Driver: width=640, height=480,
format=BA81, field=interlaced, bytesperline=640 sizeimage=307200,
colorspace=8
[ 1473.053564] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053567] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053573] sn9c20x: TRY FMT 1
[ 1473.053577] SN9C20x USB 2.0 Webcam Driver: width=41057,
height=65535, format=S920, field=interlaced, bytesperline=61585
sizeimage=-258994321, colorspace=8
[ 1473.053582] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053585] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053591] sn9c20x: TRY FMT 1
[ 1473.053596] SN9C20x USB 2.0 Webcam Driver: width=41057,
height=65535, format=BA81, field=interlaced, bytesperline=41057
sizeimage=-1604296801, colorspace=8
[ 1473.053601] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053605] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053610] sn9c20x: TRY FMT 1
[ 1473.053614] SN9C20x USB 2.0 Webcam Driver: width=640, height=480,
format=S920, field=interlaced, bytesperline=960 sizeimage=460800,
colorspace=8
[ 1473.053619] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053621] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053627] sn9c20x: TRY FMT 1
[ 1473.053631] SN9C20x USB 2.0 Webcam Driver: width=640, height=480,
format=BA81, field=interlaced, bytesperline=640 sizeimage=307200,
colorspace=8
[ 1473.053645] sn9c20x: v4l_sn9c20x_ioctl 4A
[ 1473.053648] SN9C20x USB 2.0 Webcam Driver: VIDIOC_ENUM_FRAMESIZES
error -22
[ 1473.053655] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053658] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053664] sn9c20x: TRY FMT 1
[ 1473.053668] SN9C20x USB 2.0 Webcam Driver: width=41057,
height=65535, format=BA81, field=interlaced, bytesperline=41057
sizeimage=-1604296801, colorspace=8
[ 1473.053674] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053676] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053682] sn9c20x: TRY FMT 1
[ 1473.053686] SN9C20x USB 2.0 Webcam Driver: width=640, height=480,
format=BA81, field=interlaced, bytesperline=640 sizeimage=307200,
colorspace=8
[ 1473.053949] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053952] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053958] sn9c20x: TRY FMT 1
[ 1473.053962] SN9C20x USB 2.0 Webcam Driver: width=640, height=480,
format=S920, field=interlaced, bytesperline=960 sizeimage=460800,
colorspace=8
[ 1473.053968] sn9c20x: v4l_sn9c20x_ioctl 40
[ 1473.053970] SN9C20x USB 2.0 Webcam Driver: VIDIOC_TRY_FMT type=vid-
cap
[ 1473.053976] sn9c20x: TRY FMT 1
[ 1473.053981] SN9C20x USB 2.0 Webcam Driver: width=640, height=480,
format=BA81, field=interlaced, bytesperline=640 sizeimage=307200,
colorspace=8
[ 1473.053987] sn9c20x: v4l_sn9c20x_ioctl 15
[ 1473.053990] SN9C20x USB 2.0 Webcam Driver: VIDIOC_G_PARM type=1
[ 1473.054002] sn9c20x: v4l_sn9c20x_ioctl 08
[ 1473.054007] sn9c20x: Freeing 0 v4l2 buffers
[ 1473.054110] sn9c20x: Buffers Allocated 2
[ 1473.054112] SN9C20x USB 2.0 Webcam Driver: VIDIOC_REQBUFS count=2,
type=vid-cap, memory=mmap
[ 1473.054145] sn9c20x: v4l_sn9c20x_ioctl 09
[ 1473.054149] sn9c20x: QUERY BUFFERS 0 2
[ 1473.054152] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYBUF
00:00:00.00000000 index=0, type=vid-cap, bytesused=0,
flags=0x00000000, field=1, sequence=0, memory=mmap, offset/
userptr=0x00000000, length=460800
[ 1473.054163] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00
type=0, flags=0x00000000, frames=0, userbits=0x00000000
[ 1473.054178] sn9c20x: v4l_sn9c20x_ioctl 09
[ 1473.054181] sn9c20x: QUERY BUFFERS 1 2
[ 1473.054185] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYBUF
00:00:00.00000000 index=1, type=vid-cap, bytesused=0,
flags=0x00000000, field=1, sequence=0, memory=mmap, offset/
userptr=0x00071000, length=460800
[ 1473.054195] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00
type=0, flags=0x00000000, frames=0, userbits=0x00000000
[ 1473.054201] sn9c20x: v4l_sn9c20x_ioctl 09
[ 1473.054204] sn9c20x: QUERY BUFFERS 0 2
[ 1473.054207] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYBUF
00:00:00.00000000 index=0, type=vid-cap, bytesused=0,
flags=0x00000000, field=1, sequence=0, memory=mmap, offset/
userptr=0x00000000, length=460800
[ 1473.054217] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00
type=0, flags=0x00000000, frames=0, userbits=0x00000000
[ 1473.054275] sn9c20x: v4l_sn9c20x_ioctl 09
[ 1473.054279] sn9c20x: QUERY BUFFERS 1 2
[ 1473.054282] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QUERYBUF
00:00:00.00000000 index=1, type=vid-cap, bytesused=0,
flags=0x00000000, field=1, sequence=0, memory=mmap, offset/
userptr=0x00071000, length=460800
[ 1473.054292] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00
type=0, flags=0x00000000, frames=0, userbits=0x00000000
[ 1473.054330] sn9c20x: v4l_sn9c20x_ioctl 0F
[ 1473.054333] sn9c20x: VIDIOC_QBUF
[ 1473.054336] sn9c20x: Queuing buffer 0.
[ 1473.054340] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF
00:00:00.00000000 index=0, type=vid-cap, bytesused=0,
flags=0x00000000, field=1, sequence=0, memory=mmap, offset/
userptr=0xabcdef00, length=16777216
[ 1473.054350] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00
type=0, flags=0x00000000, frames=0, userbits=0x00000000
[ 1473.054355] sn9c20x: v4l_sn9c20x_ioctl 0F
[ 1473.054357] sn9c20x: VIDIOC_QBUF
[ 1473.054360] sn9c20x: Queuing buffer 1.
[ 1473.054363] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF
00:00:00.00000000 index=1, type=vid-cap, bytesused=0,
flags=0x00000000, field=1, sequence=0, memory=mmap, offset/
userptr=0xabcdef01, length=16777216
[ 1473.054373] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00
type=0, flags=0x00000000, frames=0, userbits=0x00000000
[ 1473.054378] sn9c20x: v4l_sn9c20x_ioctl 12
[ 1473.054382] SN9C20x USB 2.0 Webcam Driver: VIDIOC_STREAMON type=vid-
cap
[ 1473.054388] sn9c20x: VIDIOC_STREAMON
[ 1473.054662] sn9c20x: Found Endpoint 0x1
[ 1473.055031] sn9c20x: usb_sn9c20x_isoc_init()
[ 1473.056444] sn9c20x: v4l_sn9c20x_ioctl 11
[ 1473.056448] sn9c20x: VIDIOC_DQBUF
[ 1473.118658] sn9c20x: AVGY Total: 323206 (631)
[ 1473.118679] sn9c20x: Dequeuing buffer 0 (3, 460800 bytes).
[ 1473.118683] sn9c20x: Sensor YAVG: 631
[ 1473.118686] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF
344801:11:48.00456315 index=0, type=vid-cap, bytesused=460800,
flags=0x00000001, field=1, sequence=0, memory=mmap, offset/
userptr=0x00000000, length=460800
[ 1473.118697] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00
type=0, flags=0x00000000, frames=0, userbits=0x00000000
[ 1473.122016] sn9c20x: v4l_sn9c20x_ioctl 0F
[ 1473.122023] sn9c20x: VIDIOC_QBUF
[ 1473.122025] sn9c20x: Queuing buffer 0.
[ 1473.122028] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF
00:00:00.00000000 index=0, type=vid-cap, bytesused=0,
flags=0x00000000, field=1, sequence=0, memory=mmap, offset/
userptr=0xabcdef00, length=16777216
[ 1473.122039] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00
type=0, flags=0x00000000, frames=0, userbits=0x00000000
[ 1473.122945] sn9c20x: v4l_sn9c20x_ioctl 11
[ 1473.122950] sn9c20x: VIDIOC_DQBUF
[ 1473.153645] sn9c20x: AVGY Total: 323021 (630)
[ 1473.167179] sn9c20x: Dequeuing buffer 1 (3, 460800 bytes).
[ 1473.167182] sn9c20x: Sensor YAVG: 630
[ 1473.167185] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF
344801:11:48.00491301 index=1, type=vid-cap, bytesused=460800,
flags=0x00000001, field=1, sequence=1, memory=mmap, offset/
userptr=0x00071000, length=460800
[ 1473.167192] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00
type=0, flags=0x00000000, frames=0, userbits=0x00000000
[ 1473.170185] sn9c20x: v4l_sn9c20x_ioctl 0F
[ 1473.170190] sn9c20x: VIDIOC_QBUF
[ 1473.170191] sn9c20x: Queuing buffer 1.
[ 1473.170194] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF
00:00:00.00000000 index=1, type=vid-cap, bytesused=0,
flags=0x00000000, field=1, sequence=0, memory=mmap, offset/
userptr=0xabcdef01, length=16777216
[ 1473.170201] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00
type=0, flags=0x00000000, frames=0, userbits=0x00000000
[ 1473.171315] sn9c20x: v4l_sn9c20x_ioctl 13
[ 1473.171319] SN9C20x USB 2.0 Webcam Driver: VIDIOC_STREAMOFF
type=vid-cap
[ 1473.171324] sn9c20x: VIDIOC_STREAMOFF
[ 1473.172153] sn9c20x: Isoc cleanup
[ 1473.190907] sn9c20x: Isoc cleanup
[ 1473.190910] sn9c20x: Freeing 2 v4l2 buffers
[ 1473.736038] usb 2-1: firmware: requesting ueagle-atm/DSP4p.bin
[ 1473.738756] usb 2-1: [UEAGLE-ATM] requesting firmware ueagle-atm/
DSP4p.bin fa
=====================
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Lets make microdia webcams plug'n play, (currently plug'n pray)
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