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lyallp
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Joined: 15 Jul 2004
Posts: 1600
Location: Adelaide/Australia
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 Posted: Thu Dec 16, 2010 9:20 am Post subject: Webcams - the BANE of my life! |
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Can someone suggest a WebCam that just works with Gentoo linux (after I enable the appropriate kernel drivers)?
I just bought some cheapo webcams, this one identifies itself as an ARKMICRO USB Vendor: 18ec, Product: 3299 - which seem to work Ok in windoze.
According to Linux UVC drivers and tools, the camera is supported.
When I did | Code: | | echo 0 > /sys/module/uvcvideo/parameters/quirks |
, I found that the webcam works, albeit crappily and ONLY if plugged into a MoBo USB Port, not my normal USB Hub. Also, the framerate seems a bit sluggish - read that as about 6 frames per second.
I also note the complaint in /var/log/messages that the device is not running at full speed, when it's plugged into a full speed hub. Even plugged into a MoBo port, the same running speed message is generated.
Finally, I am unsure as to how to control the brightness/exposure, using mplayer.
message log, on plugin is...
| Code: | Dec 16 19:32:56 lyalls-pc kernel: usb 2-1.3.4.3: new full speed USB device using ehci_hcd and address 12
Dec 16 19:32:57 lyalls-pc kernel: usb 2-1.3.4.3: not running at top speed; connect to a high speed hub
Dec 16 19:32:57 lyalls-pc kernel: usb 2-1.3.4.3: New USB device found, idVendor=18ec, idProduct=3299
Dec 16 19:32:57 lyalls-pc kernel: usb 2-1.3.4.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Dec 16 19:32:57 lyalls-pc kernel: usb 2-1.3.4.3: Product: USB2.0 PC CAMERA
Dec 16 19:32:57 lyalls-pc kernel: usb 2-1.3.4.3: Manufacturer: ARKMICRO
Dec 16 19:32:57 lyalls-pc kernel: uvcvideo: Found UVC 1.00 device USB2.0 PC CAMERA (18ec:3299)
Dec 16 19:32:57 lyalls-pc kernel: uvcvideo: Forcing device quirks to 0x2 by module parameter for testing purpose.
Dec 16 19:32:57 lyalls-pc kernel: uvcvideo: Please report required quirks to the linux-uvc-devel mailing list.
Dec 16 19:32:57 lyalls-pc kernel: uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround.
Dec 16 19:32:57 lyalls-pc kernel: input: USB2.0 PC CAMERA as /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.3/2-1.3.4/2-1.3.4.3/2-1.3.4.3:1.0/input/input9
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lsusb is | Code: | # lsusb
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 012: ID 18ec:3299
Bus 002 Device 009: ID 413c:2006 Dell Computer Corp.
Bus 002 Device 007: ID 045e:0724 Microsoft Corp.
Bus 002 Device 006: ID 0409:005a NEC Corp. HighSpeed Hub
Bus 002 Device 003: ID 050d:3201 Belkin Components F1DF102U/F1DG102U Flip KVM
Bus 002 Device 004: ID 0409:005a NEC Corp. HighSpeed Hub
Bus 002 Device 002: ID 0424:2524 Standard Microsystems Corp. USB MultiSwitch Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 008: ID 413c:1004 Dell Computer Corp.
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v4l-info is
| Code: |
# v4l-info
### v4l2 device info [/dev/video0] ###
general info
VIDIOC_QUERYCAP
driver : "uvcvideo"
card : "USB2.0 PC CAMERA"
bus_info : "usb-0000:00:1d.7-1.3.4.3"
version : 0.1.0
capabilities : 0x4000001 [VIDEO_CAPTURE,STREAMING]
standards
inputs
VIDIOC_ENUMINPUT(0)
index : 0
name : "Camera 1"
type : CAMERA
audioset : 0
tuner : 0
std : 0x0 []
status : 0x0 []
video capture
VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
index : 0
type : VIDEO_CAPTURE
flags : 1
description : "MJPEG"
pixelformat : 0x47504a4d [MJPG]
VIDIOC_G_FMT(VIDEO_CAPTURE)
type : VIDEO_CAPTURE
fmt.pix.width : 640
fmt.pix.height : 480
fmt.pix.pixelformat : 0x47504a4d [MJPG]
fmt.pix.field : NONE
fmt.pix.bytesperline : 0
fmt.pix.sizeimage : 614400
fmt.pix.colorspace : unknown
fmt.pix.priv : 0
controls
VIDIOC_QUERYCTRL(BASE+0)
id : 9963776
type : INTEGER
name : "Brightness"
minimum : 0
maximum : 255
step : 1
default_value : 110
flags : 0
VIDIOC_QUERYCTRL(BASE+1)
id : 9963777
type : INTEGER
name : "Contrast"
minimum : 0
maximum : 255
step : 1
default_value : 110
flags : 0
VIDIOC_QUERYCTRL(BASE+2)
id : 9963778
type : INTEGER
name : "Saturation"
minimum : 0
maximum : 255
step : 1
default_value : 50
flags : 0
VIDIOC_QUERYCTRL(BASE+3)
id : 9963779
type : INTEGER
name : "Hue"
minimum : -128
maximum : 127
step : 1
default_value : 0
flags : 0
### video4linux device info [/dev/video0] ###
general info
VIDIOCGCAP
name : "USB2.0 PC CAMERA"
type : 0x1 [CAPTURE]
channels : 1
audios : 0
maxwidth : 640
maxheight : 480
minwidth : 48
minheight : 32
channels
VIDIOCGCHAN(0)
channel : 0
name : "Camera 1"
tuners : 0
flags : 0x0 []
type : CAMERA
norm : 0
tuner
ioctl VIDIOCGTUNER: Invalid argument
audio
ioctl VIDIOCGAUDIO: Invalid argument
picture
VIDIOCGPICT
brightness : 28270
hue : 32896
colour : 12850
contrast : 28270
whiteness : 26214
depth : 0
palette : unknown
buffer
ioctl VIDIOCGFBUF: Invalid argument
window
VIDIOCGWIN
x : 0
y : 0
width : 640
height : 480
chromakey : 0
flags : 0
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DONAHUE
Watchman
Joined: 09 Dec 2006
Posts: 7651
Location: Goose Creek SC
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| Posted: Thu Dec 16, 2010 5:27 pm Post subject: |
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ID 046d:09a2 Logitech, Inc. QuickCam Communicate Deluxe/S7500
old and now cheap, works beautifully here but is not on a hub
kernel:
| Quote: | <M> USB Video Class (UVC)
[*] UVC input events device support |
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lyallp
Veteran
Joined: 15 Jul 2004
Posts: 1600
Location: Adelaide/Australia
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| Posted: Thu Dec 16, 2010 10:25 pm Post subject: |
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Quite some time ago I found my webcam would not work on a hub.
I concluded the USB drivers in the kernel (not the webcam ones) need a little work.
Unfortunately, that was and still is out of my skill set.
Maybe I should have another look.
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