On Sun, 2009-03-22 at 16:46 -0500, Mike Burrows wrote:
> >
> > Building modules outside the kernel can be fraught with problems
> > though...
> >
> > Adrian
>
> Think the required module went in ok:
>
> testerm...@marvin:/$ lsmod
> Module Size Used by
> quickcam_messenger 12420 0
> usbvideo 24324 1 quickcam_messenger
>
> bt878 10408 0
>
> bttv 157172 1 bt878
> video_buf 22532 1 bttv
> firmware_class 9472 1 bttv
> ir_common 27780 1 bttv
> ompat_ioctl32 1536 2 usbvideo,bttv
> i2c_algo_bit 8584 1 bttv
>
> btcx_risc 4872 1 bttv
>
> tveeprom 13968 1 bttv
> videodev 21120 2 usbvideo,bttv
> v4l1_compat 12164 1 videodev
> v4l2_common 20480 3 tuner,bttv,videodev
>
> i2c_core 19472 6 tuner,tvaudio,bttv,i2c_algo_bit,tv
>
> usbcore 109444
> quickcam_messenger,usbvideo,usbhid ,ohci_hcd
>
> But nothing seems to recognise the usb quick cam is there: eg.
>
> testerm...@marvin:/$ xawtv -hwscan
> This is xawtv-3.95.dfsg.1, running on Linux/i686 (2.6.18-4-486)
> looking for available devices
> port 60-60 [ -xvport 60 ]
> type : Xvideo, video overlay
> name : video4linux
>
> port 61-61
> type : Xvideo, image scaler
> name : SIS 300/315/330 series Video Overlay
>
> /dev/video0: OK [ -device /dev/video0 ]
> type : v4l2
> name : BT878 video (Hauppauge (bt878))
> flags: overlay capture tuner
>
>
> How do I assign video0 to the webcam please?
>
> TIA
> Mike
>
> PS I am assuming that quickcam_messenger is the right module of course!
> I am using an older style logitech quickcam.
>
I had mixed success with USB webcams on Ubuntu 8.10. These were combined
with a BT878 PCI card capture card (two in fact) running with
Zoneminder. It took some playing around (mostly of the illogical poking
kind) but I made a few notes. I was able to get a number of cameras to
work, but others (the Sony Itoy for one) plain refused. Of the
'successes' was a Logitec QuickCam Messenger and, to my surprise, the
Asda own brand £5 offering.
The tools I used to 'help' were 'EasyCam2' (to install) and 'Cheese'.
Video4Linux was also in the mix.
The troubleshooting was basic;
# lsusb
Bus 007 Device 004: ID 1058:0901 Western Digital Technologies, Inc.
Bus 007 Device 003: ID 0bc2:0503 Seagate RSS LLC
Bus 007 Device 001: ID 0000:0000
Bus 006 Device 001: ID 0000:0000
Bus 005 Device 001: ID 0000:0000
Bus 004 Device 022: ID 046d:08f0 Logitech, Inc. QuickCam Messenger
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 002: ID 1131:1001 Integrated System Solution Corp.
KY-BT100 Bluetooth Adapter
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 004: ID 093a:2460 Pixart Imaging, Inc.
Bus 001 Device 001: ID 0000:0000
Both USB Webcams in the list (Asda is Pixart)
(aside: got the video sizes with lsusb -v)
This gave me some hints too;
#lsmod | grep video
videobuf_dma_sg 14980 1 bttv
videobuf_core 18820 2 bttv,videobuf_dma_sg
usbvideo 28676 2 quickcam_messenger
compat_ioctl32 2304 2 bttv,usbvideo
videodev 29440 7 gspca,bttv,qcmessenger,usbvideo
v4l2_common 18304 2 bttv,videodev
v4l1_compat 15492 2 bttv,videodev
usbcore 146412 12
snd_usb_audio,snd_usb_lib,usb_storage,libusual,gspca,qcmessenger,quickcam_messenger,usbvideo,hci_usb,ehci_hcd,uhci_hcd
This was then fired off to see what was what;
xawtv -hwscan
This is xawtv-3.95.dfsg.1, running on Linux/i686 (2.6.24-21-generic)
looking for available devices
port 73-73
type : Xvideo, image scaler
name : ATI Radeon Video Overlay
/dev/video0: OK [ -device /dev/video0 ]
type : v4l
name : Qtec Webcam 100
flags: capture
/dev/video1: OK [ -device /dev/video1 ]
type : v4l
name : QCM USB Camera
flags: capture
/dev/video2: OK [ -device /dev/video2 ]
type : v4l2
name : BT878 video ( *** UNKNOWN/GENER
flags: overlay capture tuner
However, trying to view the output with xawtv gave an error. Googling
turned up this gem;
# xawtv -nodga -device /dev/video0
This may all be total twaddle and useless to you - but it may just help
you piece something together. If you have something already working (the
BT878) then you are *very close* to solving this. I do also recall
having to change some of the module options on load to get things the
way I wanted (BT878 was outputting black and white) - but in a nutshell
it pretty much 'just worked' for me. EasyCam2 certainly did it for me,
and I suspect it did some of the hard work.
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