On Sun, Jul 24, 2011 at 10:44:41PM -0400, Dave Fine wrote: > I have a Microsoft LifeCam VX-3000. My desktop computer has two USB > buses. 4 external ports on one bus in the back of the computer, and 2 > external ports on another bus in the front. The webcam only works > properly on the front-facing ports. I'm using the lastest stable > release of the gspca_sonixj module. > > The problems I experience is that the webcam is not able to work with > Google's gchat video chatting. The screen remains black for a few > seconds, before fading to gray. Sometimes I see myself for a > split-second before it fades to gray permanently. The webcam always > work fine with local programs like cheese. > > syslog output: > > webcam plugged into "bad" USB bus: > > Jul 24 22:09:22 Bluemoon kernel: [432235.451132] usb 1-1.3: new full > speed USB device using ehci_hcd and address 10 > Jul 24 22:09:22 Bluemoon kernel: [432235.562660] gspca-2.13.2: probing 045e:00f5 > Jul 24 22:09:22 Bluemoon kernel: [432235.563467] sonixj-2.13.2: Sonix > chip id: 11 > Jul 24 22:09:22 Bluemoon kernel: [432235.564042] input: sonixj as > /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/input/input17 > Jul 24 22:09:22 Bluemoon kernel: [432235.564178] gspca-2.13.2: video0 created > Jul 24 22:09:22 Bluemoon rtkit-daemon[1365]: Successfully made thread > 9824 of process 1506 (n/a) owned by '1000' RT at priority 5. > Jul 24 22:09:22 Bluemoon rtkit-daemon[1365]: Supervising 4 threads of > 1 processes of 1 users. > Jul 24 22:09:40 Bluemoon kernel: [432253.344199] gspca-2.13.2: > bandwidth not wide enough - trying again > Jul 24 22:09:41 Bluemoon kernel: [432254.622338] gspca-2.13.2: > bandwidth not wide enough - trying again > Jul 24 22:09:42 Bluemoon kernel: [432255.900844] gspca-2.13.2: > bandwidth not wide enough - trying again > Jul 24 22:09:44 Bluemoon kernel: [432257.179608] gspca-2.13.2: > bandwidth not wide enough - trying again > Jul 24 22:09:45 Bluemoon kernel: [432258.457975] gspca-2.13.2: > bandwidth not wide enough - trying again > ... (repeats) > > > > webcam plugged into "good" USB bus: > Jul 24 22:06:47 Bluemoon kernel: [432080.751839] usb 2-1.4: new full > speed USB device using ehci_hcd and address 9 > Jul 24 22:06:47 Bluemoon kernel: [432080.863272] gspca-2.13.2: probing 045e:00f5 > Jul 24 22:06:47 Bluemoon kernel: [432080.863943] sonixj-2.13.2: Sonix > chip id: 11 > Jul 24 22:06:47 Bluemoon kernel: [432080.864304] input: sonixj as > /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/input/input15 > Jul 24 22:06:47 Bluemoon kernel: [432080.864578] gspca-2.13.2: video0 created > Jul 24 22:06:47 Bluemoon rtkit-daemon[1365]: Successfully made thread > 9637 of process 1506 (n/a) owned by '1000' RT at priority 5. > Jul 24 22:06:47 Bluemoon rtkit-daemon[1365]: Supervising 4 threads of > 1 processes of 1 users. > Jul 24 22:07:22 Bluemoon kernel: [432116.213808] gspca-2.13.2: > bandwidth not wide enough - trying again > Jul 24 22:07:24 Bluemoon kernel: [432117.542586] gspca-2.13.2: > bandwidth not wide enough - trying again > Jul 24 22:07:25 Bluemoon kernel: [432118.831024] gspca-2.13.2: > bandwidth not wide enough - trying again > (webcam operates normally at this point) > > > Has anyone seen this before? Any suggestions to help debug this? > Don't know if relates to your case, but here the webcam doesn't work properly if I connect it through a USB hub *AND* using 640x480 rather than 320x240 or 160x120. As it seems that this is a matter of bandwidth allocation, I didn't investigated this problem further, and solved it connecting the webcam directly to one of the notebook's USB port. - Luiz Ramos > -Dave > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
