Le vendredi 28 décembre 2007, Laurent Pinchart a écrit : > That doesn't look good. Do the 'USB disconnect' messages appear on their > own when you're not doing anything, or are they printed only when you try > to use the webcam ? Please try to plug the camera in another port and see > if it helps.
here it is. after the ">", the lines from dmesg. rmmod uvcvideo (ro remove the old version) >usbcore: deregistering driver uvcvideo insmod ./uvcvideo.ko >uvcvideo: Found UVC 1.00 device Philips SPC 1000NC Webcam (0471:0332) >usbcore: registered new driver uvcvideo >USB Video Class driver (v0.1.0) press the camera button >uvcvideo: Button event (1). >uvcvideo: Button event (0). [EMAIL PROTECTED] luvcview-20070512]$ ./luvcview -d /dev/video1 luvcview version 0.2.1 Video driver: x11 A window manager is available video /dev/video1 Stop asked Clean Up done Quit >nothing in dmesg [EMAIL PROTECTED] luvcview-20070512]$ ./luvcview -d /dev/video1 luvcview version 0.2.1 Video driver: x11 A window manager is available video /dev/video1 Unable to dequeue buffer (5). Error grabbing Clean Up done Quit >usb 1-1: USB disconnect, address 2 >usb 1-1: new high speed USB device using ehci_hcd and address 3 >usb 1-1: configuration #1 chosen from 1 choice >uvcvideo: Found UVC 1.00 device Philips SPC 1000NC Webcam (0471:0332) >3:3:1: cannot get freq at ep 0x84 also, /dev/video1 has been recreated: it was: >crw-rw---- 1 fred video 81, 1 2007-12-29 12:12 /dev/v4l/video1 and is now, after the failure: >crw-rw---- 1 fred video 81, 1 2007-12-29 12:25 /dev/v4l/video1 note the change in the time. again a failure of luvcview: >usb 1-1: USB disconnect, address 3 >usb 1-1: new high speed USB device using ehci_hcd and address 4 >usb 1-1: configuration #1 chosen from 1 choice >uvcvideo: Found UVC 1.00 device Philips SPC 1000NC Webcam (0471:0332) >4:3:1: cannot get freq at ep 0x84 then another: >usb 1-1: USB disconnect, address 4 >usb 1-1: new high speed USB device using ehci_hcd and address 5 >usb 1-1: configuration #1 chosen from 1 choice >uvcvideo: Found UVC 1.00 device Philips SPC 1000NC Webcam (0471:0332) >5:3:1: cannot get freq at ep 0x84 then it works (and nothing in dmesg). there is no logical suite in the failures and successes (like 2 failures then one success). so let's try to change the plug: unplug: >usb 1-1: USB disconnect, address 13 plug: >usb 1-3: new high speed USB device using ehci_hcd and address 14 >usb 1-3: configuration #1 chosen from 1 choice >uvcvideo: Found UVC 1.00 device Philips SPC 1000NC Webcam (0471:0332) >14:3:1: cannot get freq at ep 0x84 again luvcview fails then works then fails then fails... >usb 1-3: USB disconnect, address 14 >usb 1-3: new high speed USB device using ehci_hcd and address 15 >usb 1-3: configuration #1 chosen from 1 choice >uvcvideo: Found UVC 1.00 device Philips SPC 1000NC Webcam (0471:0332) >15:3:1: cannot get freq at ep 0x84 ok, this was my only usb2 controller, so let's try a USB1 controller: >usb 1-3: USB disconnect, address 15 >usb 5-2: new full speed USB device using uhci_hcd and address 4 >usb 5-2: not running at top speed; connect to a high speed hub >usb 5-2: configuration #1 chosen from 1 choice >uvcvideo: Found UVC 1.00 device Philips SPC 1000NC Webcam (0471:0332) >4:3:1: cannot get freq at ep 0x84 surprise! luvcview always work properly! and with the same fps (12). so now I've a work-around, but still I'd like to help it work on the USB2 controller if it suits you, because maybe others will have the same problem... bye and have a good "fêtes de fin d'année" ! (you're speaking french, Laurent, aren't you?) -- Jean-Christophe "Jicé" Cardot - cofondateur de http://lea-linux.org
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