mactel-support team mailing list archive

[rbhkamal <216310@xxxxxxxxxxxxxxxxxx>]

This bug is still happening on Oneiric, however, removing the Nvidia
drivers will fix this issue. I tried all versions of the drivers. I even
installed the one from their website (version 295.33) and still not
luck.

fyi,
I tried the extracted isight.fw
I tried creating a udev rule
I tried to recompile uvcvideo
The only thing that works is removing the NVIDIA drivers.

Apr  5 16:39:18 shaka kernel: [  177.661293] usbcore: deregistering interface driver uvcvideo
Apr  5 16:39:24 shaka kernel: [  183.929693] uvcvideo: Found UVC 1.00 device Built-in iSight (05ac:8507)
Apr  5 16:39:24 shaka kernel: [  183.929717] uvcvideo: No valid video chain found.
Apr  5 16:39:24 shaka kernel: [  183.929801] usbcore: registered new interface driver uvcvideo
Apr  5 16:39:24 shaka kernel: [  183.929806] USB Video Class driver (v1.1.0)
Apr  5 16:43:09 shaka AptDaemon: INFO: Quitting due to inactivity
Apr  5 16:43:09 shaka AptDaemon: INFO: Quitting was requested
Apr  5 16:47:42 shaka kernel: [  681.597740] usbcore: registered new interface driver isight_firmware
Apr  5 16:48:29 shaka kernel: [  729.096759] usbcore: deregistering interface driver uvcvideo
Apr  5 16:48:37 shaka kernel: [  737.253893] Linux video capture interface: v2.00
Apr  5 16:48:47 shaka kernel: [  747.483650] uvcvideo: Found UVC 1.00 device Built-in iSight (05ac:8507)
Apr  5 16:48:47 shaka kernel: [  747.483675] uvcvideo: No valid video chain found.
Apr  5 16:48:47 shaka kernel: [  747.483759] usbcore: registered new interface driver uvcvideo
Apr  5 16:48:47 shaka kernel: [  747.483764] USB Video Class driver (v1.1.0)


$:/var/log$ uname -a
Linux shaka 3.0.0-17-generic #30-Ubuntu SMP Thu Mar 8 17:34:21 UTC 2012 i686 i686 i386 GNU/Linux

$:/var/log$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 11.10
Release:	11.10
Codename:	oneiric

-- 
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Support, which is the registrant for Mactel Support.
https://bugs.launchpad.net/bugs/216310

Title:
  [hardy] uvcvideo: No valid video chain found with isight

Status in Mactel Support:
  Won't Fix
Status in “linux” package in Ubuntu:
  Fix Released

Bug description:
  The isight firmware gets loaded correctly but it fails to register a video device:
  [   62.810912] uvcvideo: No valid video chain found.

  My system is up2date as of today.

  Linux helios 2.6.24-16-generic #1 SMP Thu Apr 10 13:23:42 UTC 2008
  i686 GNU/Linux

  The driver fails in uvc_driver.c:
  list_for_each_entry(streaming, &dev->streaming, list) {
                          if (streaming->header.bTerminalLink == term->id) {
                                  dev->video.streaming = streaming;
                                  found = 1;
                                  break;
                          }
                  }

                  if (found)
                          break;
          }

          if (!found) {
                  uvc_printk(KERN_INFO, "No valid video chain found.\n");
                  return -1;
          }

  I will attach lsusb -vv

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