[Bug 293259] Re: Some gspca Webcams not detected in ubuntu 8.10 and Kernel 2.6.27 anymore (for which in 8.04 an alternative driver had to be blacklisted)

[yasou]

** Summary changed:

- Webcam (gspca) is not detected anymore since ubuntu 8.10 and Kernel 2.6.27
+ Some gspca Webcams not detected in ubuntu 8.10 and Kernel 2.6.27 anymore (for which in 8.04 an alternative driver had to be blacklisted)

** Description changed:

- 
  == Regression details ==
  Discovered in version: linux-image-2.6.27-7-generic
  Last known good version: linux-image-2.6.24-21-generic
  
  
  I have a Z-Star Microelectronics Corp. ZC0303 WebCam
  GSPCA-driver: gspca_zc3xx
  
  the camera is detected when the zc0301 driver is loaded,  but only with
- v4l2 and thus only with ekiga. (no v4l support here) In Hardy 8.04 I
- just blacklisted zc0301 and gspca took over the cam automatically and
- cam worked flawlessly.
+ v4l2 and thus only with ekiga. (no v4l support in this driver) In Hardy
+ 8.04 I just blacklisted zc0301 and gspca took over the cam automatically
+ and cam worked flawlessly.
  
- Since 8.10 the cam is not detected after removing zc0301 anymore. Dmesg only gives me:
+ Since 8.10 the cam is not detected after blacklisting zc0301 anymore. Dmesg only gives me:
  [29143.996060] usb 2-1: new full speed USB device using uhci_hcd and address 6
  [29144.197121] usb 2-1: configuration #1 chosen from 1 choice
  
  I think it is connected with the kernel 2.6.27, and I have found a similar bug at bugzilla.kernel.org:
  http://bugzilla.kernel.org/show_bug.cgi?id=11920
  
- I was able to compile the newest version of gspca using these instructions: http://moinejf.free.fr/gspca_README.txt
- Still after installing the new drivers the camera is not detected. Thus I don't think that the gspca driver that comes with ubuntu is causing the problem.
+ Compiling the newest version of gspca using these instructions: http://moinejf.free.fr/gspca_README.txt
+ does not help immediately.
  
- I believe it is something with the kernel itself, or the way gspca and
- v4l are built into the kernel, but as I don't really know how the linux
- kernel and driver function I don't know what could be wrong.
+ to solve this problem you have to simply uncheck the zc0301 driver when
+ compiling gspca (see here for instructions:
+ http://moinejf.free.fr/gspca_README.txt) using e.g. make menuconfig.
+ Compiling it with the zc0301 driver was not putting the vend:prod into
+ the gspca module, as described by Moine in the kernel bug report, and so
+ was preventing the gspca driver from detecting the camera. In Hardy 8.04
+ it was enough to backlist the zc0301 module.
+ 
+ The entry in the bugzilla kernel talks about the sn9c102 driver, that
+ has to be removed, so it seems it applies to more than one model/type of
+ webcams. For sn9c102 the driver has also to be removed when compiling
+ gspca. In both cases it was enough to blacklist the drivers in Hardy.

-- 
Some gspca Webcams not detected in ubuntu 8.10 and Kernel 2.6.27 anymore (for which in 8.04 an alternative driver had to be blacklisted)
https://bugs.launchpad.net/bugs/293259
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