Chris Vanden Berghe schrieb:
> Hi all,
> 
> I'm having exactly the same problem with revision 186 and kernel
> 2.6.24-8 on Kubuntu 8.04.
> 
> The isight firmware and module load successfully, but no video device is 
> created.
> 
> Feb 20 23:35:52 darwin kernel: [ 35.648328] uvcvideo: Found UVC 1.00 
> device Built-in iSight (05ac:8501)
> Feb 20 23:35:52 darwin kernel: [ 35.648336] uvcvideo: No valid video 
> chain found.
> Feb 20 23:35:52 darwin kernel: [ 35.649122] usbcore: registered new 
> interface driver uvcvideo
> Feb 20 23:35:52 darwin kernel: [ 35.649126] USB Video Class driver (SVN 
> r186)
> 
> Does anybody know a solution/workaround for this problem?
It does work for me.

dmesg:
> uvcvideo: Adding mapping Brightness to control 
> 00000000-0000-0000-0000-000000000101/2.
> uvcvideo: Adding mapping Contrast to control 
> 00000000-0000-0000-0000-000000000101/3.
> uvcvideo: Adding mapping Hue to control 
> 00000000-0000-0000-0000-000000000101/6.
> uvcvideo: Adding mapping Saturation to control 
> 00000000-0000-0000-0000-000000000101/7.
> uvcvideo: Adding mapping Sharpness to control 
> 00000000-0000-0000-0000-000000000101/8.
> uvcvideo: Adding mapping Gamma to control 
> 00000000-0000-0000-0000-000000000101/9.
> uvcvideo: Adding mapping Backlight Compensation to control 
> 00000000-0000-0000-0000-000000000101/1.
> uvcvideo: Adding mapping Gain to control 
> 00000000-0000-0000-0000-000000000101/4.
> uvcvideo: Adding mapping Power Line Frequency to control 
> 00000000-0000-0000-0000-000000000101/5.
> uvcvideo: Adding mapping Hue, Auto to control 
> 00000000-0000-0000-0000-000000000101/16.
> uvcvideo: Adding mapping Exposure, Auto to control 
> 00000000-0000-0000-0000-000000000001/2.
> uvcvideo: Adding mapping Exposure, Auto Priority to control 
> 00000000-0000-0000-0000-000000000001/3.
> uvcvideo: Adding mapping Exposure (Absolute) to control 
> 00000000-0000-0000-0000-000000000001/4.
> uvcvideo: Adding mapping White Balance Temperature, Auto to control 
> 00000000-0000-0000-0000-000000000101/11.
> uvcvideo: Adding mapping White Balance Temperature to control 
> 00000000-0000-0000-0000-000000000101/10.
> uvcvideo: Adding mapping Focus (absolute) to control 
> 00000000-0000-0000-0000-000000000001/6.
> uvcvideo: Adding mapping Focus, Auto to control 
> 00000000-0000-0000-0000-000000000001/8.
> uvcvideo: Probing known UVC device 4 (05ac:8501)
> uvcvideo: Found format YUV 4:2:2 (UYVY).
> uvcvideo: - 640x480 (30.0 fps)
> uvcvideo: - 352x288 (30.0 fps)
> uvcvideo: - 320x240 (30.0 fps)
> uvcvideo: Found a Status endpoint (addr 81).
> uvcvideo: Found UVC 1.00 device Built-in iSight (05ac:8501)
> uvcvideo: Added control 00000000-0000-0000-0000-000000000101/2 to device 4 
> entity 2
> uvcvideo: Added contlrol 00000000-0000-0000-0000-000000000101/7 to device 4 
> entity 2
> uvcvideo: Added control 00000000-0000-0000-0000-000000000101/8 to device 4 
> entity 2
> uvcvideo: Added control 00000000-0000-0000-0000-000000000101/9 to device 4 
> entity 2
> uvcvideo: Scanning UVC chain: OT 3 <- PU 2 <- IT 1
> uvcvideo: Found a valid video chain (1 -> 3).
> uvcvideo: Failed to query (135) UVC control 1 (unit 0) : -32 (exp. 26).
> uvcvideo: UVC device initialized.
> usbcore: registered new interface driver uvcvideo
> USB Video Class driver (SVN r186)

# lsusb
Bus 001 Device 006: ID 05ac:8501 Apple Computer, Inc. Built-in iSight 
[Micron]

# md5sum /lib/firmware/isight.fw
6d4b6764538e85ab9e7e15ed21b7a60c  /lib/firmware/isight.fw

You should reread http://bersace03.free.fr/ift/ and ask Étienne Bersac 
for some help.

greetings
Felix Möller
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