Hi, On 09/08/2013 01:37 PM, Frank Dierich wrote:
Hi,I have an ASUS A8JP Notebook with Ubuntu 12.04 with the following build in webcam Bus 001 Device 004: ID 0ac8:0321 Z-Star Microelectronics Corp. Vimicro generic vc0321 Camera The camera is working nice with Cheese and kernels before 3.2. I have tested the following once 2.6.32.61, 2.6.33.20, 2.6.34.11, 2.6.35.14, 2.6.36.4, 2.6.37.6, 2.6.38.8, 2.6.39.4, 3.0.94, 3.1.10. In all later kernels I have tested (3.2.50, 3.4.60, 3.10.10, 3.11.0) Cheese shows for some seconds a green and noisy image and crashes then with a segmentation fault. On the web I found some bug reports very similar to my problem but no one of these leads to a solution. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=677533 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/990749 In the following i give some informations about my system which hopefully helps to find the problem.
Thanks for the bug report, looking at the bug reports, they all report an error of -71 which is EPROTO, which typically means something is wrong at the USB level. And nothing has changed for the driver in question between 3.1 and 3.2 , so I believe this regression is caused by changes to the usb sub-system, likely changes to the EHCI driver. The best way forward with this is probably to bisect the problem, and then send a mail to linux-usb@vger.kernel.org about this. Please CC me on this mail. Regards, Hans -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
