pe, 2012-06-15 kello 23:41 -0500, Jonathan Nieder kirjoitti: > Martin-Éric Racine wrote: > > usb 1-7: new high-speed USB device number 3 using ehci_hcd > [...] > > usb 1-7: New USB device found, idVendor=0ac8, idProduct=0321 > > usb 1-7: New USB device strings: Mfr=1, Product=2, SerialNumber=0 > > usb 1-7: Product: USB2.0 Web Camera > > usb 1-7: Manufacturer: Vimicro Corp. > [...] > > Linux media interface: v0.10 > > Linux video capture interface: v2.00 > > gspca_main: v2.14.0 registered > > gspca_main: vc032x-2.14.0 probing 0ac8:0321 > > usbcore: registered new interface driver vc032x > > The device of interest is discovered. > > > gspca_main: ISOC data error: [36] len=0, status=-71 > > gspca_main: ISOC data error: [65] len=0, status=-71 > [...] > > gspca_main: ISOC data error: [48] len=0, status=-71 > > video_source:sr[3246]: segfault at 0 ip (null) sp ab36de1c error 14 in cheese[8048000+21000] > > gspca_main: ISOC data error: [17] len=0, status=-71 > > (The above data error spew starts around t=121 seconds and continues > at a rate of about 15 messages per second. The segfault is around > t=154.) > The vc032x code hasn't changed since 3.4.1, so please report your > symptoms to Jean-François Moine <moinejf@xxxxxxx>, cc-ing > linux-media@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, and either > me or this bug log so we can track it. Be sure to mention: > > - steps to reproduce, expected result, actual result, and how the > difference indicates a bug (should be simple enough in this case) 1. Ensure that user 'myself' is a member of the 'video' group. 2. Launch the webcam application Cheese from the GNOME desktop. Expected result: Cheese displays whatever this laptop's camera sees. Actual result: Cheese crashes while attempting to access the camera. > - how reproducible the bug is (100%?) 100% > - which kernel versions you have tested and result with each (what is > the newest kernel version that worked?) It probably was 3.1.0 or some earlier 3.2 release (the upcoming Debian will release with 3.2.x; 3.4 was only used here for testing purposes), but I wouldn't know for sure since I don't use my webcam too often. > - a log from booting and reproducing the bug, or a link to one See http://bugs.debian.org/677533 > - any other weird symptoms or observations When testing the camera using the closed-source Skype 4.x compiled for Debian, the video preferences dialog shows that a USB 2.0 camera is found at /dev/video0. However, no image is shown. This would confirm the assumption that the issue lies with the kernel video driver, rather than with the Gstreamer framework that Cheese uses to access the camera. > Hopefully someone upstream will have ideas for commands to run or > patches to apply to further track down the cause. Let's indeed hope so. Thanks for providing these instructions! Regards, Martin-Éric -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
