¡Hola Atsuhito! El 2013-06-11 a las 09:50 +0900, Atsuhito Kohda escribió: > Bus 001 Device 003: ID 04f2:1060 Chicony Electronics Co., Ltd
> Bus 002 Device 004: ID 046d:08b5 Logitech, Inc. QuickCam Sphere These two are webcams, right? You know which one is /dev/video0 and which is /dev/video1? > > If you have xawtv/build-config in true the postinst script of xawtv might > > call > > scantv, which would open the first v4l2 device and search signals in the > > specified frequencies, if this is causing your system to hang I would > > suspect > > of a kernel issue regarding the module for your first v4l2 device (scantv > > might be slow, or even buggy, but it shouldn't hang your system, that's > > normally a kernel issue.). You can skip the scantv by reconfiguring xawtv > > and > > setting xawtv/build-config: false. > > A bit more precisely, when I did run xawtv, it opens > a window with black screen and so I right clicked on > the window to quit. > Then I selected "Quit" but suddenly I saw console screen > full of characters (seems messages from kernel). > Then I could't do anything than pressing power button. So, you got a kernel Oops. Following the same steps with the previous version of xawtv won't crash? My guess is still a kernel module issue, but I'll try to follow the exit code of xawtv and check what could have changed. > If you need any other information please let me know. Please confirm me if the previous version doesn't crash. Also, the kernel error would be quite useful, but to obtain it you'll need to reproduce the problem, make sure to close all the other programs, save your files and sync your disks before testing this. Also you might need to take a picture of the screen if the computer ends up in a non-responsive state. It might be also valuable to check the reproduceability with only one of the cameras. Testing this bug with another computer (with a kernel version similar to the one you reported) I got an interesting message: This is xawtv-3.103, running on Linux/x86_64 (3.2.0-4-rt-amd64) xinerama 0: 1366x768+0+0 vid-open-auto: using grabber/webcam device /dev/video0 ioctl: VIDIOC_S_FMT(type=VIDEO_CAPTURE;fmt.pix.width=384;fmt.pix.height=288;fmt.pix.pixelformat=0x34524742 [BGR4];fmt.pix.field=ANY;fmt.pix.bytesperline=0;fmt.pix.sizeimage=202752;fmt.pix.colorspace=SRGB;fmt.pix.priv=0): Invalid argument Error: Object "xawtv" does not have windowed ancestor The last two lines are not printed with the previous xawtv version (3.102-3). After upgrading the kernel, and xawtv, the last two lines went away. So, it might be that the ioctl call ends up in kernel module error for the module that handles your webcam in your system. -- "If you think your users are idiots, only idiots will use it." -- Linus Torvalds Saludos /\/\ /\ >< `/
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