Hi, > According to Stefan; > > https://lists.berlios.de/pipermail/linux-uvc-devel/2007-March/001476.html > > .. the reset functionality is a part of a patch that is applied against > the UVC Module that get compiled and included in the kernel. From > my reading of the code, it automatically resets the USB device (without > user intervention). Thus no command is required. > > But, to my understanding, this patch is not included by default in UVC.
That's right. The patch helped a few people, but failed to fix the bug for others. As this is a pretty intrusive workaround, I'm not really keen on including it by default if it can't fix the problem for most users. Cheers, Laurent Pinchart > ----- Original Message ----- > > >From: "Dieter Rogiest" <[EMAIL PROTECTED]> > >To: <[email protected]> > >Subject: [Linux-uvc-devel] How to reset Quickcam Fusion if it locks up > > (USB timing bug in > > hardware)? > > >Date: Fri, 16 Mar 2007 07:03:57 +0100 > > > > Sometimes Ekiga 2.0.7 can no longer show video output of my webcam > > Quickcam Fusion. > > When I then run luvcview I get this error message: > > Unable to set format: 5. > > Init v4L2 failed !! exit fatal > > > > Only way I could my webcam working again was to reboot the whole > > computer. Luckily I found in this mailing-list that unplugging the USB > > cord of the webcam for a second resets the webcam. > > I also read that one can "call usb_reset_device()", but I can't find info > > on that. What command can I use in linux to reset my webcam (it would be > > faster than getting up and reaching behind my desk to unplug the usb > > cord)? > > > > Thank you, > > > > Dieter > > _______________________________________________ > > Linux-uvc-devel mailing list > > [email protected] > > https://lists.berlios.de/mailman/listinfo/linux-uvc-devel > > -- > Ian Latter > Late night coder .. > http://midnightcode.org/ > _______________________________________________ > Linux-uvc-devel mailing list > [email protected] > https://lists.berlios.de/mailman/listinfo/linux-uvc-devel _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
