Jeff Hi, 2010/4/2 Jeff Van Epps <lord...@lordbah.com>: > By changing some uvc_trace(UVC_TRACE_VIDEO.... to > uvc_trace(UVC_TRACE_IOCTL.... I was able to get out this message: > > uvcvideo: No fast enough alt setting for requested bandwidth.
Humm, there is also a bandwidth quirk, this was added for some vimicro cameras that set this wrong. try quirks=128 instead of quirks=16 see if that helps, Best regards, Paulo > > That gets printed the line before the return -EIO. > > I had options trace=255 from earlier. Hunted a bit and figured I could > probably just set options trace=65535 to get UVC_TRACE_VIDEO to work > too. Yep, one of the calls whose param I didn't change came out this time: > > uvcvideo: Device requested 5767680 B/frame bandwidth. > > Doesn't seem to make any difference whether I leave quirks=16 in or > remove it. > > What are "alt settings"? > > Where can I go from here? > > > _______________________________________________ > Linux-uvc-devel mailing list > Linux-uvc-devel@lists.berlios.de > https://lists.berlios.de/mailman/listinfo/linux-uvc-devel > _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
