On Sat, Feb 23, 2013 at 09:18:29PM +0800, Xiaofan Chen wrote: > On Sat, Feb 23, 2013 at 9:06 PM, Sipter Bálint <sp...@sch.bme.hu> wrote: > > > > 2013/2/22 Xiaofan Chen <xiaof...@gmail.com> > >> > >> On Fri, Feb 22, 2013 at 5:31 PM, Sipter Bálint <sp...@sch.bme.hu> wrote: > >> > Hi, > >> > we would like to use gphoto2 with multiple cameras at the same time. The > >> > gphoto2 uses libusb(x) when it is communicating with the cameras. > >> > Last time tried to use our bash script with a notebook that only had > >> > usb3 ports(the cameras are usb2). > >> > Unfortunately we ran into some trouble. When we first run gphoto2 > >> > everyting is fine, but after that we cant use it. Replugging the usb > >> > usually helps, > >> > but sometimes we need to restart. > >> > We tried debugging for hours, then we came to the conclusion if we > >> > disable the usb3 ports in the bios(so they work as usb2) everything is > >> > working again. > >> > Tired updating the components to the latest releases(gphoto2: 2.5.1.1, > >> > libghoto: 2.5.1, libusbx git-master,libusb-compat-0.1 git-master, linux > >> > kernel: 3.8-rc7). > >> > We tried compiling things in debug mode: Libusbx, libusb-compat and > >> > linux kernel(USB_DEBUG and XHCI_DEBUG). > >> > > >> > Here are the log files: > >> > Correct run: http://pastebin.com/Nh487CXn > >> > Second run(error): http://pastebin.com/RrcS3f70 > >> > Kernel log from the whole time: http://pastebin.com/gL002CrS
I note that after several untransferred bytes, the driver attempts to issue a reset endpoint request. However, the endpoints aren't actually stalled according to the xHC hardware, so the xHCI driver ignores the request. Shortly after that, the URB gets canceled. Does the camera rely on the reset endpoint control transfer as a sort of soft reset? Sarah Sharp ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb _______________________________________________ libusbx-devel mailing list libusbx-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusbx-devel
