Hi,
I added Marcus Meissner to the conversation he is the developer of gphoto2,
I hope it's not a problem and he can help us.
Does the camera
> rely on the reset endpoint control transfer as a sort of soft reset?
Any hints on how can I verify this?
2013/2/25 Sarah Sharp <sarah.a.sh...@linux.intel.com>
> 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
>
>
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