[linux-usb-devel] Re: USB: gphoto2 hangs, device disconnection oddity (was Re: 2.6.5-rc1-mm2)

[Ari Pollak]

I'd like to note that I'm seeing the same behavior under gphoto2 with my 
Canon S400 on a Thinkpad T41. I'm positive this is related to my other 
thread about problems with my USB mouse (the dmesg output from this guy 
is pretty similar to the mouse problem) and possibly the Lucent OHCI 
PCMCIA controller. I'd be happy to test any patches you can come up 
with, since it seems like USB has totally hosed itself in recent kernels.

Alan Stern wrote:
[Removed Andrew Morton and LKML from CC: list]

On Thu, 18 Mar 2004, Sean Neakums wrote:


On one machine (a Dell Inspiron 4100 laptop), with 2.6.5-rc1-mm2 and
2.6.5-rc1-mm1, but not with 2.6.5-rc1, gphoto2 hangs trying to talk to
my camera:
   $ ps -C gphoto2 -o comm,s,wchan
   COMMAND          S WCHAN
   gphoto2          D usb_disable_device
However, I was able to connect, mount and perform large transfers to a
USB Storage device without any problems, although the device still
shows up in lsusb after it is umounted and disconnected, and plugging
in the camera has no effect, which is how I first noticed this problem.


Can you turn on USB debugging in the kernel configuration for your laptop 
and post the dmesg output you get when: connecting, running gphoto2, 
disconnecting, and reconnecting?

Alan Stern


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