Re: [Libusb-devel] photo2 hangs with Aiptec pencam

[Uwe K. <uwe...@fo...>]

Johannes Erdfelt wrote:

> If strace just blocks, then it's likely stuck in an uninterruptible
> sleep in the kernel. That's not good.
> 
I had the misshap in a standalone fashion once and my ssh session
with the strace attached was killed by IP reassignment before i had my
"remote hands" in place.
The next time ...
> 
>>I had this running on older versions of /SuSE/linux and libusb/gphoto
>>and even earlier with the pencam2 package
>>with very occasionally a camera giving problems with readout errors.
>>
>>Physically detaching the currently handled camera lets ghoto abort
>>in a reasonable way.
> 
> 
> Does strace continue when you physically unplug the device? I'd be
> interested to know where it was blocked.
I assume as much because the programm terminated properly after that.
But no valid info until the next time.

> I think there is a tool to power cycle a port on a hub available. I
> couldn't find it with some quick searching, but if I find it, I'll
> follow up with the URL.
Thanks.
> 
> JE

uwe