[sane-devel] Scanner failure when connected via USB3

Olaf Meeuwissen olaf.meeuwissen at avasys.jp
Tue Sep 23 22:57:47 UTC 2014

m. allan noah writes:

> Mike- when you get back to the machine, maybe you could make some
> logs. If we could see a usb log of what scanimage does and what
> vuescan does, we might be able to find a difference. The problem will
> be figuring out how to both reduce the volume of data the the bare
> minimum which reproduces the problem, and also doing exactly the same
> thing in both cases. I might be as simple as a 'scanimage --help'
> multiple times in a row, and starting/stopping vuescan multiple times.
> I'm not sure how to tell the kernel to enable usb logging, but I bet
> google will tell you :)

  $ sudo modprobe usbmon
  $ sudo wireshark

and selecting the right USB bus to capture traffic on.  The `usbmon#`
numbers match the bus numbers that `lsusb` outputs.

Hope that helps,
Olaf Meeuwissen, LPIC-2           FLOSS Engineer -- AVASYS CORPORATION
FSF Associate Member #1962               Help support software freedom

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