Libusb possibly causing non-scan with some scanners

[Dean Loros]

Some scanners are not working in Feisty. Software goes thru the motions, but will not operate the scanner. Result is a "black" scan. A note from sane-developer-list:

Message: 1
Date: Sat, 31 Mar 2007 15:02:27 +0200
From: JKD <email address hidden>
Subject: Re: [sane-devel] LIde 20 scanner & kernels newer than
 2.6.20-9
To: <email address hidden>
Message-ID: <email address hidden>
Content-Type: text/plain; charset=us-ascii

El Fri, 30 de Mar de 2007, a las 06:52:06PM -0700, Dean Loros dijo:
> > I, along with several Ubuntu users (Feisty Fawn testing) have had a
> > problem with sane & the USB_SUSPEND kernel option. Please take a look at
> > one of the reported bugs at:
> > https://launchpad.net/ubuntu/+source/sane-backends/+bug/85488
> >
> > I would really like a working scanner & this seems to be a problem
> > between suspend for laptops & USB issues with desktop units.
> >

I'm using backend with no problems in kernel 2.6.20 disabling such
option. Most backends use libusb to establish communitation between device
and PC. Libusb doesn't provide functions to check that condition. May be
I'm wrong but If it's not a kernel problem (USB_SUSPEND is yet experimental)
I think that problem must be fixed in libusb libraries.

Jonathan Bravo

Please see the above bug in the indented text for more info.
Dean Loros

[Daniel T Chen (crimsun)]

Is this symptom still reproducible in 8.10 beta?

[Dean Loros (autocrosser)]

I have not seen this bug much after I moved to Hardy Testing--it disappeared soon after--I would consider the bug closed.

[Dimitrios Symeonidis (azimout)]

This bug report is being closed due to your last comment regarding this being fixed with an update. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status . Thank you again for taking the time to report this bug and helping to make Ubuntu better. Feel free to submit any future bugs you may find.