Public bug reported:
I own a Mustek ScanMaster 3830 scanner. It worked fine, out-of-the-box,
with both Dapper and Edgy. However, it stopped working in Feisty. It
just returns following message:
scanimage: open of device sm3840:libusb:001:004 failed: Access to
resource has been denied
Further investigation revealed, that this family of scanners is not
supported by the Sane project. Instead, someone reverse-engineered a
backend and prepared a patch for sane-backends-1.0.15. This is the
version found in Dapper and Edgy and it works great.
However, Feisty uses sane-backends-1.0.18. The apropriate library file,
/usr/lib/sane/libsane-sm3840.so.1-1.0.18 is present, but it fails to do
its work. After some experimenting, I just downloaded the 1.0.15 version
of sane-backends, applied apropriate patch and compiled it. Then I just
copied libsane-sm3840.so.1-1.0.15 and changed the symbolic links in
/usr/lib/sane to point to it. It worked like a charm and my scanner is
functional again.
My guess is that the library present in sane-backends-1.0.18 is either
just a dummy placeholder, or contains a bug that prevents it from doing
its job.
** Affects: sane-backends (Ubuntu)
Importance: Undecided
Status: Unconfirmed
--
lost support for sm3840 family scanners
https://bugs.launchpad.net/bugs/115898
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