Bug 439193

Many thanks for the report.

Of course If I knew false positives I would have remoced them.
"Unfortunately" all my scanner devices are supported ;-)

The content of the libsane.rules file comes from SANE upstream.
It lists all known devices by SANE upstream.
For the particular device, see
http://www.sane-project.org/cgi-bin/driver.pl?manu=&model=&bus=any&v=08ff&p=2580

For me it seems to be wrong to have "known but unsupported" devices
listed in the libsane.rules file because it seems not to make sense
to set owner, group, and permissions for devices which are not
supported by SANE which would even cause conflicts if such a
device is supported by whatever other software.

I will remove those devices from libsane.rules where the USB IDs are
listed in /usr/share/sane/descriptions/unsupported.desc
which lists the "known but unsupported" devices.

This sounds good to me -- thanks!

Be even more strict now:
Avoid false positives (e.g. unsupported) and problematic 
models in /etc/udev/rules.d/55-libsane.rules by having 
all model entries disabled where the support status is 
not "complete" or "good", i.e. when it is not listed
in /etc/udev/rules.d/56-sane-backends-autoconfig.rules

Fixed package submitted to FACTORY/STABLE.
I cannot set "Fixed in Milestone" appropriately
because there is nothing after "Beta4".

Having only models in /etc/udev/rules.d/55-libsane.rules which 
are in /etc/udev/rules.d/56-sane-backends-autoconfig.rules
is too restrictive because because libsane.rules disables
USB autosuspend in the kernel which is needed as safe default 
for any scanner regardless of its support status.

The only valid exception are really unsupported models.
Therefore the scanner database is now created directly
in the spec file with the file name "scanner.database"
so that the scanner database can also be used to determine
the "unsupported" models to be disabled in libsane.rules
Right now I submitted a new fixed package to FACTORY/STABLE.

There are lines commented out both in 55-libsane.rules
and in 70-scanner.fdi for models which are actually supported
because of an unexpeced side-effect of how the solution
of this bug is implemented, see
https://bugzilla.novell.com/show_bug.cgi?id=438867#c62
and
https://bugzilla.novell.com/show_bug.cgi?id=438867#c65

It happens when there is a status "unsupported" entry
for a backend for a model which is actually supported
by another backend, for examples see in the YaST
scanner database entries like
-------------------------------------------------------------
  $[ "package":"sane-backends",
     "backend":"snapscan",
     "manufacturer":"Epson",
     "model":"Perfection 1670",
     "firmware":"required",
     "interface":"USB",
     "usbid":"0x04b8:0x011f",
     "status":"good",
     "comment":""
  ],
...
  $[ "package":"iscan-free",
     "backend":"epkowa",
     "manufacturer":"Epson",
     "model":"Perfection 1670",
     "firmware":"",
     "interface":"USB",
     "usbid":"0x04b8:0x011f",
     "status":"unsupported",
     "comment":"supported by the snapscan backend"
  ],
-------------------------------------------------------------

Hi!

Would't it make more sense then to add the newly discovered usb devices, like the usb fingerprint reader metioned above, instead of removing device froma list that has worked rather nicely in the 11.0 release? I suppose there is a proper way to collect the needed data. Does OpenSuse have a webinterface to proide such data by users?

Cheers Juergen

Created attachment 265567 [details]
List of falsely found as "unsupported" models

To reproduce the list, run

/usr/lib/YaST2/bin/create_scanner_database >scanner.database

and then (on one single long line)

for USBID in $( grep '||[^|]*|0x[0-9A-Fa-f][0-9A-Fa-f]*:0x[0-9A-Fa-f][0-9A-Fa-f]*|unsupported' scanner.database | cut -s -d '|' -f 7 | sort -f -u ) ; do grep -o "|$USBID|.*|" scanner.database | egrep -q 'complete|good|basic|minimal|untested' && { grep "$USBID" scanner.database ; echo ; } ; done

Fixed for next openSUSE version and submitted to FACTORY/STABLE
(but there is no Target Milestone "FACTORY" or "openSUSE 11.2").