yes- i can confirm that current fujitsu backend ignores the return value from the hardware status query, so a front-end has no way of knowing there was a problem. I'll commit a patch to current cvs asap.
allan On Sun, Apr 12, 2009 at 3:23 PM, m. allan noah <kitno455 at gmail.com> wrote: > Well, I wrote the fujitsu backend, so I feel justified in saying that > is a bug :) What version of sane-backends are you using? > > allan > > On Sun, Apr 12, 2009 at 3:04 PM, Florian Lohoff <flo at rfc822.org> wrote: >> On Sun, Apr 12, 2009 at 09:11:16AM +0200, Florian Lohoff wrote: >>> Hi, >>> i am writing my own little scanner button handling which works without the >>> problem. >>> I am trying to attach the scanner (via USB) to a headles system. So in the >>> end i 'd like to start the scanner button program via udev and let it >>> die once the user turns off the scanner. >>> >>> I would have expected sane_control_option to return an error message once >>> the scanner gets turned off (disconnected) but it still returns >>> 0 aka SANE_STATUS_GOOD which is astonishing.. >>> >>> Whats the proposed way to detect a disconnected scanner? Should i reopen >>> the scanner >>> on every 1 sec polling interval?!? >> >> As i got a hint that the backend would be an important point - The backend >> in this case is the fujitsu - fi 4120C on USB >> >> Flo >> -- >> Florian Lohoff ? ? ? ? ? ? ? ? ?flo at rfc822.org ? ? ? ? ? ? +49-171-2280134 >> ? ? ? ?Those who would give up a little freedom to get a little >> ? ? ? ? ?security shall soon have neither - Benjamin Franklin >> >> -----BEGIN PGP SIGNATURE----- >> Version: GnuPG v1.4.9 (GNU/Linux) >> >> iD8DBQFJ4js/Uaz2rXW+gJcRAv8DAKDWG48RQ2j3ZfYsALoKpDKvmjaG4QCg0/y8 >> 9a3YGNziQ2H2fiG60nrGQhk= >> =TjxZ >> -----END PGP SIGNATURE----- >> >> > > > > -- > "The truth is an offense, but not a sin" > -- "The truth is an offense, but not a sin"
