Package: libsane Version: 1.0.27-3.2
regarding this scanner (and may be others, too?) lsusb .... Bus 004 Device 008: ID 04b8:0142 Seiko Epson Corp. GT-F730 [GT-S630/Perfection V33/V330 Photo] I installed this scanner in 2016 under jessie, operated it under sid, but after upgrade to buster, I get Fehler beim Öffnen des Gerätes `epkowa:interpreter:004:003' (error opening device ....) tried this (delete ~/.sane) , but no help https://bbs.archlinux.org/viewtopic.php?id=176756 ------------------- This scanner is not supported by sane as listed here http://www.sane-project.org/man/sane-epson2.5.html For first install back in 2016, I followed this instruction https://www.mogilowski.net/lang/en-us/2014/05/14/install-epson-perfection-v33-scanner-on-ubuntu-14-04/ .deb packages are supplied by the vendor: http://support.epson.net/linux/en/iscan.php?model=perfection-v330&version=1.0.0 It boils down to dpkg --install iscan-perfection-v330-bundle-1.0.0.x64.deb/data/iscan-data_1.36.0-1_all.deb dpkg --install iscan-perfection-v330-bundle-1.0.0.x64.deb/core/iscan_2.30.1-1~usb0.1.ltdl7_amd64.deb dpkg --install iscan-perfection-v330-bundle-1.0.0.x64.deb/plugins/esci-interpreter-perfection-v330_0.2.0-1_amd64.deb So I purged these packages and reinstalled them. looks like one of those has problems matching ‘/lib/udev/rules.d/60-libsane.rules’ ----8<--------------------------- root@wjrws3:~/epson$ dpkg --install iscan-perfection-v330-bundle-1.0.0.x64.deb/data/iscan-data_1.36.0-1_all.deb Selecting previously unselected package iscan-data. (Reading database ... 484351 files and directories currently installed.) Preparing to unpack .../iscan-data_1.36.0-1_all.deb ... Unpacking iscan-data (1.36.0-1) ... Setting up iscan-data (1.36.0-1) ... expr: syntax error: missing argument after ‘-’ tail: invalid number of lines: ‘/lib/udev/rules.d/60-libsane.rules’ Processing triggers for udev (241-7~deb10u2) ... ----8<--------------------------- After that, I still can't access `epkowa:interpreter:004:003' By some halfway educated guess, I found that file /lib/udev/rules.d/60-iscan.rules is 2986 bytes long in my unoperable fresh install, but 19059 bytes long in my old working sid snapshot So I tried to copy the file over as a crude hack and - voila - it works. I can scan, so status is "works for me". I may assume that the epson package has a crude compatibility test (just by silly line count?) against /lib/udev/rules.d/60-libsane.rules before they generate (supposedly propriate?) /lib/udev/rules.d/60-iscan.rules There may be some reason while they do this. Simply copying over the file just skips this test without knowing what happens. It looks like it worked for me by luck, but may break in the future. It also may break for others, particularly for new installations. So, I see that this is not the most elegant solution. imho preferrable solution in falling preference - support by sane - integration of the epson driver into debian and consistent maintenance - updated driver from epson - change in libsane so that the contingency is not broken - just keep this crude solution as a record here, in the hope that google & friends may find it regards -- Wolfgang Rosner
