Olaf, it's been a while, and I was busy solving more pressing problems. Now I'm back again to tackle this scanning issue.
On Sunday, 2019-12-15 16:41:01 +0900, you wrote: > ... > > I know about the existence of environment variable "SANE_DEBUG_BJNP" but > > have no idea what value to set it to to provide reasonable information. > > Could someone please guide me? > > Just set it to 127 if you don't know. The developers should be able to > slice and dice the result as needed. First thing I did was digging out my old laptop, on which Windows Vista, Adobe Acrobat Distiller, and the original Canon driver is installed, and did a few scans from the ADF just to make sure this is not a problem of an aging scanner. Next I cloned the Git repository in order to be able to freely change between various versions to find one which is working for me by compil- ing "sane-backends" myself. For a first test I checked out changeset 1942c5fd32a7 authored by Olaf Meeuwissen <[email protected]> at 2020-01-26 10:56:34 +0000. However while running ./autogen.sh && ./configure I got two warnings which I do not quite understand: configure: WARNING: Group uucp does not exist on this system. configure: WARNING: Locking feature will be disabled. The group does in fact exist: $ ls -l /etc/group /etc/gshadow -rw-r--r-- 1 root root 755 2020-01-14 10:03 /etc/group -r--r----- 1 root root 622 2020-01-14 10:03 /etc/gshadow $ grep uucp /etc/group /etc/gshadow /etc/group:uucp:x:14:uucp /etc/gshadow:uucp:::uucp $ So what does that mean? Do "configure" and "make" want myself to be a memer of group "uucp" while I'm just compiling the stuff? For the time being I'll go on with the compilation, will do $ SANE_DEBUG_BJNP=127 scanimage ... and will report back how it went. Sincerely, Rainer
