Yves Duret wrote: > > s...@michael.mailshell.com writes: > > > I have a Cannon FS2710: > > > > [root@corwin@mir scsi]# cat /proc/scsi/scsi > > Attached devices: > > Host: scsi0 Channel: 00 Id: 02 Lun: 00 > > Vendor: CANON Model: IX-27025E Rev: 1.13 > > Type: Scanner ANSI SCSI revision: 02 > > Host: scsi1 Channel: 00 Id: 00 Lun: 00 > > Vendor: RICOH Model: CD-R/RW MP7040A Rev: 1.1k > > Type: CD-ROM ANSI SCSI revision: 02 > > > > This dir has nothing in it: /dev/scsi/host0/bus0/target2/lun0
Yves, Try 'modprobe sg' and that directory should contain "generic" which should be a char dev, major 21 and minor 0. In the pre-devfs world that would have been known as /dev/sg0 . A directory like /dev/scsi/host0/bus0/target2/lun0 indicates that a SCSI upper level driver that will register that device has _not_ been loaded. The sg driver registers all SCSI devices (sr_mod registers only cdroms/dvds, etc). Now I changed the Linux scanning code in SANE 1.0.5 but unfortunately I didn't foresee a major distribution using devfs so soon. The scan algorithm does not probe down the /dev/scsi/host* trees. So if devfsd (i.e. the devfs daemon) is running and /etc/devfsd.conf is properly configured then /dev/sg0 should be a symbolic link to /dev/scsi/host0/bus0/target2/lun0/generic . That will _not_ happen until the sg module is loaded. Hence there is a "chicken and the egg" problem here. Previously trying to open /dev/sg0 had the side effect of loading the sg module if it was not already loaded. Now that symbolic link doesn't exist until sg is loaded. > > > > It worked fine until I reinstalled Mandrake 8.1. Now > > sane-find-scanner no longer detects it. I did have it running > > with Mdk8.0 under the same kernel... I have no clue how to > > make entries in /dev (other than sym links), and I thought > > the devfs junk was suppose to do that transparently. > > and if you boot without devfs (devfs=nomount at lilo/grub prompt) with your > 8.1 ? Apologies if I have indented the above incorrectly. Devfs is not junk but unfortunately is does not have a separate category for scanners (it does have directories for disks, cdroms and tapes). This makes scanning a little more challenging. Yves, I was told Mandrake 8.1 might contain my scsimon driver which would deliver hotplug alerts when any SCSI device was attached. Devices with a SCSI type of SCANNER or PROCESSOR (for HP scanners) should load sg. Doug Gilbert
