I am running on an up to date Fedora Core 3 system, and have installed sane-backends 1.0.15-1.4 and xsane 0.92-13 via synaptic. Over the last 18 months, I have periodically tried to get my HP 7450C scanner working under SANE, but was never completely successful. I am now trying again, and am getting similar problems to those I have had before.
The problems I have seen so far: 1. hpusbscsi vs libusb. sane-find-scanner finds the scanner at libusb:002:004. The hardware browser and scanimage -L in root mode finds `avision:/dev/sg2' is a Hewlett-Packard ScanJet 7400c flatbed scanner. In the past, I bypassed this problem by removing the hpusbscsi module and putting something about libusb into fstab. However, I was never able to stop the system from loading hpusbscsi whenever I rebooted and I don't remember seeing an answer to my queries about this. Is it still necessary to remove hpusbscsi? Is there a way to fix this problem so that the fix will survive rebooting? Is there a central place to find the procedure necessary to do this, or do I have to search through old posts to the mailing list? 2. User mode vs root mode xsane wants to run in user mode, but returns "no device found" or gets a segmentation fault when I try it. I need to fix the permissions. In root mode xsane hangs while it is scanning for devices. http://www.sane-project.org/README.linux hints at how to permanently change permissions by changing "libsane.usermap" and "libusbscanner", and there is more info in the libsane.usermap file. There was no entry in libsane.usermap for the 7400 or 7450C, so I took the vender and product from sane-find-scanner, and added # Hewlett-Packard|ScanJet 7450C libusbscanner 0x0003 0x03f0 0x0801 0x0000 0x0000 0x00 0x00 Please add this entry in the next release of SANE. I have not added my userid to the scanner group and tested whether this takes care of the permissions problem. I'll send a follow-up when I do, but I might need a fix for the hpusbscsi problem first.
