On Wed, 25 Sep 2013, Michael Hennebry wrote: > On Tue, 24 Sep 2013, Frank Cox wrote: > >> On Tue, 24 Sep 2013 17:57:12 -0500 (CDT) >> Michael Hennebry wrote: >> >>> What do I change to make it let me use xsane or hp-scan as myself? >> >> You need to set the permission on the scanner device to allow your username to >> use it, since it's apparently now set to allow root only. >> >> scanimage -L will tell you where it is. > > [root at localhost tmp]# scanimage -L > device `hpaio:/usb/Photosmart_C3100_series?serial=CN6ARC321S04KV' is a Hewlett-Packard Photosmart_C3100_series all-in-one > > That agrees with the output from hp-scan, but it does not seem to help. > What permissions do I change? > > root at localhost tmp]# find /dev -name 'Photo*' > [root at localhost tmp]# find /usb -name 'Photo*' > find: `/usb': No such file or directory > [root at localhost tmp]# locate Photosmart_C3100 > [root at localhost tmp]# This was done as root: > I used strace on hp-scan. > It used every "file" under /dev/bus/usb: > [root at localhost tmp]# ls -R /dev/bus/usb > /dev/bus/usb: > 001 002 003 004 005 > > /dev/bus/usb/001: > 001 006 > > /dev/bus/usb/002: > 001 > > /dev/bus/usb/003: > 001 002 > > /dev/bus/usb/004: > 001 > > /dev/bus/usb/005: > 001 > [root at localhost tmp]# I aso strace-d hp-scan as myself and got permission errors: [hennebry at localhost tmp]$ grep ermission trace2.txt | sort -u | grep usb open("/dev/bus/usb/001/001", O_RDWR) = -1 EACCES (Permission denied) open("/dev/bus/usb/001/006", O_RDWR) = -1 EACCES (Permission denied) open("/dev/bus/usb/002/001", O_RDWR) = -1 EACCES (Permission denied) open("/dev/bus/usb/003/001", O_RDWR) = -1 EACCES (Permission denied) open("/dev/bus/usb/003/002", O_RDWR) = -1 EACCES (Permission denied) open("/dev/bus/usb/004/001", O_RDWR) = -1 EACCES (Permission denied) open("/dev/bus/usb/005/001", O_RDWR) = -1 EACCES (Permission denied) [hennebry at localhost tmp]$ Changing the permissions on all of them seems a clunky thing to do. Also, I do not know whether such a change would survive a reboot. > For some reason, hp-scan also opened a lot of sane libraries, > mostly for brands other than HP. > hp-scan read "Photosmart C3180\n" a lot. -- Michael hennebry at web.cs.ndsu.NoDak.edu "On Monday, I'm gonna have to tell my kindergarten class, whom I teach not to run with scissors, that my fiance ran me through with a broadsword." -- Lily