OK, I figured out that I'm supposed to mail stuff from /var/log: Using this command (the time is of course <= the time that enter was pressed):
16-Tue-16-45-35 ~# SANE_DEBUG_HPOJ=255 scanimage -v -y 279.4 --mode lineart --resolution 300 --batch-scan=yes --batch=aaa--%02d--line300.pnm Here are some logs: lpr.log: Nov 16 16:45:47 debian ptal-mlcd: ERROR at ExMgr.cpp:3209, dev=<mlc:usb:OfficeJet_6100_Series@%001%012>, pid=31725, e=19, t=1100648747 llioSubprocess: llioRead returns -19, expected=6! Nov 16 16:45:47 debian ptal-mlcd: ERROR at ExMgr.cpp:2820, dev=<mlc:usb:OfficeJet_6100_Series@%001%012>, pid=4001, e=11, t=1100648747 llioService: fdRead returns 0, expected=6! Nov 16 16:45:47 debian ptal-mlcd: ERROR at ExMgr.cpp:871, dev=<mlc:usb:OfficeJet_6100_Series@%001%012>, pid=4001, e=11, t=1100648747 exClose(reason=0x0010) Nov 16 16:46:20 debian ptal-mlcd: SYSLOG at /home/msp/src/debian/hpoj/hpoj-0.91/mlcd/ExMgr.h:646, dev=<mlc:usb:OfficeJet_6100_Series@%001%013>, pid=4001, e=19, t=1100648780 ptal-mlcd successfully activated, mode=1284.4. messages: Nov 16 16:45:46 debian kernel: usbdevfs: USBDEVFS_BULK failed dev 12 ep 0x83 len 6 ret -110 Nov 16 16:45:46 debian kernel: usbdevfs: USBDEVFS_BULK failed dev 12 ep 0x83 len 6 ret -110 Nov 16 16:45:46 debian kernel: usb.c: USB disconnect on device 12 Nov 16 16:45:57 debian kernel: hub.c: USB new device connect on bus1/2, assigned device number 13 Nov 16 16:45:57 debian kernel: usb.c: USB device 13 (vend/prod 0x3f0/0x2d11) is not claimed by any active driver. Nov 16 16:46:00 debian usb.agent[2493]: printer: blacklisted Nov 16 16:46:20 debian ptal-mlcd: SYSLOG at /home/msp/src/debian/hpoj/hpoj-0.91/mlcd/ExMgr.h:646, dev=<mlc:usb:OfficeJet_6100_Series@%001%013>, pid=4001, e=19, t=1100648780 ptal-mlcd successfully activated, mode=1284.4. syslog: Nov 16 16:45:46 debian kernel: usbdevfs: USBDEVFS_BULK failed dev 12 ep 0x83 len 6 ret -110 Nov 16 16:45:46 debian kernel: usbdevfs: USBDEVFS_BULK failed dev 12 ep 0x83 len 6 ret -110 Nov 16 16:45:46 debian kernel: usb.c: USB disconnect on device 12 Nov 16 16:45:47 debian ptal-mlcd: ERROR at ExMgr.cpp:3209, dev=<mlc:usb:OfficeJet_6100_Series@%001%012>, pid=31725, e=19, t=1100648747 llioSubprocess: llioRead returns -19, expected=6! Nov 16 16:45:47 debian ptal-mlcd: ERROR at ExMgr.cpp:2820, dev=<mlc:usb:OfficeJet_6100_Series@%001%012>, pid=4001, e=11, t=1100648747 llioService: fdRead returns 0, expected=6! Nov 16 16:45:47 debian ptal-mlcd: ERROR at ExMgr.cpp:871, dev=<mlc:usb:OfficeJet_6100_Series@%001%012>, pid=4001, e=11, t=1100648747 exClose(reason=0x0010) Nov 16 16:45:57 debian kernel: hub.c: USB new device connect on bus1/2, assigned device number 13 Nov 16 16:45:57 debian kernel: usb.c: USB device 13 (vend/prod 0x3f0/0x2d11) is not claimed by any active driver. Nov 16 16:46:00 debian usb.agent[2493]: printer: blacklisted Nov 16 16:46:20 debian ptal-mlcd: SYSLOG at /home/msp/src/debian/hpoj/hpoj-0.91/mlcd/ExMgr.h:646, dev=<mlc:usb:OfficeJet_6100_Series@%001%013>, pid=4001, e=19, t=1100648780 ptal-mlcd successfully activated, mode=1284.4. user.log: Nov 16 16:46:00 debian usb.agent[2493]: printer: blacklisted kern.log: Nov 16 16:45:46 debian kernel: usbdevfs: USBDEVFS_BULK failed dev 12 ep 0x83 len 6 ret -110 Nov 16 16:45:46 debian kernel: usbdevfs: USBDEVFS_BULK failed dev 12 ep 0x83 len 6 ret -110 Nov 16 16:45:46 debian kernel: usb.c: USB disconnect on device 12 Nov 16 16:45:57 debian kernel: hub.c: USB new device connect on bus1/2, assigned device number 13 Nov 16 16:45:57 debian kernel: usb.c: USB device 13 (vend/prod 0x3f0/0x2d11) is not claimed by any active driver. auth.log (probably not relevant): Nov 16 16:45:01 debian CRON[2462]: (pam_unix) session opened for user root by (uid=0) Nov 16 16:45:01 debian CRON[2462]: (pam_unix) session closed for user root Nov 16 16:53:01 debian CRON[2658]: (pam_unix) session opened for user mail by (uid=0) Nov 16 16:53:01 debian CRON[2658]: (pam_unix) session closed for user mail Nov 16 16:55:01 debian CRON[2687]: (pam_unix) session opened for user root by (uid=0) Nov 16 16:55:01 debian CRON[2687]: (pam_unix) session closed for user root Hope this helps.
