[sane-devel] Second draft of Scanner HOWTO for TLDP

[Jochen Eisinger]

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Hi,

some remarks on the Parallel Port sections:

Interface Types -> Parallel Port Devices:
    Jonathan's page is really very outdated for some time now. It's
    better (also for the other scanner types) to check the supported
    scanners list on sane.informatik.uni-freiburg.de/cgi-bin/driver.pl

Kernel Support -> Parallel Port Scanners:
    Not all scanner drivers need kernel level support. Some are using
    directio (this needs to be enabled in configure) You're also mixing
    dmesg and lsmod a little (lsmod is in bold, but a dmesg output is
    shown). You could also note that you might have to enabled certain
    transfer modes in the BIOS

Making and Accessing the Scanner Devices -> Manually creating ...
    crw-------    1 root     root      99,   0 Jun 24 13:47 parport0
    crw-------    1 root     root      99,   1 Jun 24 13:47 parport1
    crw-------    1 root     root      99,   2 Jun 24 13:47 parport2
    crw-------    1 root     root      99,   3 Jun 24 13:47 parport3
    crw-r-----    1 root     root       1,   4 Jan  1  1970 port

    if a scanner doesn't use the kernel drivers, it normally needs the
    port number as device name.

Making and... -> Groups and Permissions:
    If a scanner doesn't use the kernel drivers, you have to use the
    sane daemon (saned) to let non-root users access the scanner

Configuring SANE:
    Parallel port backends often need libieee1284 installed or directio
    enabled.
 
    You could also stress the point a little more that an old SANE
    installation is the reason #1 why self compiled SANE version don't
    work (as you'd expect)

    The network setup is missing the (x)inetd setup and doesn't mention
    the possibility of using passwords

Testing your scanner:
    There's an option --test for scanimage

that's it :)

regards
-- jochen

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