[Hplip-help] Can't scan with psc 2110 "Device busy"

[Knut G. <knu...@ha...>]

Hello,
I hope this is the right place and the right way to ask for help.
My system is ubuntu 5.10, HPLIP is installed and came with the
distribution.
I can print without problem with my hp psc 2110 all-in-one but cannot
scan. xsane delivers the same error message as the scanimage-command
below (open of device hpaio....)

Some outputs from terminal-commands:

eli@noname:~$ scanimage
-d'hpaio:/usb/PSC_2100_Series?serial=MY27UC37920F' -T
scanimage: open of device hpaio:/usb/PSC_2100_Series?serial=MY27UC37920F
failed: Device busy

eli@noname:~$ scanimage --help
Usage: scanimage [OPTION]...

Start image acquisition on a scanner device and write PNM image data to
standard output.

-d, --device-name=DEVICE   use a given scanner device (e.g.
hp:/dev/scanner)
    --format=pnm|tiff      file format of output file
-i, --icc-profile=PROFILE  include this ICC profile into TIFF file
-L, --list-devices         show available scanner devices
-f, --formatted-device-list=FORMAT similar to -L, but the FORMAT of the
output
                           can be specified: %d (device name), %v
(vendor),
                           %m (model), %t (type), and %i (index number)
-b, --batch[=FORMAT]       working in batch mode, FORMAT is `out%d.pnm'
or
                           `out%d.tif' by default depending on --format
    --batch-start=#        page number to start naming files with
    --batch-count=#        how many pages to scan in batch mode
    --batch-increment=#    increase number in filename by an amount of #
    --batch-double         increment page number by two for 2sided
originals
                           being scanned in a single sided scanner
    --batch-prompt         ask for pressing a key before scanning a page
    --accept-md5-only      only accept authorization requests using md5
-n, --dont-scan            only set options, don't actually scan
-T, --test                 test backend thoroughly
-h, --help                 display this help message and exit
-v, --verbose              give even more status messages
-V, --version              print version information
scanimage: open of device hpaio:/usb/PSC_2100_Series?serial=MY27UC37920F
failed: Device busy
Type ``scanimage --help -d DEVICE'' to get list of all options for
DEVICE.

List of available devices:
    hpaio:/usb/PSC_2100_Series?serial=MY27UC37920F
eli@noname:~$ sudo sane-find-scanner

  # sane-find-scanner will now attempt to detect your scanner. If the
  # result is different from what you expected, first make sure your
  # scanner is powered up and properly connected to your computer.

  # No SCSI scanners found. If you expected something different, make
sure that
  # you have loaded a SCSI driver for your SCSI adapter.
  # Also you need support for SCSI Generic (sg) in your operating
system.
  # If using Linux, try "modprobe sg".

found USB scanner (vendor=0x03f0 [Hewlett-Packard], product=0x2811 [PSC
2100 Series]) at libusb:001:002
  # Your USB scanner was (probably) detected. It may or may not be
supported by
  # SANE. Try scanimage -L and read the backend's manpage.

  # Not checking for parallel port scanners.

  # Most Scanners connected to the parallel port or other proprietary
ports
  # can't be detected by this program.


I have searched the old HPLIP-help forum and found a few threads with
very similar problems 

http://sourceforge.net/forum/message.php?msg_id=3356303
http://sourceforge.net/forum/message.php?msg_id=3346548
http://sourceforge.net/forum/message.php?msg_id=3219032

but no solution.

Unfortunately I am completely new to Linux. Please be patient and
explain with very much detail if I am to test or lookup something.

Kind regards
Knut