Scanimage Fails at 1200 dpi with sane_read I/O error

[R. G. Newbury]

I've been using scanimage for years with an HP3055 MFP which is network 
attached. Suddenly, it stopped working at --resolution=1200. The only 
thing I can remember upgrading was/is the kernel, but even going back to 
the 3.7.3-101.fc17 kernel and downgrading everything does not help.

Most intrigueingly, scanning works at resolution=600.
Some details:

scanimage -d$hpaio -A

All options specific to device 
`hpaio:/net/HP_LaserJet_3055?ip=192.168.1.12':
   Scan mode:
     --mode Lineart|Gray|Color [Color]
         Selects the scan mode (e.g., lineart, monochrome, or color).
     --resolution 75|100|150|200|300|600|1200dpi [75]
         Sets the resolution of the scanned image.

  But scanning results in this:
Scanning 1 pages, incrementing by 1, numbering from 701
Scanning page 701
scanimage: sane_read: Error during device I/O
Scanned page 701. (scanner status = 9)

And the MFP hangs in a perpetual'Cancelling Scan'.

And this used to work. I have 700 pages already scanned at 1200 dpi...

Anyone have any ideas on how to debug this?





-- 
              R. Geoffrey Newbury			
            Mandamus Publishing Inc.
       Suite 106, 150 Lakeshore Road West
          Mississauga, Ontario, L5H 3R2

               www.mandamus.ca

         t416-479-0930 f905-271-1638
               rgn at mandamus.ca