[gentoo-user] scanner problem

[Philip Webb]

My scanner -- Epson Perfection V550 Photo -- is suddenly not detected :
when I enter 'xsane' (via the menu or Alt-F2), it says "no devices available".

I last used it without any problem 180626.
Since then, I've updated my kernel & some other pkgs.
I've checked the USB physical connection ; the scanner 'ready' light is on.
I've remerged 'xsane' & 'sane-backends' & rebooted.

Following my notes, I've done :

  root:500 ~> sane-find-scanner
  ...
  found USB scanner (vendor=0x04b8 [EPSON], product=0x013b [EPSON Scanner]) at libusb:001:004
  # Your USB scanner was (probably) detected.
  # It may or may not be supported by SANE.
  # Try scanimage -L and read the backend's manpage.
root:501 ~> scanimage -L
device `epkowa:interpreter:001:004' is a Epson Perfection V550 Photo flatbed scanner
  
  The first time I ran these commands (I don't remember which),
  the scanner itself made the noises it usually does when starting.

  This model needs a driver which is not included in 'sane-backends'
  & which I downloaded from Nvidia & installed when I got the scanner 2017.
  The 'epkowa' driver is installed :

  root:505 ~> locate epkowa
    /etc/sane.d/epkowa.conf
    /usr/lib64/sane/libsane-epkowa.la
    /usr/lib64/sane/libsane-epkowa.so.1
    /usr/lib64/sane/libsane-epkowa.so.1.0.15
    /usr/lib64/sane/archive/libsane-epkowa.la
    /usr/lib64/sane/archive/libsane-epkowa.so.1
    /usr/lib64/sane/archive/libsane-epkowa.so.1.0.15

My user is a member of the 'scanner' group :

  scanner:x:104:purslow

I am puzzled : does anyone have a suggestion what to do next ?

-- 
========================,,============================================
SUPPORT     ___________//___,   Philip Webb
ELECTRIC   /] [] [] [] [] []|   Cities Centre, University of Toronto
TRANSIT    `-O----------O---'   purslowatchassdotutorontodotca