Re: [gentoo-user] scanner problem

[Jack <ostroffjh@users.sourceforge.net>]

On 2018.07.17 02:38, Philip Webb wrote:
> 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 ?

Does the scanner currently show up if you do "lsusb" ?
Does dmesg say anything when you plug the scanner in?
Is it possible that the driver needs updating to deal with a newer  
kernel?

Jack