Try another USB -Port, (no USB 3 whenever possible), check USB cables,
check if the file 'iscan' is in 'etc/sane.d/dll.d/
content:
'epkowa'
edit '/etc/sane.d/dll.conf'
comment all entries by adding '#' in front of every line
add 'epkowa' (uncommented !)
edit '/etc/sane.d/epkowa.conf'
comment the lines
'usb' and 'scsi'
uncomment the line
'#usb 0x04b8 0x0110' by removing the '#' and correct ProductId (0x014a)
looks like 'usb 0x04b8 0x014a' then.
spend some candles and reboot ...
Finally: Are you really sure the scanner is working ?
Try another USB -Port, (no USB 3 whenever possible), check USB cables,
check if the file 'iscan' is in 'etc/sane.d/dll.d/
content:
'epkowa'
edit '/etc/sane. d/dll.conf'
comment all entries by adding '#' in front of every line
add 'epkowa' (uncommented !)
edit '/etc/sane. d/epkowa. conf'
comment the lines
'usb' and 'scsi'
uncomment the line
'#usb 0x04b8 0x0110' by removing the '#' and correct ProductId (0x014a)
looks like 'usb 0x04b8 0x014a' then.
spend some candles and reboot ...
Finally: Are you really sure the scanner is working ?