Le 2020-11-04 19:47, Thierry HUCHARD a écrit :
Le 2020-11-04 19:07, Marco Fioretti a écrit :
Greetings,

I just received an Epson XP-4100 multifunction printer, and connected
it to an Ubuntu 20.04 desktop, with all updates installed, as well as
the packages sane and sane-utils

Printing works fine, scanning does not.  lsusb, scanimage and avahi
browse do list the scanner (see outputs below), and its web interface
of the scanner is reachable at http://127.0.0.1:60000/

However:

* the Epson imagescan package does not find any device.

* the web interface at Product Status -> Network says

                Device Name :
                EPSON309A2B

                Connection Status :
                Disable

and I can't find any way to enable it from there

* if I run scanimage I get "scanimage: sane_start: Invalid argument"
(see details below)
* skanlite sees the scanner, but cannot actually scan: it just makes
it click for a few minutes, during which the scanner display says
"Scanning the original", then aborts, just like scanimage (see its
output below)

I have configured and used lots of scanners under Linux for years
including shell scripts to scan lots of documents, but honestly I have
no idea what to do how or check next to make scanning work this
time... Any advice is very welcome

Thanks in advance,
Marco

COMMAND OUTPUTS:

#> lsusb...
Bus 001 Device 005: ID 04b8:1137 Seiko Epson Corp. XP-4100 Series

#> scanimage -L
device `escl:http://127.0.0.1:60000' is a ESCL XP-4100 Series
[583642553130313920] flatbed scanner

#> avahi-browse -rt _uscan._tcp
+     lo IPv4 XP-4100 Series [583642553130313920]
_uscan._tcp          local
=     lo IPv4 XP-4100 Series [583642553130313920]
_uscan._tcp          local
   hostname = [polaris.local]
   address = [127.0.0.1]
   port = [60000]
   txt = ["txtvers=1" "vers=2.63" "rs=eSCL" "ty=EPSON XP-4100 Series"
"pdl=application/pdf,image/jpeg" "cs=binary,grayscale,color"
"duplex=F" "adminurl=http://127.0.0.1:60000/PRESENTATION/BONJOUR";
"UUID=cfe92100-67c4-11d4-a45f-381a52309a2b" "note="
"representation=http://127.0.0.1:60000/icon.png";]

#> scanimage -d "escl:http://127.0.0.1:60000"; -p --format=tiff
--mode=Color --resolution=1200dpi > gigio.tiff
Capability : [(null)]
Capability : [image/jpeg]
scanimage: rounded value of resolution from 1200 to 1200
scanimage: rounded value of br-x from 0 to 0
scanimage: rounded value of br-y from 0 to 0
scanimage: sane_start: Invalid argument

#> skanlite
"deviceOption value="
("image/bmp", "image/jpeg", "image/png", "image/tiff",
"image/vnd.microsoft.icon", "image/vnd.wap.wbmp", "image/webp",
"image/x-eps", "image/x-icns", "image/x-pcx", "image/x-pic",
"image/x-portable-bitmap", "image/x-portable-graymap",
"image/x-portable-pixmap", "image/x-rgb", "image/x-tga",
"image/x-xbitmap", "image/x-xpixmap")
"escl:http://127.0.0.1:60000";
"escl:http://127.0.0.1:60000";
Capability : [(null)]
Capability : [image/jpeg]
"escl:http://127.0.0.1:60000";
"escl:http://127.0.0.1:60000";
sane_start= Invalid argument

Hi

Update your sane version, this should solve the problem:

# sudo add-apt-repository ppa:sane-project/sane-git
# sudo apt-get update
# sudo apt install libsane libsane-common sane-utils

scanimage -d "escl:http://127.0.0.1:60000"; -p --format=tiff
--mode=Color --resolution=1200dpi > gigio.tiff
After update, can you send me the log :
SANE_DEBUG_ESCL=255 scanimage -T 2> toto.txt
Thierry

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