Can't use Samsung SCX-4726 as Scanner

English Hardware
1

Hi, I connected a Samsung SCX-4726 via USP and installed the Samsung (HP) Drivers. Printing works fine. But it does not work as scanner. I can use choose the printer in skanlite but then scanning terminates with an ‘I/O Error’ . Also scanning from the printer does not work, it says ‘no connection’. Any hint appreciated. Thanks

2

I assume that you meant USB connected?

Printing works fine. But it does not work as scanner. I can use choose the printer in skanlite but then scanning terminates with an ‘I/O Error’

It would be helpful to post the exact error encountered. Run skanlite from a terminal and capture the relevant output.

3

Indeed

It would be helpful to post the exact error encountered. Run skanlite from a terminal and capture the relevant output.

Here is the complete skanlite output


"deviceOption value="
"xerox_mfp:libusb:003:002"
"niash:libusb:001:003"
("image/bmp", "image/jp2", "image/jpeg", "image/png", "image/tiff", "image/vnd.microsoft.icon", "image/vnd.wap.wbmp", "image/webp", "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")
"xerox_mfp:libusb:003:002"
"niash:libusb:001:003"
"xerox_mfp:libusb:003:002"
"niash:libusb:001:003"
"xerox_mfp:libusb:003:002"
"niash:libusb:001:003"
"xerox_mfp:libusb:003:002"
"niash:libusb:001:003"
"xerox_mfp:libusb:003:002"
"xerox_mfp:libusb:003:002"
"niash:libusb:001:003"
sane_start= Error during device I/O
4

If you replug the USB device and attempt to scan within a few seconds do you still get the same error?

5

There is a common USB 3.0 issue which might be at play here. If you have USB 2.0 ports available you could try using them instead.

Alternatively, try running skanlite from a terminal like this…

SANE_USB_WORKAROUND=1 skanlite

References…
https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1741977

https://help.ubuntu.com/community/sane_Troubleshooting#The_USB3_Issue

6

That did it. Thank you. Great.

7

Glad to read that did the trick. Might help others who come searching. :slight_smile:

FWIW, also mentioned here…

https://wiki.archlinux.org/index.php/SANE#Communication_via_xHCI_not_working_(older_scanner_models)