Comment 167 for bug 1728012

Veron Rado (junket) wrote :

Bit of a breakthrough :)

Launching simple scan and xsane via the terminal with the USB3 workaround[1] environmental variable works:
 $ SANE_USB_WORKAROUND=1 xsane
Or
 $ SANE_USB_WORKAROUND=1 simple-scan

The weird thing is I had previously set that variable by adding `export SANE_USB_WORKAROUND=1` in my ~/.bashrc as outlined here.[2]

But that *did not work*.

It's only by chance I tried this.
So, apparently for the SCX-4600, the USB3 issue is the culprit.

[1] See 'Note 3' in the 'Latest News' banner https://web.archive.org/web/20180630125520/http://www.sane-project.org/
[2] https://askubuntu.com/questions/966834/ubuntu-17-10-and-samsung-scx-4624f-scanner-not-working/966835#966835