Hi,
On 2020-05-20 1:47 a.m., Olaf Meeuwissen wrote:
Hi,
I only see Ralph's part of the conversation on the list ...
That might be at least partly my fault. I may have used reply instead of
reply-all at one time.
--
This is certainly a strange issue.
Perhaps I can summarise according to my understanding, and someone else
might have some ideas.
The user has two machines: a main machine connected via USB to a
Samsung SCX-3405W and a network connect laptop.
Both machines are running some version of Linux Mint. I neglected to ask
which version.
I believe that they are both running SANE 1.0.27.
The main machine can successfully print and scan using the direct USB
connection.
The user wants to do network scanning from the laptop to the main
machine using saned and the net backend.
As we left it, there seem to be two issues:
1) ***The laptop net backend does not appear to be reading config from
its config file. ***
The user has listed the file /etc/sane.d/net.conf showing the main
machine IP at the end.
Diag from the net backend shows that it does not pick this up.
However, the net backend can pick up the main machine IP in
SANE_NET_HOSTS env variable, so was able to initiate a connection, but
no scanners are reported.
The only thing I can think of is that the SANE installation on the
laptop is broken and perhaps the net backend is not looking in
/etc/sane.d for its config.
We did not pursue it further at that point, having managed to make a
connection.
2) ***saned at the main machine fails to talk to the scanner, although
it does detect it.***
Stopping the saned service on the main machine, and running saned
manually as the user that can successfully scan, diag output revealed
that the xerox_mfnp backend is having trouble talking to the scanner
over USB when the laptop calls in through the net backend for a device list.
[xerox_mfp] usb_dev_open: open 0x5642a807f960
[xerox_mfp] :: dev_command(INQUIRY[0x12], 70)
[xerox_mfp] usb_dev_request: sanei_usb_read_bulk: Error during device I/O
[xerox_mfp] dev_command: dev_request: Error during device I/O
[xerox_mfp] usb_dev_close: closing dev 0x5642a807f960
My suggestion to the user is that perhaps the device is busy, possibly
by a SANE application currently running on the main machine through USB
and to check.
I am at a bit of a loss to understand what is happening here or how to
proceed.
Cheers,
Ralph
