[sane-devel] SANE scanimage unable to connect to third party (backend) driver: brscan3

Andy Bennett andyjpb at ashurst.eu.org
Wed May 21 16:47:32 BST 2025


Hi,

> I am troubleshooting a problem with SANE scanimage unable 
> connect to a third party driver (backend). I have exhausted all 
> resources that I know of to solve this problem. Could you take a 
> moment to review my post on the Linux Mint forum to help guide 
> me to a helpful resource?
>
>
>
> $ sudo scanimage -d brscan3 -T
> Output format is not set, using pnm as a default.
> scanimage: open of device brscan3 failed: Invalid argument
>
>
> https://forums.linuxmint.com/viewtopic.php?p=2632488#p2632488


Does your scanner show up in the output of `scanimage -L`?

If not, it could be that scanimage is not loading the driver, perhaps 
because it cannot find the library.

Running `strace scanimage -L 2>&1 |grep ".so"` should give you some output 
that shows which shared libraries it tries to load and where it tries to 
load them from.




Best wishes,
@ndy

-- 
andyjpb at ashurst.eu.org
http://www.ashurst.eu.org/
0x7EBA75FF



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