[sane-devel] No Backends found

[thierryh at vivaldi.net]

Le 2026-06-25 23:52, Joe Zeff a écrit :
> On 6/25/26 3:31 PM, thierryh at vivaldi.net wrote:
>> 
>> With the version of scangearmp2 you installed, only ScanGear can use 
>> Canon's proprietary driver.
> 
> That's interesting, especially when you consider that I downloaded them 
> from Canon's site.

You indicated that you installed version **4.71**.

The limitations you're experiencing are due to that version itself: it 
is limited to a maximum scan resolution of **150 DPI** and, even worse, 
it still uses **GTK2**, which is no longer supported.

The version available in my repository:
https://download.opensuse.org/repositories/home:/thierry1970/

uses **GTK3**, supports scanning up to **600 DPI**, and also allows the 
use of **SANE** tools (provided your distribution supports them).

 From everything you've posted so far, we know that your scanner is 
connected via **USB** and that two drivers detect it: **PIXMA** and 
**AirScan**.

It's possible that the PIXMA driver is being interfered with by 
**ipp-usb**, which enables AirScan (eSCL) devices to work over USB.

You should try uninstalling or disabling **ipp-usb** (the AirScan driver 
will no longer be available) and then test the PIXMA driver again as 
described in my previous messages.

As a last resort, uninstall your current version of **ScanGear** and 
install the one from the repository mentioned above, which is version 
**4.90**.

Good luck!

Thierry