[sane-devel] Network detection fails to find Canon Scanner

[Harvey Nimmo]

Thanks to the wizards who helped me on this problem.
I'm happy to report that scanning is now working with the Canon GX6050
using scangearmp2-4.40 as recommended together with suggested firewall
adjustments. It took a bit longer than I had hoped because I was
juggling with kernel updates in parallel.

Anyway: PROBLEM SOLVED!

Cheers
Harvey
 

On Wed, 2023-03-29 at 17:11 +0200, Thierry Huchard wrote:
> Le 2023-03-29 12:38, Harvey Nimmo a écrit :
> > On Wed, 2023-03-29 at 00:56 +0200, Thierry Huchard wrote:
> > > Le 2023-03-28 19:49, Harvey Nimmo a écrit :
> > > > I downloaded the rpm of sane-airscan and treid to install it.
> > > > Unfortunately, a library (libc.so.6 (GLIBC_2.34)/64 bit) is
> > > > missing
> > > > so
> > > > that the installation could not be completed.
> > > > What could I do about that?
> > > > 
> > > Hi,
> > > 
> > > Can you try this, it is the scangearmp2 version which includes
> > > the
> > > sane
> > > backend.
> > > you should be able to use simple-scan or xsane.
> > > 
> > > https://download.opensuse.org/repositories/home:/thierry1970/15.4/x86_64/
> > > 
> > > Thierry
> > Hi Thiery,
> > scangearmp2-4.20-1 is installed. Neither simple-scan nor xsane find
> > the
> > scanner.
> scangearmp2 4.20 does not support scanners of the GX6000 series, this
> is 
> the case with version scangearmp2 4.40.
> 
> Thierry
> > 
> > simple-scan returns:
> > [12:27:50.038785] [bjnp] udp_command: ERROR - no data received
> > (timeout
> > = 10000)
> > [12:27:50.038938] [bjnp] bjnp_init_device_structure: Cannot read
> > mac
> > address, skipping this scanner
> > [12:27:51.941786] [bjnp] udp_command: ERROR - no data received
> > (timeout
> > = 10000)
> > [12:27:51.941952] [bjnp] bjnp_init_device_structure: Cannot read
> > mac
> > address, skipping this scanner
> > xsane returns:
> > [12:28:46.519643] [bjnp] udp_command: ERROR - no data received
> > (timeout
> > = 10000)
> > [12:28:46.519814] [bjnp] bjnp_init_device_structure: Cannot read
> > mac
> > address, skipping this scanner
> > 
> > These both fail, irrespective of whether my desktop firewall is
> > running
> > or not.
> > 
> > scangearpm2 finds the scanner only if my desktop firewall is not
> > running.
> > 
> > I wonder if there is a problem with port forwarding in my router?
> > but
> > which ports apply?
> > 
> > Cheers
> > Harvey