Error with Mustek Bearpaw 1200 CU with scanimage: sane_start: Invalid argument

[matkor]

I am running airsaned commit: 806e57d (branch master, revision 247) on Ubuntu 20.04.5 LTS.

Though scanning previews works via http://192.168.3.41:8090/eSCL , scanner seems be available:

$ scanimage -L
device `escl:http://192.168.3.41:8090' is a ESCL Mustek Bearpaw 1200 CU Plus flatbed scanner

Any try to scan fails with:

$ scanimage -d 'escl:http://192.168.3.41:8090' > t.img
Output format is not set, using pnm as a default.
Capability : [(null)]
Capability : [image/jpeg]
Capability : [image/png]
scanimage: rounded value of br-x from 0 to 0
scanimage: rounded value of br-y from 0 to 0
scanimage: sane_start: Invalid argument

[SimulPiscator]

Unfortunately, the escl SANE backend is not compatible with AirSane. You will need to use the sane-airscan backend. It should be available in your distribution through sudo apt install sane-airscan.

[matkor]

Absolutely right. Using -d "airscan:e0:Mustek Bearpaw 1200 CU Plus" seems to work very well. Thanks for explanation!