On Sat 09 Jan 2021 at 12:55:07 +0000, Dr. Jennifer Nussbaum wrote: > > > On Saturday, January 9, 2021, 07:43:41 AM EST, Brian > <a...@cityscape.co.uk> wrote: > > On Sat 09 Jan 2021 at 12:31:43 +0000, Dr. > Jennifer Nussbaum wrote: > > > > > On Saturday, January 9, 2021, 07:19:39 AM EST, Brian > > ><a...@cityscape.co.uk> wrote: > > > > > > > Install sane-airscan and give > > > > > > > > scanimage -L > > > $ scanimage -L> > device `pixma:04A91913_47A8A4' is a CANON CanoScan LiDE > > > 300 multi-function peripheraldevice `escl:http://127.0.0.1:60000' is a > > > Canon LiDE 300 (USB) flatbed scannerdevice `airscan:e0:Canon LiDE 300 > > > (USB)' is a eSCL Canon LiDE 300 (USB) ip=127.0.0.1 > > > > and > > > > > > > > airscan-discover > > > $ airscan-discover > > [devices] Canon LiDE 300 (USB) = > > > http://127.0.0.1:60000/eSCL/, eSCL > > > When I try to run simple-scan now, it's the same result as before; debug > > > shows the airscan, but I still get the out-of-memory error. > > > Thank you for sticking with this. > > > > How do you go on with > > > > simple-scan "airscan:e0:Canon LiDE 300 (USB)" ? > This works. (As it did when we specified the "pixma" interface.)
Thanks. I still do not understand how the pixma backend can work. ipp-usb has control of USB; pixma should be unable to access the USB bus. Can you scan by choosing airscan, eSCL (note the lower case e), from simple-scan's drop-down menu. > > Would you also try > > > > xsane "airscan:e0:Canon LiDE 300 (USB)"> > > and > > > > xsane ? > I don't have xsane installed. Is that just for background info? I've > used it in the past, and always foundit far too complicated to bother > with. You can always remove it afterwards, but I wanted to know which of the options it offers work. A preview is enough to do. -- Brian.