Hi, Attached you find a possible patch for the 1200dpi issue. Please report if it's working.
Many thanks for your help. Cheers, Rolf Am 08.09.2018 um 13:20 schrieb Olaf Meeuwissen: > Hi, > > innocence.fa...@gmx.de writes: > >> Hi All, >> as it seems that this list is largely unmaintained (the below message >> has been sitting in quarantine for weeks now without any action), I > > Sorry to hear that. > @allan> Are you getting notifications about quarantined mail since the > mailing list has been moved to the new server? > >> Here goes: >> I am writing to this list to let you know that the above Canon MFP - a >> 5350 in my case - works (in general) using the pixma backend. >> (Documentation says it's untested.) > > Updated the info about this device and mentioned the issue below. > > > https://gitlab.com/sane-project/backends/commit/fd8aedea4c475f1c8c51c3efe28bc81495ece61c > > @rolf> Anything you know about this and/or could fix? > >> It's detected automatically via >> network, so that's excellent. On top of that, I came across a peculiar >> issue that involves scanning at 1200 dpi resolution (all other >> resolutions work just fine): >> When using xsane frontend, the resulting image looks as though it is >> cut in half (vertically) and then the two halves are interlaced column >> by column into the final result. Re-extracting the two halves is >> actually possible using GIMP, for instance, but they do not quite add >> up to a complete image. (A couple columns seem to be missing.) >> When using simple-scan frontend, the resulting image looks like the >> actual image but interlaced column by column with a white image of the >> same size, stretching the actual image horizontally by 100 percent. >> Erasing every other column in this output will actually yield the >> expected and usable result. >> This, btw., is the exact same result you get when using scanimage - >> -resolution 1200 so I assume it's got to do with sane and/or the >> corresponding pixma backend. I am taking a wild guess here, but could >> this be explained by an asymmetric resolution of 600*1200 (x*y) that >> is then inflated to 1200*1200 using white? >> Perhaps you can look into this issue. It's good enough for me for the >> time being - I usually scan using the embedded app on the device - but >> could use some fixing. TIA! >> Kind Regards, >> Roland > > Hope this helps, > -- > Olaf Meeuwissen, LPIC-2 FSF Associate Member since 2004-01-27 > GnuPG key: F84A2DD9/B3C0 2F47 EA19 64F4 9F13 F43E B8A4 A88A F84A 2DD9 > Support Free Software https://my.fsf.org/donate > Join the Free Software Foundation https://my.fsf.org/join >
<<attachment: pixma_mp150.c.patch2.zip>>
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