On Sun, Nov 07, 2021 at 08:16:42PM +0100, Wolfram Sang wrote: > Please check if that works on your system as well.
I mentioned earlier in this thread that I had seen problems when trying to scan large areas at high resolutions. I have now confirmed this both with xsane and scanimage, so I suppose that this is a problem with the epson2 backend. An example with scanimage is $ SANE_DEBUG_EPSON2=20 scanimage -d epson2:libusb:003:007 --format=png --mode Color --depth 14 --wait-for-button -l 0.425 -t 10.073 -x 90 -y 76 --resolution 3200 -d epson2:libusb:002:008 --source 'Transparency Unit' --film-type 'Positive Film' 2> ~/linux/sane_bug/scanimage_overflo.txt > /tmp/try.png The resolution of 3200 is the largest that the 1640SU supports. $ ls -l /tmp/try.png 13651522 Nov 18 18:11 /tmp/try.png about 14M, far too small. /tmp/try.png just shows a few of the topmost scan lines: it is obviously very partial. The gzipped scanimage_overflo.txt.gz is attached. I note it contains many lines like moving data 0x5594ee475870 0x5594ee476220, 32768 (0 lines) but I have barely even skimmed it. ael
