<div dir="ltr"><div dir="ltr">Hi,</div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Fri, Dec 12, 2025 at 4:23 AM David Webb via sane-devel <<a href="mailto:sane-devel@alioth-lists.debian.net">sane-devel@alioth-lists.debian.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi,<br>
<br>
Just to report, as requested in the man page, that I have successfully<br>
scanned a number of slides with the command:<br>
<br>
>scanimage --autofocus --ae-wb --format=png -p -d<br>
coolscan3:usb:libusb:001:003 -o cd34a_e.png<br>
<br>
This is using the Opensuse 15.6 operating system. Thanks for you help.<br>
<br>
However the infrared option fails:<br>
<br>
>scanimage --autofocus --ae-wb --format=tiff --infrared=yes --batch<br>
--batch-count=2 -p -d coolscan3:usb:libusb:001:003<br>
scanimage: attempted to set inactive option infrared<br>
<br>
I've tried it with and without the '--batch' flag. Any ideas??<br>
<br>
Best regards,<br>
<br>
David.<br><br></blockquote><div><br></div><div>Hi,</div><div>You could look at the debug output by setting the env variable SANE_DEBUG_COOLSCAN3=128.</div><div>Sounds from the output that this option is either unsupported with this device or with this combination of options.</div><div><br></div><div>You'd have to dive into the code to see why. If you use the -A option with scanimage (with all the options you were using except --infrared), you will get a list of available options. Presumably it would be labelled as inactive.</div><div><br></div><div>If you get no luck with the above, I could have a quick look to see if I can figure it out. --infrared may conflict with another option that you have selected. I don't believe that we have a current maintainer for this backend unfortunately.</div><div><br></div><div>Cheers,</div><div>Ralph</div></div></div>