On Sun, Nov 07, 2021 at 08:16:42PM +0100, Wolfram Sang wrote: > Please check if that works on your system as well.
I have posted several messages during this testing, so I thought it would be useful to give a summary here. 1) This started out with focus problems. I appear to have confirmed that the 1640 accepts, but ignores, focus commands, so the current version of the backend (commit 3b47d1d26a73054b7138759fa7af57ed6c8e8e35 (HEAD -> master, origin/master, origin/HEAD) Date: Thu Oct 21 06:58:39 2021 +0000) with dev->focusSupport = SANE_FALSE is correct. 2) The --film-type Positive Film|Negative Film|Positive Slide|Negative Slide includes the Slide options which I suspect are not available on the 1640SU. They result in something like invalid parameter messages. 3) There is a failure to transfer larger scans: perhaps a counter overflowing. So a significant bug. 4) Using xsane, and [cancel]ing during a scan fails. It is usually necessary to restart the 1640. I have only mentioned this bug in passing in previous messages. I hope this is helpful in following the earlier messages, especially the first few when things were not so clear. ael
