Hi Rogério, I opened a merge request for your issue here: https://gitlab.com/sane-project/backends/merge_requests/213
Please build SANE from source as described in INSTALL.linux (http://www.sane-project.org/docs.html). If this is working, please pull recent code from git ($ git pull), checkout our test code ($ git checkout pixma/e4200-adf) and build SANE again. Then ADF should work. Please report your results in the merge request. Many thanks for your help. Cheers, Rolf Am 09.10.19 um 07:16 schrieb Rogério Brito: > Dear Rolf, > > On Oct 07 2019, Rolf Bensch wrote: >> I can see an error response in your log file. > > First of all, sorry for not being able to respond earlier, but I'm having > some quite hectic days. Second, thank you very much for helping with this. > >> To fix this I need an USB snoop file from Canon's ScanGear Software. You >> can use wireshark for snooping (to enable USB support read this: >> https://wiki.wireshark.org/CaptureSetup/USB). > > I took 2 captures of 2 pages from the ADF: once in "Text Mode" and another > in whatever other mode is available. > > In both cases, the resulting PDF file had files in 300dpi in JPEG format and > they were 3-channel JPEGs. There doesn't seem to be any way of changing the > resolution or format that the files will be saved in. > > Regarding the captures, I don't know if I should send them attached via > email or posted somewhere, but I will send the 1st one here and post both on > my homepage at: > > https://www.ime.usp.br/~rbrito/linux/canon-e4210/ > >> Many thanks for your help. > > Many thanks for your help! If you need other information, please let me know > and I will try my best. > > > Thank you very much again, > > Rogério Brito. >