Hoi, forgot an essential info: The hardware is a Pi 3 Ver 1.2 Hardware Revision: a02082
On Fri, May 15, 2020 at 8:08 PM Mac Goever <[email protected]> wrote: > > Hi everyone, > > as I read one can get support on this Mailinglist, I shall give it a > shot with my setup. > I have a running raspbian (Buster / 10 / PI 3B+) with all packets > upgraded every 24h. > > Sane Version is: > -- > scanimage -V > scanimage (sane-backends) 1.0.27; backend version 1.0.27 > -- > > When connecting a Canon LiDE 120, sane-find-scanner gives me: > -- > [...] > found USB scanner (vendor=0x04a9 [Canon], product=0x190e [CanoScan]) > at libusb:001:008 > [...] > -- > which is stable over hours and days. > > Problem occurs with scanimge -L. About 10 seconds after pugging in the > scanner, the device gets detected: > -- > device `genesys:libusb:001:008' is a Canon LiDE 120 flatbed scanner > -- > After these ~10 seconds it disappears and does not come back. > unplugging it and replugging gives another 10 seconds. > > I suspected a power issue, because the LiDE 120 draws it's power via > USB. Unfortunately using a powered hub or a 10Amp power supply does > not change anything. The scanner works without a problem connected to > an Ubuntu notebook with the same sane Version. Tested with USB Hub and > without. > > I already addressed this problem in the IRC and a friendly idler > reproduced the issue. > > Thanks for any efforts > > Martin
