On Wed, 30 Dec 2020 16:16:06 +0000 Mikolaj Kucharski <[email protected]> wrote:
> On Tue, Dec 29, 2020 at 03:03:06PM +0100, Marcus Glocker wrote: > > On Mon, 28 Dec 2020 20:55:33 +0000 > > [email protected] wrote: > ... > > > >Fix: > > > Per email threads on tech@ from above marc.info links > > > below is not proper solution, but a workaround: > > > > > > --8<-- > > > Index: dev/usb/ugen.c > > > =================================================================== > > > RCS file: /cvs/src/sys/dev/usb/ugen.c,v > > > retrieving revision 1.109 > > > diff -u -p -u -r1.109 ugen.c > > > --- dev/usb/ugen.c 25 Dec 2020 12:59:52 -0000 1.109 > > > +++ dev/usb/ugen.c 27 Dec 2020 22:38:59 -0000 > > > @@ -441,6 +442,7 @@ ugen_do_close(struct ugen_softc *sc, int > > > DPRINTFN(5, ("ugenclose: endpt=%d dir=%d > > > sce=%p\n", endpt, dir, sce)); > > > > > > + usbd_clear_endpoint_stall(sce->pipeh); > > > /* MMM */ usbd_close_pipe(sce->pipeh); > > > sce->pipeh = NULL; > > > > > > -->8-- > > > > > > It makes my scanner work reliably. There is still a second problem > > > metioned by me in https://marc.info/?t=160672895400002&r=1&w=2 but > > > that's different issue. > > > > > > However my question would be, any idea how to proceed from where > > > I am at the moment? Any clues? > > > > > > I've also CC'ed Natasha as she may be interested in this thread, > > > as she was the one who started email threads from above marc.info > > > URLs. > > > > I'll try to reproduce this issue here, but at the moment scanimage > > doesn't like my EPSON ET-2750 too much ... > > Maybe you are facing what I'm seeing on my end (separete issue to > this one reported in this email thread), is that timeout is a bit too > low in sane-backends for my scanner. By default sane-backends has > 1000ms timeout, but I see that about 3000ms for my scanner works > better. > > With default 1 second timeout scanimage would fail a lot with > following error: > > scanimage: sane_read: Error during device I/O > > Below diff is for sane-backends port, which I'm using for testing and > I specify `export SANE_CUSTOM_LIBUSB_TIMEOUT=3000` before starting > scanimage, to set 3 seconds timeout. > > Not sure are you having same issue, maybe it will help you. Sorry, I was not clear; I meant to say that 'scanimage -L' isn't recognizing my EPSON ET-2750 device at all. But in the meantime I could get my hands on a CANON CanoScan LiDE 400, which gets recognized, and it looks like I see similar issues like you do. Based on that I can do some further investigations.
