Hi Johannes, Johannes Meixner writes:
> Hello, > > On Oct 21 21:32 Olaf Meeuwissen wrote (excerpt): >> Alessandro Zummo writes: >>> There's probably still some bug in the usb code. I have >>> intermittent results with some scanners on usb2 >>> and with others on usb3. switching among the two usb >>> standards solves them all. >> >> I'm curious about USB related issues that other backends >> are facing that might be solved by switching to libusb-1 >> as the default. > > At openSUSE we use libusb-1 since openSUSE 12.2 > (i.e. we use libusb-1 since about April 2012) > via "configure --enable-libusb_1_0". > I am not aware of issues because of this. Thanks for the info. So at least changing to libusb-1 is unlikely to cause any trouble. My original question however, was if doing so would fix any outstanding libusb-0 issues that we may have. I could go through the open tickets but if someone knows of any off the top of their head ... # The Alioth tracker's advanced query functionality still has me # completely mistified. > Regarding USB 3, see > https://bugzilla.opensuse.org/show_bug.cgi?id=856794 > > Summary: > It seems one needs a very current kernel for USB 3. > For me kernel 4.1.6 did not work with sane-backends-1.0.25. > For me kernel-vanilla-4.3.rc5 works where it seems > the xhci USB driver is now at least somewhat fixed. > But I needed additionally the workarounds for > the broken xhci driver in sane-backends-1.0.25 > i.e. sane-backends-1.0.24 did not work for me > with kernel-vanilla-4.3.rc5, see > https://bugzilla.opensuse.org/show_bug.cgi?id=856794#c28 USB 3 is known to be a bit of a "rough ride" and nobody seems to know what the secret mix is to get things to work. Thanks again for the feedback. -- Olaf Meeuwissen, LPIC-2 FSF Associate Member since 2004-01-27 Support Free Software Support the Free Software Foundation https://my.fsf.org/donate https://my.fsf.org/join GnuPG key: F84A2DD9/B3C0 2F47 EA19 64F4 9F13 F43E B8A4 A88A F84A 2DD9 -- sane-devel mailing list: sane-devel@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel Unsubscribe: Send mail with subject "unsubscribe your_password" to sane-devel-requ...@lists.alioth.debian.org