Hello,
On Nov 14 20:58 Olaf Meeuwissen wrote (excerpt):
The mailing list archives have a number of posts on USB3 issues.
FYI: Only "lsusb -t" output shows what kernel driver is actually used. Regarding "USB 2" versus "USB 3" see http://lists.alioth.debian.org/pipermail/sane-devel/2015-December/034197.html and http://lists.alioth.debian.org/pipermail/sane-devel/2015-December/034207.html See also https://bugzilla.opensuse.org/show_bug.cgi?id=955079#c2 and https://bugzilla.opensuse.org/show_bug.cgi?id=856794 in particular https://bugzilla.opensuse.org/show_bug.cgi?id=856794#c50 Finally see http://bugzilla.opensuse.org/show_bug.cgi?id=975866 for possible workarounds by using an appropriate version of the sane-backends software that may (hopefully) work with your currently used "xhci_hcd" driver from your currently installed kerenel. Alternatively: If possible connect scanners at a traditional real "USB 2" port.
If at all possible, use the device via USB2.0, by blacklisting the xhci kernel modules for example.
Usually it is not possible to use USB 3 hardware as if it was USB 2 hardware (i.e. it is not possible to use USB 3 hardware without the xhci kernel module), see https://bugzilla.opensuse.org/show_bug.cgi?id=920067#c23 On nowadays computers there is often only USB 3 hardware so that blacklisting the xhci kernel module would make the whole USB no longer working which is in particular bad when keyboard and mouse are connected via USB 3 hardware, (have fun with un-blacklisting the xhci kernel module ;-). One needs real traditional USB 2 hardware in the computer to use a scanner device without the xhci kernel module. As far as I know only few particular USB 3 capable chipsets provide both real USB 3 hardware and real USB 2 hardware. An ultimate way out: Some users bought additional real USB 2 hardware for less than 10 Euros to escape from the current USB 3 mess, see https://bugzilla.opensuse.org/show_bug.cgi?id=856794#c49 I think about 10 Euros to get this issue out of sight is an acceptable price compared to the currently still ongoing annoyance with this issue (independent of when the issue may get solved at some time in the future). Kind Regards Johannes Meixner -- SUSE LINUX GmbH - GF: Felix Imendoerffer, Jane Smithard, Graham Norton - HRB 21284 (AG Nuernberg) -- sane-devel mailing list: [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel Unsubscribe: Send mail with subject "unsubscribe your_password" to [email protected]
