On 09/11/2014 05:19 AM, Mike Cloaked wrote: > This would seem to indicate that there is some kind of bug in the sane > packages. I have tried in the past to find out how to diagnose this issue > but I don't know where to begin to get logs that might help in finding > where the problem lies.
Hi Mike, I have the same scanner & had exactly the same issue when I recently replaced my desktop computer. I spent quite some time trying to figure out what was the cause & indeed there are plenty of people with this problem! The bug seems to be within the xhci_hcd kernel module. The thing is that my computer has some USB 2 ports on the back and the scanner still didn't work there. What surprised me was that dmesg still showed "xhci_hcd" as being used by those USB 2 ports. So, it seems that, on my computer, even though I'm connecting the scanner to a USB 2 port on the back, it is still been routed internally to the USB3 host controller. I then went to my BIOS and found an option , under the USB section, called "USB Debug Support", that said: "Select whether to enable or disable the USB port 6 debug capability. Note: If the function is enabled, the port 6 will work as an USB 2.0 port". I enabled it and placed my scanner on that particular port and bingo (dmesg showed ehci-pci as being used) & the scanner worked perfectly fine. Of course, this is a workaround (not a fix) but I'm happy to use it in the meantime. This is a Lenovo workstation & I'm lucky to have that option (to enable USB 2 for just one particular port without affecting the rest of my USB 3 ports). This thread pointed me to the right direction: http://askubuntu.com/questions/457901/usb-2-0-device-scanner-does-not-work-with-xhci-hcd-on-usb-3-0-system Try to see if there's such an option on your BIOS. HTH, Jorge p.d. I'm using Fedora 20 -- 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]
