Comment 27 for bug 879619

In Lubuntu 14.04.2, kernel 4.2.0-32-generic #37~14.04.1-Ubuntu SMP
it's still problem. Yes, I have laptop with usb 3.0, and xhci_hcd driver. All configs is good, running from root allows scan sometimes, after 3-4 tryes with xsane, simple-scan don't see anything.
Please create new thread yourself, I don't know where do it.

Feb 2 23:21:39 acer colord: Device added: sysfs-Xerox-WorkCentre_3119_Series
Feb 2 23:22:02 acer CRON[32317]: (root) CMD (touch /media/outer/.timestamp >/dev/null 2>/dev/null)
Feb 2 23:22:02 acer kernel: [ 3581.748586] vgaarb: this pci device is not a vga device
Feb 2 23:22:03 acer kernel: [ 3582.762097] vgaarb: this pci device is not a vga device
^Croot@acer:~export SANE_DEBUG_XEROX_MFP=255
root@acer:~# scanimage -L
[sanei_debug] Setting debug level of xerox_mfp to 255.
[xerox_mfp] sane_init: Xerox backend (build 13), version != null, authorize != null
[xerox_mfp] sane_xerox_mfp_get_devices: 0xbf9d9e5c, 0
[xerox_mfp] list_one_device: libusb:001:012
[xerox_mfp] usb_dev_open: open 0x916fef8
[xerox_mfp] :: dev_command(INQUIRY[0x12], 70)
[xerox_mfp] [70] a8 00 43 10 53 41 4d 53 55 4e 47 20 4f 52 49 4f 4e 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 35 3f 04 29 00 00 27 d8 00 00 36 d8 00 01 2f 00 00 02 00 00 00 00 36 d8 00 00 36 d8 04 01 05 05 00...
[xerox_mfp] dev_inquiry: found SAMSUNG/ORION
[xerox_mfp] usb_dev_close: closing dev 0x916fef8
device `xerox_mfp:libusb:001:012' is a SAMSUNG ORION multi-function peripheral
root@acer:~# scanimage -L
[sanei_debug] Setting debug level of xerox_mfp to 255.
[xerox_mfp] sane_init: Xerox backend (build 13), version != null, authorize != null
[xerox_mfp] sane_xerox_mfp_get_devices: 0xbfe0858c, 0
[xerox_mfp] list_one_device: libusb:001:012
[xerox_mfp] usb_dev_open: open 0x8817ef8
[xerox_mfp] :: dev_command(INQUIRY[0x12], 70)
[xerox_mfp] usb_dev_request: sanei_usb_read_bulk: Error during device I/O
[xerox_mfp] dev_command: dev_request: Error during device I/O
[xerox_mfp] usb_dev_close: closing dev 0x8817ef8
[xerox_mfp] list_one_device: dev_inquiry(libusb:001:012): Error during device I/O

No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).