Comment 10 for bug 211569

Same problem here, using an Epson 2400 Perfection Photo flatbet scanner. Weird - I remember it working once (xsane started up correctly) before applying online updates. Can this be a bug introduced by an online update?

lsusb finds it (connected to a USB hub):
    Bus 004 Device 008: ID 04b8:011b Seiko Epson Corp. Perfection 2400 Photo

sane-find-scanner finds it:
    found USB scanner (vendor=0x04b8, product=0x011b) at libusb:004:008

but xsane does not. 'sudo xsane' works fine however. "lshal" entry:

udi = '/org/freedesktop/Hal/devices/usb_device_4b8_11b_noserial'
  info.bus = 'usb_device' (string)
  info.linux.driver = 'usb' (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_4b4_6560_noserial' (string)
  info.product = 'Perfection 2400 Photo' (string)
  info.subsystem = 'usb_device' (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_4b8_11b_noserial' (string)
  info.vendor = 'Seiko Epson Corp.' (string)
  linux.device_file = '/dev/bus/usb/004/008' (string)
  linux.hotplug_type = 2 (0x2) (int)
  linux.subsystem = 'usb' (string)
  linux.sysfs_path = '/sys/devices/pci0001:10/0001:10:1b.2/usb4/4-2/4-2.3' (string)
  usb_device.bus_number = 4 (0x4) (int)
  usb_device.can_wake_up = false (bool)
  usb_device.configuration_value = 1 (0x1) (int)
  usb_device.device_class = 255 (0xff) (int)
  usb_device.device_protocol = 255 (0xff) (int)
  usb_device.device_revision_bcd = 256 (0x100) (int)
  usb_device.device_subclass = 255 (0xff) (int)
  usb_device.is_self_powered = true (bool)
  usb_device.linux.device_number = 8 (0x8) (int)
  usb_device.linux.sysfs_path = '/sys/devices/pci0001:10/0001:10:1b.2/usb4/4-2/4-2.3' (string)
  usb_device.max_power = 2 (0x2) (int)
  usb_device.num_configurations = 1 (0x1) (int)
  usb_device.num_interfaces = 1 (0x1) (int)
  usb_device.num_ports = 0 (0x0) (int)
  usb_device.product = 'Perfection 2400 Photo' (string)
  usb_device.product_id = 283 (0x11b) (int)
  usb_device.speed = 480.0 (480) (double)
  usb_device.speed_bcd = 294912 (0x48000) (int)
  usb_device.vendor = 'Seiko Epson Corp.' (string)
  usb_device.vendor_id = 1208 (0x4b8) (int)
  usb_device.version = 2.0 (2) (double)
  usb_device.version_bcd = 512 (0x200) (int)

getfacl reports only root access is allowed:
  getfacl: Removing leading '/' from absolute path names
  # file: dev/bus/usb/004/008
  # owner: root
  # group: root
  user::rw-
  group::rw-
  other::r--

Why?

"ck-list-sessions" does not output anything.

This is on a Mac Mini G4 running Ubuntu 8.04 LTS PPC.