Имеется сканер Microtek Phantom 336CX, Ubuntu 14.04 LTS, Linux 3.13.0-62-generic #102-Ubuntu SMP Tue Aug 11 14:28:35 UTC 2015 i686 i686 i686 GNU/Linux.
Bus 001 Device 002: ID 13d3:3323 IMC Networks
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 003: ID 04d9:1605 Holtek Semiconductor, Inc.
Bus 004 Device 002: ID 0458:003a KYE Systems Corp. (Mouse Systems) NetScroll+ Mini Traveler / Genius NetScroll 120
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 05da:00a0 Microtek International, Inc. Phantom 336CX/C3 (#2)
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
[ 246.192049] usb 3-2: new full-speed USB device number 2 using uhci_hcd
[ 246.341067] usb 3-2: New USB device found, idVendor=05da, idProduct=00a0
[ 246.341080] usb 3-2: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 246.364394] WARNING! power/level is deprecated; use power/control instead
[ 246.403640] scsi4 : microtekX6
[ 246.403940] usbcore: registered new interface driver microtekX6
[ 246.417100] scsi 4:0:0:0: Scanner scanner 330CSU 1.31 PQ: 0 ANSI: 2
[ 246.428446] scsi 4:0:0:0: Attached scsi generic sg1 type 6
В файле /lib/udev/rules.d/40-libsane.rules добавил строку для своего сканера
ATTRS{idVendor}=="05da", ATTRS{idProduct}=="00a0", ENV{libsane_matched}="yes"
Сканер в Simple Scan виден:

Однако, после нажатия на кнопку "Сканировать" в GUI
сканирование не удается, сканер дёргается, начиная сканировать, и останавливается, команды lsusb scanimage больше не отвечают, а в demesg такая ерунда:
[ 448.311452] perf samples too long (5010 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
[ 790.213279] systemd-hostnamed[2693]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
[ 803.391575] file-roller[2677]: segfault at 1b8 ip 08091f53 sp bf9bf6b0 error 4 in file-roller[8048000+7c000]
[ 1995.002240] microtek usb (rev 0.4.3): could not submit URB! Error was -1
[ 2161.000190] INFO: task scanimage:2881 blocked for more than 120 seconds.
[ 2161.000206] Tainted: G C 3.13.0-62-generic #102-Ubuntu
[ 2161.000212] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 2161.000219] scanimage D c12abafa 0 2881 2848 0x00000000
[ 2161.000232] c675feb8 00000082 c1186be5 c12abafa 000080d0 c1a9c300 6619cbfa 000001d4
[ 2161.000252] c1a9c300 d77b8d00 d77bb400 f7bd0300 f6c295c8 c675fe78 c13003a0 f6c29580
[ 2161.000271] c675fe90 c118e3ce 00000000 c675fef4 c675fe90 c119651d c675fee0 c1187f20
[ 2161.000290] Call Trace:
[ 2161.000310] [<c1186be5>] ? link_path_walk+0x1e5/0x6d0
[ 2161.000324] [<c12abafa>] ? apparmor_file_alloc_security+0x4a/0x130
[ 2161.000337] [<c13003a0>] ? lockref_put_or_lock+0x20/0x30
[ 2161.000349] [<c118e3ce>] ? dput+0x1e/0x150
[ 2161.000362] [<c119651d>] ? mntput+0x1d/0x30
[ 2161.000373] [<c1187f20>] ? path_openat+0x120/0x520
[ 2161.000388] [<c165c723>] schedule_preempt_disabled+0x23/0x60
[ 2161.000400] [<c165e06d>] __mutex_lock_slowpath+0x10d/0x171
[ 2161.000414] [<c14b6d50>] ? authorized_show+0x40/0x40
[ 2161.000426] [<c165d59c>] mutex_lock+0x1c/0x28
[ 2161.000438] [<c14b6d70>] read_descriptors+0x20/0x100
[ 2161.000449] [<c14b6d50>] ? authorized_show+0x40/0x40
[ 2161.000461] [<c11dd4be>] sysfs_bin_read+0xde/0x250
[ 2161.000474] [<c11dd3e0>] ? sysfs_write_file+0x1c0/0x1c0
[ 2161.000485] [<c117a908>] vfs_read+0x78/0x140
[ 2161.000497] [<c117b079>] SyS_read+0x49/0x90
[ 2161.000508] [<c1666b4d>] sysenter_do_call+0x12/0x12
[ 2161.000518] INFO: task lsusb:2883 blocked for more than 120 seconds.
[ 2161.000527] Tainted: G C 3.13.0-62-generic #102-Ubuntu
[ 2161.000532] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 2161.000538] lsusb D c12abafa 0 2883 2466 0x00000000
[ 2161.000549] c679feb8 00000082 c1186be5 c12abafa 000080d0 c1a9c300 c192ca00 d77bc100
[ 2161.000566] c1a9c300 c192ca00 d77bc100 f7bc2300 f6c295c8 c679fe78 c13003a0 f6c29580
[ 2161.000582] c679fe90 c118e3ce 00000000 c679fef4 c679fe90 c119651d c679fee0 c1187f20
[ 2161.000600] Call Trace:
[ 2161.000613] [<c1186be5>] ? link_path_walk+0x1e5/0x6d0
[ 2161.000624] [<c12abafa>] ? apparmor_file_alloc_security+0x4a/0x130
[ 2161.000637] [<c13003a0>] ? lockref_put_or_lock+0x20/0x30
[ 2161.000648] [<c118e3ce>] ? dput+0x1e/0x150
[ 2161.000660] [<c119651d>] ? mntput+0x1d/0x30
[ 2161.000671] [<c1187f20>] ? path_openat+0x120/0x520
[ 2161.000683] [<c165c723>] schedule_preempt_disabled+0x23/0x60
[ 2161.000693] [<c165e06d>] __mutex_lock_slowpath+0x10d/0x171
[ 2161.000705] [<c14b6d50>] ? authorized_show+0x40/0x40
[ 2161.000716] [<c165d59c>] mutex_lock+0x1c/0x28
[ 2161.000728] [<c14b6d70>] read_descriptors+0x20/0x100
[ 2161.000740] [<c14b6d50>] ? authorized_show+0x40/0x40
[ 2161.000751] [<c11dd4be>] sysfs_bin_read+0xde/0x250
[ 2161.000762] [<c11dd3e0>] ? sysfs_write_file+0x1c0/0x1c0
[ 2161.000773] [<c117a908>] vfs_read+0x78/0x140
[ 2161.000784] [<c117b079>] SyS_read+0x49/0x90
[ 2161.000795] [<c1666b4d>] sysenter_do_call+0x12/0x12
Что можно ещё предпринять для решения проблемы?