[sane-devel] Problem using SX410 scanner - Invalid argument error

[Steffan Harris]

I'm getting invalid argument errors when trying to run scanimage > 
out.pnm using an Epson SX410 printer/scanner unit running sane-backends 
1.0.21 on Debian. Here's the debug output:

steffan at debian:~$ scanimage -L
device `v4l:/dev/video0' is a Noname Built-in iSight virtual device
device `epson2:libusb:001:014' is a Epson PID 0851 flatbed scanner
steffan at debian:~$ scanimage --version
scanimage (sane-backends) 1.0.21; backend version 1.0.21
steffan at debian:~$ SANE_DEBUG_EPSON2=255 scanimage > out.pnm
[sanei_debug] Setting debug level of epson2 to 255.
[epson2] sane_epson2_init: sane-backends 1.0.21
[epson2] epson2 backend, version 1.0.124
[epson2] sane_epson2_get_devices
[epson2] probe_devices
[epson2] free_devices
[epson2] attach_one_config: len = 3, line = usb
[epson2] attach_one_config: len = 16, line = usb 0x4b8 0x0851
[epson2] attach_one_usb: dev = libusb:001:014
[epson2] attach: devname = libusb:001:014, type = 3
[epson2] e2_dev_init
[epson2] open_scanner: libusb:001:014
[epson2] scanner opened
[epson2] found valid Epson scanner: 0x4b8/0x851 (vendorID/productID)
[epson2] e2_set_model: model is 'generic'
[epson2] esci_reset
[epson2] e2_cmd_simple: size = 2
[epson2] e2_send: size = 2, reply = 1
[epson2] e2_send: ESC @
[epson2] buf[0] 1b .
[epson2] buf[1] 40 @
[epson2] e2_send: cmd count, r = 0, w = 1
[epson2] e2_recv: size = 1, buf = 0x7fff933ced5f
[epson2] e2_recv: cmd count, r = 1, w = 1
[epson2] buf[0] 06 .
[epson2] e2_discover_capabilities
[epson2] esci_request_identity
[epson2] e2_cmd_info_block, params len = 2, reply len = 0, buf = 
0x7fff933ced48
[epson2] e2_send: size = 2, reply = 0
[epson2] e2_send: ESC I
[epson2] buf[0] 1b .
[epson2] buf[1] 49 I
[epson2] e2_send: cmd count, r = 1, w = 2
[epson2] e2_recv: size = 4, buf = 0x7fff933cec10
[epson2] e2_recv: cmd count, r = 2, w = 2
[epson2] buf[0] 02 .
[epson2] buf[1] 02 .
[epson2] buf[2] 13 .
[epson2] buf[3] 00 .
[epson2] e2_recv_info_block: payload length: 19
[epson2] e2_recv: size = 19, buf = 0x9d42b0
[epson2] e2_recv: cmd count, r = 3, w = 2
[epson2] buf[0] 44 D
[epson2] buf[1] 37 7
[epson2] buf[2] 52 R
[epson2] buf[3] 4b K
[epson2] buf[4] 00 .
[epson2] buf[5] 52 R
[epson2] buf[6] 2c ,
[epson2] buf[7] 01 .
[epson2] buf[8] 52 R
[epson2] buf[9] 58 X
[epson2] buf[10] 02 .
[epson2] buf[11] 52 R
[epson2] buf[12] b0 .
[epson2] buf[13] 04 .
[epson2] buf[14] 41 A
[epson2] buf[15] d8 .
[epson2] buf[16] 27 '
[epson2] buf[17] d8 .
[epson2] buf[18] 36 6
[epson2] e2_set_cmd_level: D7
[epson2] e2_add_resolution: add (dpi): 75
[epson2] e2_add_resolution: add (dpi): 300
[epson2] e2_add_resolution: add (dpi): 600
[epson2] e2_add_resolution: add (dpi): 1200
[epson2] maximum scan area: 10200x14040
[epson2] e2_set_fbf_area: 0.000000,0.000000 215.899994,297.179993 1200 [mm]
[epson2] esci_request_status
[epson2] e2_send: size = 2, reply = 4
[epson2] e2_send: ESC F
[epson2] buf[0] 1b .
[epson2] buf[1] 46 F
[epson2] e2_send: cmd count, r = 3, w = 3
[epson2] e2_recv: size = 4, buf = 0x7fff933cec60
[epson2] e2_recv: cmd count, r = 4, w = 3
[epson2] buf[0] 02 .
[epson2] buf[1] 02 .
[epson2] buf[2] 00 .
[epson2] buf[3] 00 .
[epson2] status: 02
[epson2]  ready
[epson2]  no option equipment installed
[epson2]  support extended commands
[epson2] detection with request_extended_status
[epson2] esci_request_extended_status
[epson2] e2_cmd_info_block, params len = 2, reply len = 42, buf = 
0x7fff933ceca8
[epson2] e2_send: size = 2, reply = 46
[epson2] e2_send: ESC f
[epson2] buf[0] 1b .
[epson2] buf[1] 66 f
[epson2] e2_send: cmd count, r = 4, w = 4
[epson2] e2_recv: size = 4, buf = 0x7fff933cebf0
[epson2] e2_recv: cmd count, r = 5, w = 4
[epson2] buf[0] 02 .
[epson2] buf[1] 02 .
[epson2] buf[2] 2a *
[epson2] buf[3] 00 .
[epson2] e2_recv_info_block: payload length: 42
[epson2] e2_recv: size = 42, buf = 0x9d4ba0
[epson2] e2_recv: cmd count, r = 6, w = 4
[epson2] buf[0] 00 .
[epson2] buf[1] 00 .
[epson2] buf[2] 00 .
[epson2] buf[3] 00 .
[epson2] buf[4] 00 .
[epson2] buf[5] 00 .
[epson2] buf[6] 00 .
[epson2] buf[7] 00 .
[epson2] buf[8] 00 .
[epson2] buf[9] 00 .
[epson2] buf[10] 00 .
[epson2] buf[11] c0 .
[epson2] buf[12] d8 .
[epson2] buf[13] 27 '
[epson2] buf[14] d8 .
[epson2] buf[15] 36 6
[epson2] buf[16] 00 .
[epson2] buf[17] 00 .
[epson2] buf[18] 00 .
[epson2] buf[19] 00 .
[epson2] buf[20] 00 .
[epson2] buf[21] 00 .
[epson2] buf[22] 00 .
[epson2] buf[23] 00 .
[epson2] buf[24] 00 .
[epson2] buf[25] 00 .
[epson2] buf[26] 50 P
[epson2] buf[27] 49 I
[epson2] buf[28] 44 D
[epson2] buf[29] 20
[epson2] buf[30] 30 0
[epson2] buf[31] 38 8
[epson2] buf[32] 35 5
[epson2] buf[33] 31 1
[epson2] buf[34] 20
[epson2] buf[35] 20
[epson2] buf[36] 20
[epson2] buf[37] 20
[epson2] buf[38] 20
[epson2] buf[39] 20
[epson2] buf[40] 20
[epson2] buf[41] 20
[epson2] main = 00, ADF = 00, TPU = 00, main 2 = c0
[epson2] e2_set_model: model is 'PID 0851'
[epson2] e2_set_fbf_area: 0.000000,0.000000 215.899994,297.179993 1200 [mm]
[epson2] no command available to detect capabilities
[epson2] esci_request_identity2
[epson2] e2_cmd_info_block, params len = 2, reply len = 0, buf = 
0x7fff933ced48
[epson2] e2_send: size = 2, reply = 0
[epson2] e2_send: ESC i
[epson2] buf[0] 1b .
[epson2] buf[1] 69 i
[epson2] e2_send: cmd count, r = 6, w = 5
[epson2] e2_recv: size = 4, buf = 0x7fff933cec00
[epson2] e2_recv: cmd count, r = 7, w = 5
[epson2] buf[0] 02 .
[epson2] buf[1] 02 .
[epson2] buf[2] 28 (
[epson2] buf[3] 00 .
[epson2] e2_recv_info_block: payload length: 40
[epson2] e2_recv: size = 40, buf = 0x9d4be0
[epson2] e2_recv: cmd count, r = 8, w = 5
[epson2] buf[0] b0 .
[epson2] buf[1] 04 .
[epson2] buf[2] 55 U
[epson2] buf[3] 00 .
[epson2] buf[4] 00 .
[epson2] buf[5] 00 .
[epson2] buf[6] 00 .
[epson2] buf[7] 00 .
[epson2] buf[8] 00 .
[epson2] buf[9] 00 .
[epson2] buf[10] 00 .
[epson2] buf[11] 00 .
[epson2] buf[12] 00 .
[epson2] buf[13] 00 .
[epson2] buf[14] 4b K
[epson2] buf[15] 00 .
[epson2] buf[16] 96 .
[epson2] buf[17] 00 .
[epson2] buf[18] 2c ,
[epson2] buf[19] 01 .
[epson2] buf[20] 58 X
[epson2] buf[21] 02 .
[epson2] buf[22] b0 .
[epson2] buf[23] 04 .
[epson2] buf[24] 00 .
[epson2] buf[25] 00 .
[epson2] buf[26] 4b K
[epson2] buf[27] 00 .
[epson2] buf[28] 96 .
[epson2] buf[29] 00 .
[epson2] buf[30] 2c ,
[epson2] buf[31] 01 .
[epson2] buf[32] 58 X
[epson2] buf[33] 02 .
[epson2] buf[34] b0 .
[epson2] buf[35] 04 .
[epson2] buf[36] 60 `
[epson2] buf[37] 09 .
[epson2] buf[38] 00 .
[epson2] buf[39] 00 .
[epson2] discovering max depth, NAKs are expected
[epson2] e2_esc_cmd: cmd = 0x44, val = 16
[epson2] e2_cmd_simple: size = 2
[epson2] e2_send: size = 2, reply = 1
[epson2] e2_send: ESC D
[epson2] buf[0] 1b .
[epson2] buf[1] 44 D
[epson2] e2_send: cmd count, r = 8, w = 6
[epson2] e2_recv: size = 1, buf = 0x7fff933cec8f
[epson2] e2_recv: cmd count, r = 9, w = 6
[epson2] buf[0] 06 .
[epson2] e2_cmd_simple: size = 1
[epson2] e2_send: size = 1, reply = 1
[epson2] buf[0] 10 .
[epson2] e2_send: cmd count, r = 9, w = 7
[epson2] e2_recv: size = 1, buf = 0x7fff933cec8f
[epson2] e2_recv: cmd count, r = 10, w = 7
[epson2] buf[0] 15 .
[epson2] e2_cmd_simple: NAK
[epson2] e2_esc_cmd: cmd = 0x44, val = 14
[epson2] e2_cmd_simple: size = 2
[epson2] e2_send: size = 2, reply = 1
[epson2] e2_send: ESC D
[epson2] buf[0] 1b .
[epson2] buf[1] 44 D
[epson2] e2_send: cmd count, r = 10, w = 8
[epson2] e2_recv: size = 1, buf = 0x7fff933cec8f
[epson2] e2_recv: cmd count, r = 11, w = 8
[epson2] buf[0] 06 .
[epson2] e2_cmd_simple: size = 1
[epson2] e2_send: size = 1, reply = 1
[epson2] buf[0] 0e .
[epson2] e2_send: cmd count, r = 11, w = 9
[epson2] e2_recv: size = 1, buf = 0x7fff933cec8f
[epson2] e2_recv: cmd count, r = 12, w = 9
[epson2] buf[0] 15 .
[epson2] e2_cmd_simple: NAK
[epson2] e2_esc_cmd: cmd = 0x44, val = 12
[epson2] e2_cmd_simple: size = 2
[epson2] e2_send: size = 2, reply = 1
[epson2] e2_send: ESC D
[epson2] buf[0] 1b .
[epson2] buf[1] 44 D
[epson2] e2_send: cmd count, r = 12, w = 10
[epson2] e2_recv: size = 1, buf = 0x7fff933cec8f
[epson2] e2_recv: cmd count, r = 13, w = 10
[epson2] buf[0] 06 .
[epson2] e2_cmd_simple: size = 1
[epson2] e2_send: size = 1, reply = 1
[epson2] buf[0] 0c .
[epson2] e2_send: cmd count, r = 13, w = 11
[epson2] e2_recv: size = 1, buf = 0x7fff933cec8f
[epson2] e2_recv: cmd count, r = 14, w = 11
[epson2] buf[0] 15 .
[epson2] e2_cmd_simple: NAK
[epson2] maximum supported color depth: 8
[epson2] esci_request_focus_position
[epson2] setting focus is not supported
[epson2] esci_request_scanner_status
[epson2] e2_send: size = 2, reply = 16
[epson2] e2_send: FS F
[epson2] buf[0] 1c .
[epson2] buf[1] 46 F
[epson2] e2_send: cmd count, r = 14, w = 12
[epson2] e2_recv: size = 16, buf = 0x7fff933cecf0
[epson2] e2_recv: cmd count, r = 15, w = 12
[epson2] buf[0] 01 .
[epson2] buf[1] 00 .
[epson2] buf[2] 00 .
[epson2] buf[3] c0 .
[epson2] buf[4] 00 .
[epson2] buf[5] 00 .
[epson2] buf[6] 00 .
[epson2] buf[7] 00 .
[epson2] buf[8] 00 .
[epson2] buf[9] 00 .
[epson2] buf[10] 00 .
[epson2] buf[11] 00 .
[epson2] buf[12] 00 .
[epson2] buf[13] 00 .
[epson2] buf[14] 00 .
[epson2] buf[15] 00 .
[epson2] global status   : 0x01
[epson2]  warmup can be cancelled
[epson2] adf status      : 0x00
[epson2]  not installed
[epson2]  not enabled
[epson2] tpu status      : 0x00
[epson2]  not installed
[epson2]  not enabled
[epson2] device type     : 0xc0
[epson2] main body status: 0x00
[epson2] e2_dev_post_init
[epson2] CCT model id is 0x98, profile offset 83
[epson2] esci_reset
[epson2] e2_cmd_simple: size = 2
[epson2] e2_send: size = 2, reply = 1
[epson2] e2_send: ESC @
[epson2] buf[0] 1b .
[epson2] buf[1] 40 @
[epson2] e2_send: cmd count, r = 15, w = 13
[epson2] e2_recv: size = 1, buf = 0x7fff933ced5f
[epson2] e2_recv: cmd count, r = 16, w = 13
[epson2] buf[0] 06 .
[epson2] scanner model: PID 0851
[epson2] close_scanner: fd = 0
[epson2] esci_request_extended_status
[epson2] e2_cmd_info_block, params len = 2, reply len = 42, buf = 
0x7fff933cede8
[epson2] e2_send: size = 2, reply = 46
[epson2] e2_send: ESC f
[epson2] buf[0] 1b .
[epson2] buf[1] 66 f
[epson2] e2_send: cmd count, r = 16, w = 14
[epson2] e2_recv: size = 4, buf = 0x7fff933ced30
[epson2] e2_recv: cmd count, r = 17, w = 14
[epson2] buf[0] 02 .
[epson2] buf[1] 02 .
[epson2] buf[2] 2a *
[epson2] buf[3] 00 .
[epson2] e2_recv_info_block: payload length: 42
[epson2] e2_recv: size = 42, buf = 0x9d4ba0
[epson2] e2_recv: cmd count, r = 18, w = 14
[epson2] buf[0] 00 .
[epson2] buf[1] 00 .
[epson2] buf[2] 00 .
[epson2] buf[3] 00 .
[epson2] buf[4] 00 .
[epson2] buf[5] 00 .
[epson2] buf[6] 00 .
[epson2] buf[7] 00 .
[epson2] buf[8] 00 .
[epson2] buf[9] 00 .
[epson2] buf[10] 00 .
[epson2] buf[11] c0 .
[epson2] buf[12] d8 .
[epson2] buf[13] 27 '
[epson2] buf[14] d8 .
[epson2] buf[15] 36 6
[epson2] buf[16] 00 .
[epson2] buf[17] 00 .
[epson2] buf[18] 00 .
[epson2] buf[19] 00 .
[epson2] buf[20] 00 .
[epson2] buf[21] 00 .
[epson2] buf[22] 00 .
[epson2] buf[23] 00 .
[epson2] buf[24] 00 .
[epson2] buf[25] 00 .
[epson2] buf[26] 50 P
[epson2] buf[27] 49 I
[epson2] buf[28] 44 D
[epson2] buf[29] 20
[epson2] buf[30] 30 0
[epson2] buf[31] 38 8
[epson2] buf[32] 35 5
[epson2] buf[33] 31 1
[epson2] buf[34] 20
[epson2] buf[35] 20
[epson2] buf[36] 20
[epson2] buf[37] 20
[epson2] buf[38] 20
[epson2] buf[39] 20
[epson2] buf[40] 20
[epson2] buf[41] 20
[epson2] main = 00, ADF = 00, TPU = 00, main 2 = c0
[epson2] sane_epson2_get_devices - results:
[epson2]  0 (3): PID 0851
scanimage: sane_start: Invalid argument
[epson2] sane_epson2_exit
[epson2] free_devices