simplescan core dumps no Ubuntu 16.04 ao iniciar a digitalização do Brother MFC L2750DW USB

Question

O aplicativo fecha (core dumps) quando o scanner começa a digitalizar depois que eu clico no botão de digitalização. Brother MFC L2750DW conectado via USB, simplescan é a versão mais recente.     simples-scan já é a versão mais recente (3.20.0-0ubuntu1).

dmesg log:

[  534.647562] usb 1-1: USB disconnect, device number 2
[  534.647720] usblp0: removed
[  544.048024] usb 1-1: new high-speed USB device number 3 using ehci-pci
[  544.180971] usb 1-1: New USB device found, idVendor=04f9, idProduct=043a
[  544.180975] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  544.180979] usb 1-1: Product: MFC-L2750DW series
[  544.180982] usb 1-1: Manufacturer: Brother
[  544.180984] usb 1-1: SerialNumber: E78115L7N286679
[  544.183377] usblp 1-1:1.0: usblp0: USB Bidirectional printer dev 3 if 0 alt 0 proto 2 vid 0x04F9 pid 0x043A
[  588.518742] usb 1-1: usbfs: interface 0 claimed by usblp while 'scan-thread' sets config #1
[  588.518772] usb 1-1: usbfs: process 4387 (scan-thread) did not claim interface 1 before use
[  589.757458] usb 1-1: usbfs: interface 0 claimed by usblp while 'scan-thread' sets config #1
[  589.757477] usb 1-1: usbfs: process 4387 (scan-thread) did not claim interface 1 before use
[  669.868311] usb 1-1: usbfs: interface 0 claimed by usblp while 'scan-thread' sets config #1
[  669.868342] usb 1-1: usbfs: process 5213 (scan-thread) did not claim interface 1 before use
[  671.105444] usb 1-1: usbfs: interface 0 claimed by usblp while 'scan-thread' sets config #1
[  671.105465] usb 1-1: usbfs: process 5213 (scan-thread) did not claim interface 1 before use
[  675.906193] scan-thread[5213]: segfault at 3ec ip 00007f12109cb26f sp 00007f1212547870 error 4 in libsane-brother4.so.1.0.7[7f12109b6000+25000]

De simplescan - log de depuração:

[+6.95s] DEBUG: scanner.vala:546: sane_control_option (4, SANE_ACTION_SET_VALUE, "FlatBed") -> (SANE_STATUS_GOOD, "FlatBed")
[+6.95s] DEBUG: scanner.vala:546: sane_control_option (2, SANE_ACTION_SET_VALUE, "24bit Color") -> (SANE_STATUS_GOOD, "24bit Color")
[+6.95s] DEBUG: scanner.vala:462: sane_control_option (3, SANE_ACTION_SET_VALUE, 300) -> (SANE_STATUS_GOOD, 300)
[+6.95s] DEBUG: scanner.vala:502: sane_control_option (10, SANE_ACTION_SET_VALUE, 210.000000) -> (SANE_STATUS_GOOD, 209.980774)
[+6.95s] DEBUG: scanner.vala:502: sane_control_option (11, SANE_ACTION_SET_VALUE, 297.000000) -> (SANE_STATUS_GOOD, 296.972809)
[+11.18s] DEBUG: scanner.vala:1213: sane_start (page=0, pass=0) -> SANE_STATUS_GOOD
[+11.18s] DEBUG: scanner.vala:1230: sane_get_parameters () -> SANE_STATUS_GOOD
[+11.18s] DEBUG: scanner.vala:1242: Parameters: format=SANE_FRAME_RGB last_frame=SANE_TRUE bytes_per_line=7392 pixels_per_line=2464 lines=3437 depth=8
[+11.18s] DEBUG: simple-scan.vala:348: Page is 2464 pixels wide, 3437 pixels high, 8 bits per pixel
[+11.21s] DEBUG: simple-scan.vala:282: Getting color profile for device brother4:bus8;dev1
[+11.21s] DEBUG: simple-scan.vala:302: Unable to find colord device brother4:bus8;dev1: property match 'Serial'='sane:brother4:bus8;dev1' does not exist
[+11.31s] DEBUG: ui.vala:2124: Saving state to /home/alexey/.cache/simple-scan/state

    

Answer 1

desta página de índice do Suporte para Linux da Brother link

pode-se acessar a página de perguntas frequentes para scanners link

3 coisas para verificar:

1) link verifique se o libusb-0.1-4 está instalado .. mesmo se estiver em rede! Instale com sudo apt install libusb-0.1-4

2) link Copie os arquivos especificados em / usr / lib64 / para / usr / lib /. Dica: o seu dispositivo é brscan4

então

sudo sudo cp /usr/lib64/sane/libsane-brother4.so.1.0.7 /usr/lib/sane

sudo cp /usr/lib64/sane/libsane-brother4.so /usr/lib/sane

sudo cp /usr/lib64/sane/libsane-brother4.so.1 /usr/lib/sane

3) se conectado a USB; precisa da regra do udev

se estiver em rede, verifique tudo aqui link

....... sim, tudo poderia ser muito mais simples ..