I am having the exact same issue with a wireless installed brother MFC-L2740DW on Ubuntu 16.04.3. Installed the repository as suggested here. Now libsane version is 1.0.27+git20180122-xenial0 - but the problem unfortunately remains.
on starting XSANE: "failed to open device brother4:net1;dev0 invalid argument" scanimage -L device `brother4:net1;dev0' is a Brother MFC-L2740DW MFC-L2740DW scanimage --test scanimage: open of device brother4:net1;dev0 failed: Invalid argument please help ! -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to sane-backends in Ubuntu. https://bugs.launchpad.net/bugs/1512027 Title: open of device pixma:MX7600_... failed: invalid argument Status in sane-backends package in Ubuntu: Confirmed Bug description: Up until recently, I've been able to scan fine with my Canon Pixma MX7600. Then I upgraded to Ubuntu Wily and I've started getting: $ scanimage scanimage: open of device pixma:MX7600_192.168.2.107 failed: Invalid argument The device pings and I can get to its HTTP port. Everything appears OK. If I run strace -f -s 256 -o /tmp/trace.txt scanimage the relevant output appears to be: socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 204 connect(204, {sa_family=AF_INET, sin_port=htons(8612), sin_addr=inet_addr("192.168.2.107")}, 16) = 0 sendto(204, "BJNP\2\1\0\0\0\0\0\0\0\0\0\0", 16, 0, NULL, 0) = 16 select(205, [204], NULL, NULL, {4, 0}) = 1 (in [204], left {3, 998257}) recvfrom(204, "BJNP\202\1\0\0\0\0\0\0\0\0\0\20\0\1\10\0\6\4\0\0\205\316\356\343\300\250\2k", 2048, 0, NULL, N ULL) = 32 close(204) write(2, "scanimage: open of device pixma:MX7600_192.168.2.107 failed: Invalid argument\n", 78) = 78 It appears to me that the scanner is responding but the driver doesn't like the response. I'm running sane 1.0.14-11 and sane-utils 1.0.25+git201505. WORKAROUND: Use the PPA from https://launchpad.net/~rolfbensch/+archive/ubuntu/sane-git To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1512027/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
