I have a USB-connected brother printer/scanner MFC-7420, hooked up to a desktop running xubuntu 18.04.1 The printer works but the scanner does not. I have tried pretty much every heck posted here and elsewhere but to no avail. Here's what I have done and the error messages I got. Heads up: I wonder what's the significance on the discrepency in (3) below?
----------------- 0) To install the drivers I following the instruction (+FAQ) on https://support.brother.com/g/b/downloa ... all&os=128 including brother-udev-rule-type1-1.0.2-0.all.deb. The printer works, but not the scanner. ----------------- 1) Xsane says Failed to open device `brother2:bus2;dev5' Invalid argument. (sudo xsane gives the same error message). When I fire up simple-scan (sudo or otherwise) it says Ready to Scan Brother MFC-7420 but when I click "scan" I got "Unable to connect to scanner". ----------------- 2) scanimage -L device `brother2:bus2;dev5' is a Brother MFC-7420 USB scanner scanimage --test scanimage: open of device brother2:bus2;dev5 failed: Invalid argument ----------------- 3) lsusb Bus 001 Device 002: ID 04f9:0180 Brother Industries, Ltd MFC-7420 [ Question: How come it says 001:002 when xsane complains about 002:005 ?!! ] ls -l /dev/bus/usb/001/002 crw-rw-r--+ 1 root lp 189, 1 Jan 17 15:36 /dev/bus/usb/001/002 ls -l /dev/bus/usb/001 total 0 crw-rw-r-- 1 root root 189, 0 Jan 17 15:27 001 crw-rw-r--+ 1 root lp 189, 1 Jan 17 15:36 002 crw-rw-r-- 1 root root 189, 2 Jan 17 15:27 003 crw-rw-r-- 1 root root 189, 3 Jan 17 15:27 004 crw-rw-r-- 1 root root 189, 4 Jan 17 15:27 005 crw-rw-r-- 1 root root 189, 5 Jan 17 15:27 006 [Question: According to https://cromwell-intl.com/open-source/x ... ument.html the command above should have listed "scanner" but as you can see it's not there] ------------------- 4) I have copied files from lib64 to lib, such as sudo ln -sf /usr/lib64/libbrscandec*.so* /usr/lib Reboot but to no avail. ------------------- 5) I added myself to the scanner group: sudo usermod -a -G scanner (me) Reboot but to no avail. I also tried more /etc/group | grep -n scanner and here's the output: 59:scanner:x:120:saned,(me) -------------------------------- 6) I edited /lib/udev/rules.d/60-libsane1.rules following the heck in (#12 of) https://easylinuxtipsproject.blogspot.c ... nters.html Reboot but to no avail. -------------------------------- 7) There is no "brother.conf" in /etc/sane.d -------------------------------- 8) I used synaptic to delete all "brother" related files, reinstall the drivers in (step 0) above, reboot but to no avail. -------------------------------- 9) I added the following two lines at the end of /lib/udev/rules.d/40-libsane.rules (Before the line "# The following rule will disable ...") # Brother scanners ATTRS{idVendor}=="04f9", ENV{libsane_matched}="yes" Reboot but to no avail. -------------------------------- I'm at a lost on what to do. The scanner (again, it's USB-based, not wireless) worked until window, but I no longer have access to the window machine and I really need the scanner for work. Your help and advice is most welcome. THANKS! -- 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/1728012 Title: Many 3rd party scanner drivers are broken by a sane change Status in sane-backends package in Ubuntu: Confirmed Bug description: Many scanners can no more be used since sane has changed something: The 3rd-party plug-in the vendor provides as .deb package will still install. But the scanner is no more recognized. Scanners that are affected are(besides others): - Epson Perfection V10 - Epson Perfection V1000 - Epson WorkForce GT-1500 - Brother MFC-8510DN - Epson Perfection V33 It is to note that the probability that the scanner manufacturers fix things others broke is below 100%. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: libsane1 1.0.27-1~experimental2ubuntu2 Uname: Linux 4.14.0-041400rc5-lowlatency x86_64 ApportVersion: 2.20.7-0ubuntu3.1 Architecture: amd64 Date: Fri Oct 27 12:35:52 2017 EcryptfsInUse: Yes SourcePackage: sane-backends UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1728012/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
