所以我在新机器上运行 ubuntu 14.04 i386。我以前可以使用的旧打印机/扫描仪现在无法完全工作。打印机工作正常。
扫描仪不工作。即使查阅了网上的许多文档和问答后，问题仍然是它已连接并且驱动程序已安装：
dpkg -l | grep Brother output：
ii brother-udev-rule-type1 1.0.0-1 all Brother udev rule type 1
ii brscan-skey 0.2.4-1 i386 Brother Linux scanner S-KEY tool
ii brscan4 0.4.2-4 i386 Brother Scanner Driver
ii cupswrappermfc7360n 2.0.4-2 i386 Brother MFC7360N CUPS wrapper driver
ii mfc7360nlpr 2.1.0-1 i386 Brother MFC-7360N LPR driver
ii printer-driver-ptouch 1.3-8 amd64 printer driver Brother P-touch label printers
lsusb 输出：
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 046d:c31c Logitech, Inc. Keyboard K120 for Business
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 04f9:0270 Brother Industries, Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 0461:4d20 Primax Electronics, Ltd HP Optical Mouse
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub