佳能MX870打印机仅在状态LCD上显示“正在处理”
我在11.10中安装了佳能MX870，但自从升级到12.04后，它就不再适用了。 打印机在打印设置中被识别，当我尝试打印测试页时，打印机LCD显示“处理”消息，但随后它消失，没有任何反应。 以下是我的日志（请注意，尽管访问日志显示成功，但打印仍未成功）：
# /var/log/cups/access_log localhost - - [22/May/2012:12:29:35 -0400] "POST /printers/Canon-MX870 HTTP/1.1" 200 412 Print-Job successful-ok –
# /var/log/cups/error_log W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-Gray..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-RGB..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-Canon-MX870' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-Gray..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-RGB..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-Canon-MX870' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-Gray..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-RGB..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-Canon-MX870' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-Gray..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateProfile: org.freedesktop.ColorManager.AlreadyExists:profile id 'Canon-MX870-RGB..' already exists W [22/May/2012:12:25:51 -0400] failed to CreateDevice: org.freedesktop.ColorManager.AlreadyExists:device id 'cups-Canon-MX870' already exists
找到解决方案：我最初使用michael gruz ppa在11.10下运行打印机，但这在12.04不再有效，并且尝试从Ubuntu的打印管理器安装也无法正常工作。
我找到了一个更新为12.04的michael gruz ppa： https ：//code.launchpad.net/~michael-gruz/+archive/canon-trunk/+packages
我首先使用Synaptic Package Manager删除旧驱动程序，然后添加新驱动程序：
sudo add-apt-repository ppa:michael-gruz/canon-trunk sudo apt-get update sudo apt-get install cnijfilter-mx870series
执行此操作后，使用“打印管理器”安装打印机。
它确实有效。 谢谢。 我使用你的方法并按照说明：（/ /tmp/LinuxDrivers/Canon_Printer/cnijfilter-source-3.10/ppd ）
http://ubuntuforums.org/showthread.php?t=1488850
kimiko@kimiko-Lenovo-G770:~$ uname -a Linux kimiko-Lenovo-G770 3.2.0-24-generic #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux