Ubuntu 22.04安装Canon MG3650S扫描驱动遇libpango依赖问题求助

问题描述 #

在Ubuntu 22.04系统上安装Canon MG3650S打印/扫描一体机的ScanGear MP驱动时，遇到libpango相关依赖问题。已安装libpango-1.0-0，但驱动配置仍失败，系统提示scangearmp2依赖的libpango1.0-0未安装，且显示“libpango-1.0-0 set to manually installed”。另一台同版本Ubuntu设备无此问题，求可能原因。

操作日志 #

~/Downloads/scangearmp2-3.20-1-deb$ sudo apt-get install libpango-1.0-0
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
libpango-1.0-0 is already the newest version (1.50.6+ds-2).
libpango-1.0-0 set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 150 not upgraded.
~/Downloads/scangearmp2-3.20-1-deb$ sudo ./install.sh 
==================================================

ScanGear MP
Version 3.20
Copyright CANON INC. 2007-2015

==================================================
Command executed = sudo dpkg -iG ./packages/scangearmp2_3.20-1_amd64.deb
Selecting previously unselected package scangearmp2.
(Reading database ... 272630 files and directories currently installed.)
Preparing to unpack .../scangearmp2_3.20-1_amd64.deb ...
Unpacking scangearmp2 (3.20-1) ...
dpkg: dependency problems prevent configuration of scangearmp2:
 scangearmp2 depends on libpango1.0-0 (>= 1.14.0); however:
  Package libpango1.0-0 is not installed.

dpkg: error processing package scangearmp2 (--install):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 scangearmp2
Command executed = sudo dpkg -P scangearmp2
(Reading database ... 272652 files and directories currently installed.)
Removing scangearmp2 (3.20-1) ...
Purging configuration files for scangearmp2 (3.20-1) ...

可能原因及解决方向 #

• 包名关联异常：Ubuntu 22.04中libpango1.0-0是libpango-1.0-0的过渡包/别名，但系统未正确识别该关联。可手动执行sudo apt-get install libpango1.0-0，即使它只是指向已安装的包，也能修复dpkg的依赖检测逻辑。
• dpkg数据库损坏：系统依赖数据库可能存在条目不一致。执行以下命令修复：
  1. sudo apt-get update 更新软件源列表
  2. sudo apt-get -f install 自动修复未解决的依赖问题
  3. 重新运行驱动安装脚本
• 手动安装标记影响依赖链：libpango-1.0-0被设为手动安装，导致其相关依赖组件未被系统正确识别。执行sudo apt-mark auto libpango-1.0-0将其改为自动安装，再尝试安装驱动。
• 驱动版本适配性差：当前使用的ScanGear MP 3.20版本发布时间较早，对Ubuntu 22.04的新库命名规则适配不足。可尝试下载Canon官方适配Ubuntu 22.04的最新驱动，或使用系统自带的SANE扫描驱动替代。

内容的提问来源于stack exchange，提问作者katang