不能右键启动？

查看/var/log/cups/error.log里出错信息。

sudo cat /var/log/cups/error_log

不行，这个截图就是右键点了启动之后的，启动不了

求指导No valid Listen or Port lines were found in the configuration file.

remove后重装，或者直接reinstall

有关联服务没有启动？

你是说重装cups服务吗，怎么重装，不太会，麻烦详细说一下，感谢

sudo apt purge cups

sudo apt install cups

我也没有操作过，有风险。再问一下大佬。

查看一下cups配置文件：

$ cat /etc/cups/cupsd.conf

`Configuration file for the CUPS scheduler. See "man cupsd.conf" for a
complete description of this file.
Log general information in error_log - change "warn" to "debug"
for troubleshooting...

LogLevel warn
PageLogFormat
Deactivate CUPS' internal logrotating, as we provide a better one, especially
LogLevel debug2 gets usable now

MaxLogSize 0
Only listen for connections from the local machine.

Listen localhost:631
Listen /run/cups/cups.sock`

按照你说的查看cups配置文件里面显示PreserveJobHistory No